Category Archives: Tributary

2.7.2. Arlington River

2.7.2.1.  About the Arlington River

Figure 2.31 The Arlington River Tributary (WBID 2265A) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.31 The Arlington River Tributary (WBID 2265A) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
  • East of downtown Jacksonville
  • Primary Land Use: Residential
    • Current TMDL reports:
      Nutrients
  • 2022 Verified Impairment for Iron
  • WBID Area: 1.6 sq. mi.
  • Beneficial Use: Class III M
    (Recreational – Marine)

2.7.2.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Arlington River WBID 2265A (DEP 2023b) shown above. No water quality data for the selected parameters discussed below for the Arlington River were available in WIN for 2020.  The filtered dataset reflects water column concentrations and was used to generate Table 2.7.

2.7.2.3. Discussion

Water quality data for the Arlington River are presented in Table 2.7. Average phosphorus levels were historically higher than the recently updated WQC (DEP 2015c; DEP 2016d; DEP 2016i) and the tributary was listed as impaired for nutrients. Elevated levels of phosphorus may be a result of effluent from the Monterey WWTF that is discharged into the river, fertilizer runoff from the surrounding residential area, or other unidentified sources. The Arlington River was delisted (removed) from the Verified List for nutrient impairment as a result of a finalized TMDL report for nutrients in 2009 (Magley 2009c).  However, the Arlington River remains impaired for nutrients until there is sufficient data to demonstrate the waterbody is meeting the applicable water quality criterion. Total phosphorus concentrations in recent years have been lower than the WQC used here of 0.12 mg/L. (Phosphorus in the Arlington River is regulated by the Nutrients TMDL, not the WQC presented here.)

The Arlington River was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue; however, this has been delisted (DEP 2016f) as it has been addressed by the statewide mercury TMDL (DEP 2013c). The Arlington River is no longer listed as impaired for chlorophyll-a as that is being addressed by the Nutrients TMDL, which calls for a 30% reduction in TN compared to historical levels (DEP 2016f). However, chlorophyll-a continues to remain high, with average concentrations double the WQC in 2021-2022. The Arlington River is impaired for iron, based on the number of exceedances for the sample size; DEP cannot rule out the possibility of anthropogenic sources. In 2022, the average iron level was near the WQC, with one of five samples exceeding it.

Historical water quality data for the Arlington River are available in previous versions of the River Report.

Table 2.7 Water quality data for Arlington River.

Water QualityAverage and Number of Samples º
ParameterCriteria (SW)202020212022
Dissolved Oxygen (mg/L)≥4.0Not Available 6.40
(0 of 7 samples)
7.05 ± 0.47
(0 of 5 samples)
Total Nitrogen (mg/L)<1.54Not Available 0.81
(0 of 2 samples)
0.81 ± 0.08
(0 of 5 samples)
Total Phosphorus (mg/L)<0.12Not Available 0.10
(1 of 7 samples)
0.08±0.002
(0 of 5 samples)
Chlorophyll-a (µg/L)<5.4Not Available 10.51
(5 of 7 samples)
12.28 ± 4.32
(4 of 5 samples)
Arsenic (µg/L)≤50Not Available Not Available 1.85 ± 0.18
(0 of 5 samples)
Cadmium (µg/L)≤8.8Not Available Not Available 0.03 ± 0.01
(0 of 5 samples)
Copper (µg/L)≤3.7Not Available Not Available 0.98 ± 0.12
(0 of 5 samples)
Iron (µg/L)≤0.3Not Available Not Available 0.23 ± 0.06
(1 of 5 samples)
Lead (µg/L)≤8.5Not Available Not Available 0.68 ± 0.13
(0 of 5 samples)
Nickel (µg/L)≤8.3Not Available Not Available 1.90 ± 0.78
(0 of 5 samples)
Silver (µg/L)≤0.92Not Available Not Available 0.01 ± 0.004
(0 of 5 samples)
Zinc (µg/L)≤86Not Available Not Available 5.50 ± 1.23
(0 of 5 samples)
Fecal Indicator Bacteria (Enterococci) (CFU/100 mL)<130Not Available 500 (3 of 4 samples)36 ± 13
(0 of 3 samples)
Turbidity (NTU)<29Not Available 9.53 (0 of 4 samples)5.74 ± 1.19
(0 of 5 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.3. Big Fishweir Creek

2.7.3.1. About Big Fishweir Creek

Figure 2.32 Big Fishweir Creek (WBID 2280A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.32 Big Fishweir Creek (WBID 2280A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
  • West of Downtown, South of I-10
  • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP, Mercury
    • 2020 Verified Impairment for
      Dissolved Oxygen (2280B) and Nutrients (Chlorophyll-a) (2280B)
  • WBID Area: 3.7 sq. mi.
    • Beneficial Use: Class III F / M
      (2280A Recreational – Freshwater, 2280B Recreational – Marine)

2.7.3.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Big Fishweir Creek WBID 2280, 2280A (freshwater), and 2280B (saltwater/marine) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.8.

2.7.3.3. Discussion

Water quality data for Big Fishweir Creek are shown in Table 2.8. Average total phosphorus concentrations in the freshwater reach (WBID 2280A) have been higher than the WQC for 2020-2022 (not sampled in marine reach WBID 2280B 2020-2022). The marine reach (2280B) was listed as Impaired for Dissolved Oxygen and Nutrients (Chlorophyll-a) in 2020, and excessive nutrient concentrations were identified as the cause for reduced dissolved oxygen levels (DEP 2020a). FDEP has placed a medium priority for the development of a TMDL to address these impairments.  The freshwater segment of Big Fishweir Creek was added to the FDEP study list for dissolved oxygen (DEP 2020f). The freshwater segment is considered impaired for dissolved oxygen based on the number of exceedances for the sample size, but the causative pollutant has not yet been identified. Big Fishweir Creek marine reach (2280B) was listed as Impaired for high levels of iron; FDEP cannot rule out the possibility of anthropogenic sources (DEP 2016h; DEP 2020e).

A TMDL report (Wainwright and Hallas 2009a) was released in 2009 to address Fecal coliform, calling for an 87% reduction of sources, and Big Fishweir Creek is no longer listed as impaired for Fecal coliform as a result (DEP 2016f) (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP to address this issue was legally adopted (DEP 2009b). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.  Fecal indicator bacteria measurements continue to show average bacterial concentrations higher than the WQC.  In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive. Big Fishweir Creek was found to have known sources of untreated human waste present (DEP 2019a).  In 2020, Big Fishweir Creek was added to FDEP’s study list to monitor the response in fecal indicator bacteria levels (specifically, E. coli in the freshwater portions and Enterococcus in the marine portions) to ongoing restoration activities taking place in both the freshwater and marine segments as part of the BMAP (DEP 2020f).

The US Army Corps of Engineers commissioned a study of the sediment and water in Big Fishweir Creek that took place in October 2019 to provide information regarding dredging activities within the creek (USACE 2020a).  This study found that sediments throughout most of Big Fishweir Creek contained heavy metals, and the levels of lead, chlorinated pesticides, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and dioxins were high enough to exceed FDEP’s Sediment Quality Assessment Guidelines (DEP 2021g).

No recent measurements were available in WIN between 2020 and 2022 for the marine reach (WBID 2280B) for the following parameters: Total Nitrogen, Total Phosphorus, Chlorophyll-a, Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc, Turbidity.

Historical water quality data for Big Fishweir Creek are available in previous versions of the River Report.

Table 2.8 Water quality data for Big Fishweir Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW4.22
(7 of 25 samples)
5.63
(3 of 24 samples)
4.36 ± 0.38
(7 of 26 samples)
≥4.0 SW7.22
(0 of 6 samples)
5.63
(3 of 24 samples)
6.60 ± 0.50
(1 of 10 samples)
Total Nitrogen (mg/L)<1.541.18
(0 of 3 samples)
0.79
(0 of 2 samples)
1.19 ± 0.20
(1 of 5 samples)
Total Phosphorus (mg/L)<0.120.16
(2 of 3 samples)
1.15
(2 of 3 samples)
0.17 ± 0.05
(3 of 5 samples)
Chlorophyll-a (µg/L)<20 FW2
(0 of 6 samples)
1.27
(0 of 4 samples)
0.79 ± 0.29
(0 of 4 samples)
Arsenic (mg/L)≤50Not AvailableNot Available1.40
(0 of 1 samples)
Cadmium (µg/L)≤8.8 SWNot AvailableNot Available0.01
(0 of 1 samples)
Copper (µg/L)≤3.7 SWNot AvailableNot Available0.60
(0 of 1 samples)
Iron (mg/L)≤0.3 SWNot AvailableNot Available0.89
(0 of 1 samples)
Lead (µg/L)≤8.5 SWNot AvailableNot Available0.54
(0 of 1 samples)
Nickel (µg/L)≤8.3 SWNot AvailableNot Available1.25
(0 of 1 samples)
Silver (µg/L)≤0.92 SWNot AvailableNot Available0.01
(0 of 1 samples)
Zinc (µg/L)≤86 SWNot AvailableNot Available12.5
(0 of 1 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)E. coli <410 FW1350
(23 of 29 samples)
1840
(20 of 28 samples)
1299 ± 350
(14 of 22 samples)
E. coli <410 SW779 ± 44
(4 of 4 samples)
Enterococci <130 SW263 ± 117
(3 of 4 samples)
Turbidity (NTU)<293.87
(0 of 3 samples)
4.95
(0 of 4 samples)
4.14 ± 0.62
(0 of 5 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

 

2.7.4. Black Creek

2.7.4.1. About Black Creek

Figure 2.33 The Black Creek Tributary (WBID 2415A/B/C) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.33 The Black Creek Tributary (WBID 2415A/B/C) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • West of the St Johns River at the Clay/Duval county line
    • Primary Land Use: Forested
    • Current TMDL reports:
      Lead (2415B/C)
    • 2022 Verified Impairment for Dissolved Oxygen (2415A)
    • WBID Area: 15.4 sq. mi.
    • Beneficial Use: Class III F

2.7.4.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Black Creek WBID 2415A/B/C (DEP 2023b) shown above. The aggregate (all three WBIDs combined) filtered dataset reflects water column concentrations and was used to generate Table 2.9.

2.7.4.3. Discussion

Water quality data for Black Creek are shown in Table 2.9. Black Creek was identified as impaired for dissolve oxygen in 2022 (2415A) due to nutrients (DEP 2022). Phosphorus concentrations have been near or at the WQC 2020-2022. Lead has been identified as impaired in Black Creek (2415B/C) and a TMDL report was published in 2009 (Lewis and Mandrup-Poulsen 2009) to address this issue, with a 73% reduction in sources. Other metals, such as copper, nickel, and silver were detected previously at higher concentrations. Water quality data from recent years had suggested that the concentrations of these metals have been reduced and controlled.  Water concentrations of the metals presented in the table below in the water remain lower than their respective WQCs.

SJRWMD is in the design phase of their Black Creek Water Resource Development Project, which is intended to replenish the Upper Floridian aquifer using water from Black Creek during high water periods and flood events (SJRWMD 2022a).  In these cases, water will be pumped toward the Keystone Heights area. Permits were issued for this project in 2022, and construction contracts have been approved by the District Governing Board.

Historical water quality data for Black Creek are available in previous versions of the River Report.

Table 2.9 Water quality data for Black Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≤34% sat. (≤3.0)6.85
(2 of 75 samples)
6.64
(0 of 24 samples)
6.65 ± 0.21
(0 of 36 samples)
Total Nitrogen (mg/L)<1.54Not availableNot available0.75 ± 0.05
(0 of 21 samples)
Total Phosphorus (mg/L)<0.120.1
(8 of 34 samples)
0.09
(5 of 26 samples)
0.12 ± 0.01
(6 of 20 samples)
Chlorophyll-a (µg/L)<202.13
(0 of 34 samples)
3.08
(0 of 16 samples)
4.49 ± 1.67
(2 of 21 samples)
Arsenic (µg/L)≥500.74
(0 of 58 samples)
0.76
(0 of 16 samples)
1.65 ± 0.32
(0 of 15 samples)
Cadmium (µg/L)≥0.30.04
(0 of 58 samples)
0.05
(0 of 16 samples)
0.04 ± 0.02
(0 of 15 samples)
Copper (µg/L)≥9.31.6
(2 of 58 samples)
1.76
(0 of 16 samples)
2.79 ± 0.96
(1 of 15 samples)
Iron (µg/L)≥1Not included in
2021 SORR
Not included in
2022 SORR
0.57 ± 0.06
(2 of 15 samples)
Lead (µg/L)≥3.20.35
(0 of 58 samples)
0.38
(0 of 16 samples)
0.50 ± 0.11
(0 of 15 samples)
Nickel (µg/L)≥521.11
(0 of 58 samples)
0.88
(0 of 16 samples)
0.98 ± 0.29
(0 of 15 samples)
Silver (µg/L)≥0.070.03
(1 of 58 samples)
0.02
(0 of 16 samples)
0.02 ± 0.003
(0 of 15 samples)
Zinc (µg/L)≥1205.52
(0 of 58 samples)
5.63
(0 of 16 samples)
9.17 ± 2.96
(0 of 15 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL) ≥40076
(0 of 8 samples)
48
(0 of 6 samples)
300 ± 112
(2 of 7 samples)
Turbidity (NTU)<292.86
(0 of 32 samples)
3.96
(0 of 16 samples)
5.61 ± 1.27
(0 of 20 samples)
Note Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.5. Broward River

2.7.5.1. About the Broward River

Figure 2.34 The Broward River Tributary (WBID 2191A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.34 The Broward River Tributary (WBID 2191A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b). 
  • Between downtown and Jacksonville International Airport (JIA)
  • Primary Land Use: Residential/Forested
  • Current TMDL reports: None
  • 2022 Verified Impairment for Fecal Coliform (2191B)
  • WBID Area: 14.4 sq. mi.
  • Beneficial Use: Class III F/M (2191A – Recreational Freshwater, 2191B – Recreational Marine)

2.7.5.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Broward River WBID 2191A/B (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.10.

2.7.5.3. Discussion

Water quality data for the Broward River are shown in Table 2.10. Little water quality data is available for the Broward River compared to other tributaries. Historically, average phosphorus levels were higher than the 2010 updated WQC (DEP 2015c; DEP 2016d; DEP 2016i).   Historical maximum fecal coliform level at times exceeded the WQC, and as a result, the marine reach (2191B) was listed as impaired for fecal coliform. FDEP considers the Broward River a low priority for the development of a TMDL to address Fecal Coliform levels (DEP 2016d). Average fecal indicator bacteria levels did not usually exceed the WQC in 2022, although there are few samples to base this assessment on.  The Broward River was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue; however, it was delisted (DEP 2016f) as it has been addressed by the statewide mercury TMDL (DEP 2013c).

The freshwater segment of the Broward River was added to the FDEP study list for dissolved oxygen (DEP 2020f). The freshwater segment is considered impaired for dissolved oxygen based on the number of exceedances for the sample size, but the causative pollutant has not yet been identified.

No recent measurements were available in WIN between 2020 and 2022 for both freshwater and marine reaches (WBID 2191A, 2191B) for the following parameters: Total Nitrogen, Total Phosphorus, Chlorophyll-a, Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc, Turbidity.

Historical water quality data for the Broward River are available in previous versions of the River Report.

Table 2.10 Water quality data for the Broward River.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≤34% sat. (≤3.0) FW6.07
(0 of 3 samples)
6.84
(0 of 4 samples)
6.82 ± 0.50
(0 of 4 samples)
≤4.0 SW7.1
(0 of 3 samples)
7.90
(0 of 4 samples)
7.42 ± 0.79
(0 of 4 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)E. coli <410 FW1060
(3 of 6 samples)
500
(1 of 7 samples)
174 ± 32
(0 of 4 samples)
E. coli <410 SW108
(0 of 1 samples)
Enterococci <130 SW140 ± 32
(2 of 3 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.6. Butcher Pen Creek

2.7.6.1. About Butcher Pen Creek

Figure 2.35 Butcher Pen Creek (WBID 2322) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.35 Butcher Pen Creek (WBID 2322) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • A tributary of the Cedar River
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 1.31 sq. miles

    Beneficial Use: Class III F
    (Recreational – Freshwater)

2.7.6.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Butcher Pen Creek WBID 2322 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.11.

2.7.6.3. Discussion

Water quality data for Butcher Pen Creek are shown in Table 2.11. Historical phosphorus levels were higher than the recently updated WQC (DEP 2015c; DEP 2016d; DEP 2016i), and recent average total phosphorus levels remain at or above the WQC.  Chlorophyll-a levels far exceeded the WQC in 2022. Butcher Pen Creek was previously considered impaired for chlorophyll-a, but it was delisted in 2016 (DEP 2016f).  Butcher Pen Creek is impaired for Dissolved Oxygen based on the number of exceedances and the number of measurements taken, but it was not included on the 2020 or 2022 Verified List of Impaired Waters (DEP 2020e). High nutrient levels were previously identified as the causative pollutant for reduced dissolved oxygen levels, but during the last assessment period, Butcher Pen Creek was not considered impaired for nutrients.  As a result, Butcher Pen Creek was added to the Study List to identify the causative agent. Average dissolved oxygen concentrations have been above the WQC on average from 2020-2022, but more than 10% of samples taken are below the WQC. The average concentration of iron also exceeded the WQC in 2022.

A TMDL report was published in 2005 in response to average fecal coliform levels exceeding the WQC (Wainwright 2005a) to address this issue, with an 83% reduction of current anthropogenic fecal coliform loading. Subsequently, a BMAP to address this issue was legally adopted (DEP 2009b). Fecal coliform levels have remained high, with average fecal indicator bacteria levels more than three times the WQC.  In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive.  Butcher Pen Creek was found to have known sources of untreated human waste present (DEP 2019a). In 2020, Butcher Pen Creek was added to FDEP’s study list to monitor the response in fecal coliform (E. coli) levels to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f).  Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.

Historical water quality data for Butcher Pen Creek are available in previous versions of the River Report.

Table 2.11 Water quality data for Butcher Pen Creek.

 

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)4.28
(9 of 25 samples)
5.81
(4 of 30 samples)
5.73 ± 0.31
(6 of 46 samples)
Total Phosphorus (mg/L)<0.120.16
(2 of 3 samples)
0.14
(6 of 10 samples)
1.19 ± 0.13
(2 of 13 samples)
Total Nitrogen (mg/L)<1.54Not availableNot available0.16 ± 0.01
(10 of 13 samples)
Chlorophyll-a (µg/L)<203.68
(0 of 2 samples)
17.90
(3 of 10 samples)
38.72 ± 8.93
(10 of 13 samples)
Arsenic (µg/L)≤50Not available1.06
(0 of 5 samples)
1.06 ± 0.13
(0 of 11 samples)
Cadmium (µg/L)≤0.3Not available0.01
(0 of 5 samples)
0.01 ± 0.000
(0 of 11 samples)
Copper (µg/L)≤9.3Not available1.22
(0 of 5 samples)
1.01 ± 0.09
(0 of 11 samples)
Iron (µg/L)≤1Not included in
2021 SORR
Not included in
2021 SORR
1.29 ± 0.08
(9 of 11 samples)
Lead (µg/L)≤3.2Not available0.50
(0 of 5 samples)
0.39 ± 0.05
(0 of 11 samples)
Nickel (µg/L)≤52Not available1.25
(0 of 5 samples)
1.16 ± 0.09
(0 of 11 samples)
Silver (µg/L)≤0.07Not available0.01
(0 of 5 samples)
0.00 ± 0.000
(0 of 11 samples)
Zinc (µg/L)≤120Not available12.5
(0 of 5 samples)
11.59 ± 0.91
(0 of 11 samples)
Fecal Indicator Bacteria
(E. Coli) (CFU/100 mL)
<4101520
(18 of 24 samples)
3030
(20 of 21 samples)
1393 ± 240
(16 of 23 samples)
Turbidity (NTU)<2914.23
(0 of 3 samples)
8.29
(0 of 10 samples)
6.02 ± 0.54
(0 of 13 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.7. Cedar River

2.7.7.1. About the Cedar River

Figure 2.36 The Cedar River Tributary (WBID 2262B and 2213P2) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.36 The Cedar River Tributary (WBID 2262B and 2213P2) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • At the I-10/I-295 Interchange
    • Primary Land Use: Residential/Forested
    • Current TMDL reports:
      Fecal Coliform (2262B, 2213P) and DO/Nutrients (2213P)
    • 2022 Verified Impairment for
      Fecal coliform ( coli) (2262B) and Iron (2213P2)
    • WBID Area: 22.8 sq. mi.

    Beneficial Use: Class III F/M
    (2262B Recreational – Freshwater, 2213P2 Recreational – Marine)

2.7.7.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Cedar River WBID 2262B (freshwater) and 2213P2 (marine) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.12.

2.7.7.3. Discussion

Water quality data for the Cedar River are shown in Table 2.12. The Cedar River feeds into the Ortega River and thus is not directly a tributary of the St. Johns River. Even so, the Cedar River is tidal in nature, varying in height by ~1 ft over the course of a day (SJRWMD 2010d). Average total phosphorus levels had been lower than the reference value (DEP 2015c; DEP 2016d; DEP 2016i).  However, the average total phosphorus level 2020-2022 was near the reference value, with approximately half of samples exceeding the WQC, especially in the marine reach (2213P2). Average chlorophyll-a levels in the Cedar River were well above the WQC in the marine reach (2213P2) from 2020 through 2022. The marine reach (WBID 2213P2) had average copper and iron levels 2020-2022 near or exceeding the WQC.  The Cedar River was listed as Impaired for high levels of iron in 2016 and 2022 (DEP 2016h; DEP 2020e; DEP 2022).

In 2004, Cedar River was identified as being impaired for both fecal and total coliform, and as a result, a TMDL report was finalized in 2006 (Magley 2006b), with an 83% reduction of current anthropogenic fecal coliform loading. (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Currently, a Basin Management Action Plan (BMAP) to address this impairment is under development, but the timeframe for its release is currently unknown.  In 2020, Cedar River was verified as Impaired for fecal coliform based on the number of exceedances for the sample size (DEP 2020g).  FDEP confirmed anthropogenic sources for these bacteria using genetic marker analysis and chemical tracer data.  Average E. coli levels exceeded the WQC 2020-2022.

No recent measurements were available in WIN or STORET between 2020 and 2022 for the freshwater reach (WBID 2262B) for the following parameters: Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc.

Historical water quality data for the Cedar River are available in previous versions of the River Report.

Table 2.12 Water quality data for the Cedar River.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW7.12
(0 of 9 samples)
7.50
(0 of 12 samples)
6.61 ± 0.48
(0 of 11 samples)
≥4.0 SW6.38
(2 of 15 samples)
6.20
(1 of 27 samples)
6.64 ± 0.47
(2 of 18 samples)
Total Nitrogen (mg/L)<1.54 FWNot availableNot available1.28 ± 0.10
(0 of 4 samples)
<1.54 SW1.00 ± 0.15
(0 of 3 samples)
Total Phosphorus (mg/L)<0.12 FW0.14
(9 of 14 samples)
0.11
(6 of 16 samples)
0.12 ± 0.01
(1 of 4 samples)
<0.12 SW0.16 ± 0.01
(3 of 3 samples)
Chlorophyll-a (µg/L)<20 FW7.35
(0 of 4 samples)
6.13
(0 of 4 samples)
9.50 ± 4.54
(0 of 3 samples)
<5.4 SW25.05
(9 of 10 samples)
32.72
(9 of 9 samples)
34.22 ± 18.05
(3 of 3 samples)
Arsenic (µg/L)≤503.01
(0 of 10 samples)
2.66
(0 of 8 samples)
1.96 ± 0.24
(0 of 8 samples)
Cadmium (µg/L)≤8.8 SW0.12
(0 of 10 samples)
0.08
(0 of 8 samples)
0.08 ± 0.04
(0 of 8 samples)
Copper (µg/L)≤3.7 SW4.07
(5 of 10 samples)
3.48
(3 of 8 samples)
3.62 ± 1.01
(2 of 8 samples)
Iron (mg/L)≤0.3 SW0.44
(8 of 10 samples)
0.45
(7 of 8 samples)
0.34 ± 0.04
(3 of 8 samples)
Lead (µg/L)≤8.5 SW2.97
(0 of 10 samples)
3.19
(0 of 8 samples)
1.96 ± 0.35
(0 of 8 samples)
Nickel (µg/L)≤8.3 SW1.80
(0 of 10 samples)
1.59
(0 of 8 samples)
1.53 ± 0.28
(0 of 8 samples)
Silver (µg/L)≤0.92 SW0.11
(0 of 10 samples)
0.07
(0 of 8 samples)
0.04 ± 0.03
(0 of 8 samples)
Zinc (µg/L)≤86 SW22.00
(0 of 10 samples)
23.50
(0 of 8 samples)
18.12 ± 2.75
(0 of 8 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)E. coli <410 FW6900
(6 of 16 samples)
1630
(16 of 23 samples)
1848 ± 776
(7 of 12 samples)
E. coli <410 SW641 ± 397
(2 of 4 samples)
Enterococci <130 SW17 ± 12
(0 of 2 samples)
Turbidity (NTU)<29 FW6.58
(0 of 14 samples)
11.60
(0 of 12 samples)
12.43 ± 5.21
(0 of 4 samples)
<29 SW9.20 ± 3.39
(0 of 3 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.8. Deep Creek

2.7.8.1. About Deep Creek

Figure 2.37 The Deep Creek Tributary (WBID 2549 and 2589).
Figure 2.37 The Deep Creek Tributary (WBID 2549 and 2589).
  • East of the St. Johns at Palatka
  • Primary Land Use: Forested, Row Crop Agriculture
  • Current TMDL reports: Dissolved Oxygen (2589)
  • 2022 Verified Impairment for
    Dissolved Oxygen (2549), Biology (2549), Specific Conductance (2549), Nutrients (Total Phosphorus) (2549), and Iron (2589)
  • WBID Area: 60.5 sq. mi.
  • Beneficial Use: Class III F
    (Recreational – Freshwater

2.7.8.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Deep Creek WBIDs 2549 and 2589 (DEP 2023b) shown above.. The filtered dataset reflects water column concentrations and was used to generate Table 2.13.

2.7.8.3. Discussion

Water quality data for Deep Creek are shown in Table 2.13. Deep Creek is a tributary of the LSJR that drains the eastern banks around Hastings and Spuds, and thus receives substantial agricultural inputs, such as nutrients. Deep Creek was listed as Impaired for dissolved oxygen and biology in 2022 based on failing bioassessments of macroinvertebrates, and nutrients were determined to be the cause of these results (DEP 2020g; DEP 2020e; DEP 2022).  Deep Creek was also listed as impaired for total phosphorus levels and specific conductance (DEP 2020g; DEP 2022). Dissolved oxygen concentrations were on average below the WQC in 2022. Historical concentrations of total nitrogen were elevated but not above the recently updated WQC (DEP 2015c; DEP 2016d; DEP 2016i).  Average total phosphorus levels were more than double the WQC from 2020 to 2022. Non-point source rainwater runoff is likely the major cause of the elevated nitrogen/phosphorus concentrations in this area. Chlorophyll-a has been removed from the recently verified impaired list, as the annual geometric mean chlorophyll-a concentrations have not exceeded the WQC (20 μg/L) more than once over the past three years.  Average chlorophyll-a concentrations were lower than the WQC 2020-2022.

Sixteen Mile Creek (2589) was listed as Impaired for high levels of iron in 2022 (DEP 2016d; DEP 2020e; DEP 2022).  Average iron concentrations were lower than the WQC 2020-2022. In addition to nutrients, organic matter, temperature, and community structure (i.e., number and types of plantsand animal species), among other biotic factors, may contribute to the lower dissolved oxygen concentrations in these tributaries. As a consequence of the above factors/conditions, a TMDL report for dissolved oxygen was published in 2009 (Magley 2009d) for Sixteen Mile Creek (2589). Elevated concentrations of cadmium, copper, nickel, and silver were measured previously in Deep Creek, as compared to the Class III WQC for metals. Recent data indicate that these concentrations have remained below the WQC. Historical water quality data for Deep Creek are available in previous versions of the River Report.

Table 2.13 Water quality data for Deep Creek.

 

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)3.74
(11 of 30 samples)
4.64
(6 of 19 samples
2.77 ± 0.50
(13 of 20 samples)
Total Nitrogen (mg/L)<1.541.64
(2 of 9 samples)
0.74
(0 of 2 samples)
1.05 ± 0.09
(1 of 11 samples)
Total Phosphorus (mg/L)<0.120.37
(15 of 18 samples)
0.28
(16 of 22 samples)
0.32 ± 0.06
(8 of 11 samples)
Chlorophyll-a (µg/L)<209.35
(1 of1 8 samples)
4.08
(0 of 11 samples)
4.06 ± 1.29
(0 of 11 samples)
Arsenic (µg/L)≤501.78
(0 of 18 samples)
2.07
(0 of 11 samples)
2.57 ± 0.18
(0 of 11 samples)
Cadmium (µg/L)≤0.30.03
(0 of 18 samples)
0.05
(0 of 11 samples)
0.02 ± 0.001
(0 of 11 samples)
Copper (µg/L)≤9.32.66
(0 of 18 samples)
2.75
(0 of 11 samples)
3.52 ± 0.72
(0 of 11 samples)
Iron (mg/L)≤1.00.48
(2 of 18 samples)
0.52
(2 of 11 samples)
0.56 ± 0.20
(1 of 11 samples)
Lead (µg/L)≤3.20.28
(0 of 18 samples)
0.30
(0 of 11 samples)
0.29 ± 0.01
(0 of 11 samples)
Nickel (µg/L)≤520.94
(0 of 18 samples)
1.39
(0 of 11 samples)
1.02 ± 0.35
(0 of 11 samples)
Silver (µg/L)≤0.070.03
(0 of 18 samples)
0.05
(1 of 11 samples)
0.02 ± 0.002
(0 of 11 samples)
Zinc (µg/L)≤12015
(0 of 18 samples)
11.59
(0 of 11 samples)
13.86 ± 3.94
(0 of 11 samples)
Fecal Indicator Bacteria (CFU/100 mL)E. coli <410Not availableNot available135
(0 of 1 samples)
Turbidity (NTU)<295.69
(0 of 18 samples)
4.94
(0 of 11 samples)
3.98 ± 0.80
(0 of 11 samples)

2.7.9. Doctors Lake

2.7.9.1. About Doctors Lake

Figure 2.38 The Doctors Lake Tributary (WBID 2389 and 2410).
Figure 2.38 The Doctors Lake Tributary (WBID 2389 and 2410).
    • West of the St. Johns River
      in Clay County
    • Primary Land Use: Forested
    • Current TMDL reports:
      Nutrient (2389), DO/Nutrient (2410)
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 8.4 sq. mi.

    Beneficial Use: Class III F
    (Recreational – Freshwater)

2.7.9.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Doctors Lake WBIDs 2389 and 2410 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.14, with freshwater stream WQCs generally reported; the listed WQC for total phosphorus is the site-specific alternative criterion for average total phosphorus levels in colored lakes. These should be regarded as guidelines only because Swimming Pen creek (2410) is accessed as a stream, Doctors Lake (2389) is accessed as a lake and has different WQC’s.

2.7.9.3. Discussion

Water quality data for Doctors Lake are shown in Table 2.14. A final TMDL report to address nutrients and dissolved oxygen within this tributary has been published (Magley 2009e), with a 50% reduction in total nitrogen load. The average total phosphorus concentration has exceeded the WQC for colored lakes (0.05 mg/L) 2020-2022. Average dissolved oxygen levels are well above the SSAC. Doctors Lake was identified as being impaired for nutrients (chlorophyll-a and total phosphorus), but it was delisted by FDEP in 2020 because of the existing Nutrient TMDL (DEP 2016h; DEP 2020e). However, Doctors Lake remains impaired for nutrients until there is sufficient data to demonstrate the waterbody is meeting the applicable water quality criterion. Recent water samples continue to show elevated total phosphorus concentrations.  Average chlorophyll-a levels were higher than the WQC in 2020 through 2022, with exceptionally high levels in 2022.

SJRWMD completed a demonstration project to remove TP from treated wastewater effluent entering Doctors Lake, and the project began operation in June 2020. At full scale, SJRWMD reports that this additional treatment will remove approximately 6,500 pounds of phosphorus annually (SJRWMD 2020d). SJRWMD approved funding to switch 79 residences in Clay County from residential septic systems to the central sewer system, resulting in an estimated decrease in TN loading of 1,486 pounds annually (SJRWMD 2020d; Patterson 2020b).

Elevated maximum arsenic, cadmium, copper, nickel, silver, and zinc concentrations were previously measured in Doctors Lake, and as a result, EPA has published a Silver TMDL (EPA 2010a). Doctors Lake is largely used for recreational activities such as boating, fishing, and waterskiing. These activities could account for some of the copper, nickel, and zinc contamination; however, the source of the other contamination is not clear. Recent data show that concentrations of these contaminants were on average below the WQC 2020-2022, except silver in 2020.

Historical water quality data for Doctors Lake are available in previous versions of the River Report.

Table 2.14 Water quality data for Doctors Lake.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)7.87
(1 of 51 samples)
7.74
(1 of 44 samples)
7.55 ± 0.21
(2 of 90 samples)
Total Nitrogen (mg/L)<1.54Not availableNot available1.37 ± 0.08
(8 of 49 samples)
Total Phosphorus (mg/L)<0.050.1
(20 of 20 samples)
0.07
(21 of 26 samples)
0.08 ± 0.004
(47 of 49 samples)
Chlorophyll-a (µg/L)<2027.16
(14 of 20 samples)
23.33
(11 of 20 samples)
47.63 ± 5.11
(40 of 48 samples)
Arsenic (µg/L)≤503.57
(0 of 11 samples)
1.81
(0 of 15 samples)
1.40 ± 0.35
(0 of 7 samples)
Cadmium (µg/L)≤0.30.2
(4 of 11 samples)
0.01
(0 of 15 samples)
0.05 ± 0.04
(0 of 7 samples)
Copper (µg/L)≤9.33.07
(0 of 11 samples)
2.27
(0 of 15 samples)
2.25 ± 0.17
(0 of 7 samples)
Iron (mg/L)≤1Not included in 2021 SORRNot included in
2022 SORR
0.49 ± 0.07
(0 of 7 samples)
Lead (µg/L)≤3.21.03
(1 of 11 samples)
0.42
(0 of 15 samples)
0.32 ± 0.13
(0 of 7 samples)
Nickel (µg/L)≤520.98
(0 of 11 samples)
0.58
(0 of 15 samples)
1.18 ± 0.32
(0 of 7 samples)
Silver (µg/L)≤0.070.2
(4 of 11 samples)
0.01
(0 of 15 samples)
0.01 ± 0.004
(0 of 7 samples)
Zinc (µg/L)≤1203.41
(0 of 11 samples)
4.53
(0 of 15 samples)
2.50 ± 0.000
(0 of 7 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)<41018
(0 of 4 samples)
120
(1 of 9 samples)
274 ± 147
(1 of 5 samples)
Turbidity (NTU)<297.45(0 of 20 samples)6.23
(0 of 13 samples)
8.33 ± 1.76
(0 of 7 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.10. Dunns Creek/Crescent Lake

2.7.10.1. About Dunns Creek/Crescent Lake

Figure 2.39 The Dunns Creek/Crescent Lake Tributary (WBID 2606A/B).
Figure 2.39 The Dunns Creek/Crescent Lake Tributary (WBID 2606A/B).
    • East of the St. Johns River in Flagler County
    • Primary Land Use: Forested/Wetlands
    • Current TMDL reports:
      Nutrient (2606B)
    • 2022 Verified Impairment for Nutrients (Chlorophyll-a) (2606A) and Fecal coliform (2606A)
    • WBID Area: 585 sq. mi.
    • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.10.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Dunns Creek/Crescent Lake WBIDs 2606A/B (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.15, with freshwater stream WQC’s generally reported; the listed WQC for total phosphorus is the site-specific alternative criterion for average total phosphorus levels in colored lakes.  These should be regarded as guidelines only because Dunns Creek (2606A) is accessed as a stream, Crescent Lake (2606B) is accessed as a lake and has different WQC’s.

2.7.10.3. Discussion

Water quality data for Dunns Creek/Crescent Lake are shown in Table 2.15. Dunns Creek (WBID 2606A) was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue, however this was delisted (DEP 2016f) as it has been addressed by the statewide mercury TMDL (DEP 2013c). This tributary is a significant non-point-source contributor to nutrient levels in the St. Johns River (Magley and Joyner 2008), and a TMDL for Nutrients was adopted (DEP 2021c) for Crescent Lake (2606B) based on its Trophic State Index (TSI), calculated from the total nitrogen (TN), total phosphorus (TP), and chlorophyll-a levels, with a 34% reduction in total nitrogen and 58% reduction in total phosphorus.

Dunn’s Creek (2606A) was listed as Impaired for nutrients (chlorophyll-a) and fecal coliform in 2022 (DEP 2016h; DEP 2020e; DEP 2022). The average total phosphorus concentrations remained above the site-specific criterion value (0.05 mg/L) from 2020-2022.  Mean chlorophyll-a levels exceeded the WQC in 2020 and 2022 and were near the WQC in 2021. Fecal coliform data were not available for 2021-2022.

Historical water quality data for Dunns Creek/Crescent Lake are available in previous versions of the River Report.

Table 2.15 Water quality data for Dunns Creek/Crescent Lake.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)7.5
(0 of 71 samples)
7.41
(1 of 31 samples)
6.70 ± 0.19
(0 of 36 samples)
Total Nitrogen (mg/L)<1.54Not availableNot available1.32 ± 0.10
(3 of 10 samples)
Total Phosphorus (mg/L)<0.050.11
(19 of 22 samples)
0.07
(14 of 23 samples)
0.09 ± 0.01
(9 of 10 samples)
Chlorophyll-a (µg/L)<2031.15
(13 of 22 samples)
15.08
(3 of 11 samples)
38.29 ± 5.38
(9 of 10 samples)
Arsenic (µg/L)≤502.75
(0 of 11 samples)
2.33
(0 of 6 samples)
2.25 ± 0.50
(0 of 5 samples)
Cadmium (µg/L)≤0.30.05
(0 of 11 samples)
0.03
(0 of 6 samples)
0.03 ± 0.000
(0 of 5 samples)
Copper (µg/L)≤9.31.84
(0 of 11 samples)
2.33
(0 of 6 samples)
0.75 ± 0.50
(0 of 5 samples)
Iron (mg/L)≤1Not included in 2021 SORRNot included in 2022 SORR0.20 ± 0.05
(0 of 5 samples)
Lead (µg/L)≤3.20.3
(0 of 11 samples)
0.32
(0 of 6 samples)
0.28 ± 0.000
(0 of 5 samples)
Nickel (µg/L)≤520.48
(0 of 11 samples)
0.25
(0 of 6 samples)
0.25 ± 0.000
(0 of 5 samples)
Silver (µg/L)≤0.070.05
( 1 of 11 samples)
0.03
(0 of 6 samples)
0.03 ± 0.000
(0 of 5 samples)
Zinc (µg/L)≤1202.5
( 0 of 11 samples)
2.50
(0 of 6 samples)
2.50 ± 0.000
(0 of 5 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)E. coli <41011
( 0 of 10 samples)
Not availableNot available
Turbidity (NTU)<297.73
(0 of 18 samples)
2.86
(0 of 10 samples)
6.12 ± 0.42
(0 of 9 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.11. Durbin Creek

2.7.11.1. About Durbin Creek

Figure 2.40 The Durbin Creek Tributary (WBID 2365) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.40 The Durbin Creek Tributary (WBID 2365) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
  • East of the St. Johns River
  • South of I-295
  • Primary Land Use: Forested
  • Current TMDL reports:
    Fecal Coliform
  • Not included in 2022 Verified List of Impaired Waters
  • WBID Area: 26.2 sq. mi.

2.7.11.2. Data sources

Result were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Durbin Creek WBID 2365 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.16.

2.7.11.3. Discussion

Water quality data for Durbin Creek are shown in Table 2.16. Historically, average dissolved oxygen levels in Durbin Creek were relatively low when compared to other tributaries of the LSJRB. However, no causative pollutant (specific environmental condition) has been identified, and thus no TMDL report is required as it is the “natural condition” of the water body (DEP 2009c). Average dissolved oxygen concentrations were above the WQC from 2020 to 2022, with a few individual samples below the WQC. A TMDL report is available for fecal coliform in Durbin Creek (Magley 2006a), with a 63% reduction of anthropogenic fecal coliform loading. Average fecal indicator bacteria levels in Durbin Creek were lower than the WQC in 2020-2022. (Note: the data analyses in the TMDL are based on different criteria than those used in this report).

Historical water quality data for Durbin Creek are available in previous versions of the River Report.

Table 2.16 Water quality data for Durbin Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)5.81
(2 of 10 samples)
6.15
(0 of 11 samples)
4.55 ± 0.54
(2 of 13 samples)
Total Nitrogen (mg/L)<1.54Not availableNot available0.91 ± 0.11
(0 of 3 samples)
Total Phosphorus (mg/L)<0.120.08
(1 of 5 samples)
0.08
(1 of 6 samples)
0.10 ± 0.02
(1 of 3 samples)
Chlorophyll-a (µg/L)<200.08
(0 of 5 samples)
1.00
(0 of 3 samples)
1.50 ± 0.50
(0 of 3 samples)
Arsenic (µg/L)≤500.75
(0 of 5 samples)
0.25
(0 of 3 samples)
2.75 ± 0.000
(0 of 3 samples)
Cadmium (µg/L)≤0.30.08
(0 of 5 samples)
0.03
(0 of 3 samples)
0.03 ± 0.000
(0 of 3 samples)
Copper (µg/L)≤9.37.25
(1 of 5 samples)
5.52
(1 of 3 samples)
6.64 ± 3.89
(1 of 3 samples)
Iron (mg/L)≤1Not included in
2021 SORR
Not included in
2022 SORR
0.39 ± 0.13
(0 of 3 samples)
Lead (µg/L)≤3.20.28
(0 of 5 samples)
0.49
(0 of 3 samples)
0.36 ± 0.09
(0 of 3 samples)
Nickel (µg/L)≤522.25
(0 of 5 samples)
1.08
(0 of 3 samples)
2.75 ± 0.000
(0 of 3 samples)
Silver (µg/L)≤0.070.03
(0 of 5 samples)
0.03
(0 of 3 samples)
0.03 ± 0.000
(0 of 3 samples)
Zinc (µg/L)≤12017.5
(0 of 5 samples)
19.17
(0 of 3 samples)
27.50 ± 0.000
(0 of 3 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)<410120
(0 of 6 samples)
120
(0 of 8 samples)
134 ± 39
(0 of 8 samples)
Turbidity (NTU)<295.73
(0 of 5 samples)
12.49
(0 of 3 samples)
6.54 ± 2.71
(0 of 3 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.12. Ginhouse Creek

2.7.12.1. About Ginhouse Creek

Figure 2.41 The Ginhouse Creek Tributary (WBID 2248) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.41 The Ginhouse Creek Tributary (WBID 2248) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • South of the St. Johns River just west of Craig Airfield
    • Primary Land Use: Residential
    • Current TMDL reports: None
    • 2022 Verified Impairment for Fecal coliform
    • WBID Area: 2.0 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater

2.7.12.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Ginhouse Creek WBID 2248 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.17.

2.7.12.3. Discussion

The number of reported water quality measurements in the Ginhouse Creek tributary is quite limited compared to other tributaries.  Prior to the one reported measurement for arsenic, cadmium, copper, lead, nickel, silver, and zinc in 2021, no other data for these metals were available in WIN or STORET going back to 2005. Ginhouse Creek is currently identified as impaired for fecal coliform 2022 (DEP 2022), and average fecal indicator bacteria concentrations were higher or near the WQC in 2020-2022, despite limited sampling.

No recent measurements were available in WIN between 2020 and 2022 for the following parameters: Total Nitrogen.

Historical water quality data for these parameters in Ginhouse Creek are available in previous versions of the River Report.

Table 2.17 Water quality data for Ginhouse Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)6.54
(0 of 3 samples)
7.34
(0 of 5 samples)
6.42 ± 0.43
(0 of 4 samples)
Total Phosphorus (mg/L)<0.12Not available0.09
(0 of 1 sample)
Not available
Chlorophyll-a (µg/L)<20Not available60.00
(1 of 1 sample)
Not available
Arsenic (µg/L)≤50Not available1.41
(0 of 1 sample)
Not available
Cadmium (µg/L)≤0.3Not available0.01
(0 of 1 sample)
Not available
Copper (µg/L)≤9.3Not available1.17
(0 of 1 sample)
Not available
Iron (mg/L)≤1.0Not availableNot included in
2022 SORR
Not available
Lead (µg/L)≤3.2Not available0.30
(0 of 1 sample)
Not available
Nickel (µg/L)≤52Not available0.25
(0 of 1 sample)
Not available
Silver (µg/L)≤0.07Not available0.01
(0 of 1 sample)
Not available
Zinc (µg/L)≤120Not available2.50
(0 of 1 sample)
Not available
Fecal Indicator Bacteria (CFU/100 mL)E. coli <41053
(2 of 3 samples)
8510
(3 of 3 samples)
385 ± 122
(1 of 4 samples)
Turbidity (NTU)<29Not available6.80
(0 of 1 sample)
Not available
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.13. Goodbys Creek

2.7.13.1. About Goodbys Creek

Figure 2.42 The Goodbys Creek Tributary (WBID 2326A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.42 The Goodbys Creek Tributary (WBID 2326A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • East of the St. Johns River opposite NAS Jacksonville
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP
    • 2022 Verified Impairment for Iron (2326A/2326B)
    • WBID Area: 5.1 sq. mi.

    Beneficial Use: Class III F/M
    (2326A Recreational – Freshwater, 2326B Recreational – Marine)

2.7.13.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Goodbys Creek WBID 2326, 2326A (freshwater), and 2326B (marine) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.18.

2.7.13.3. Discussion

Water quality data for Goodbys Creek are shown in Table 2.18. Previous average phosphorus levels in Goodbys Creek exceeded the updated WQC (EPA 2010b), but the average phosphorus levels between 2020 and 2021 were lower than the WQC (no nutrient data were available in 2022).  FDEP added the marine portion of Goodbys Creek (2326B) to its study list for dissolved oxygen in 2020 (DEP 2020f). Average dissolved oxygen levels in both the freshwater and marine portions of Goodbys Creek were above the respective WQC from 2020 to 2022, although more than 25% of individual samples were below the dissolved oxygen WQC in the marine reach (2326B).  Chlorophyll-a concentrations in the marine reach exceeded the WQC in every sample measured from 2020 to 2021, but no chlorophyll-a data were available in 2022. The freshwater reach of Goodbys Creek (2326A) was verified as Impaired for elevated iron concentrations based on the number of exceedances for the sample size, although no iron measurements were reported 2020-2022 (DEP 2020g). The marine reach (2326B) is also verified as impaired for iron (DEP 2022), and the marine reach has exceeded the iron WQC in all but one sample 2020-2022, with average levels triple the WQC in 2021-2022. FDEP has assigned a medium priority for the development of a TMDL to address iron levels in Goodbys Creek.

Average fecal indicator bacteria levels exceeded the reference value in 2020-2022 in both marine and freshwater reaches.  A TMDL report is available for fecal coliform in Goodbys Creek (Wainwright 2005b), with an 87% reduction of anthropogenic fecal coliform loading. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Subsequently, a BMAP for Goodbys Creek was legally adopted in 2009 (DEP 2009b).  In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive.  Based on this work, WBID 2326A in Goodbys Creek was suspected to have sources of untreated human waste present, and WBID 2326B was known to have sources of untreated human waste present (DEP 2019a). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.  In 2020, the freshwater portion of Goodbys Creek was added to FDEP’s study list to monitor the response in fecal coliform (E. coli)  levels to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f).

No recent measurements were available in WIN between 2020 and 2022 for the freshwater reach (2326A) for the following parameters: Chlorophyll-a, Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc.

Historical water quality data for Goodbys Creek are available in previous versions of the River Report.

Table 2.18 Water quality data for Goodbys Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW5.39
(1 of 10 samples)
5.95
(1 of 10 samples)
5.02 ± 0.32
(0 of 11 samples)
≥4.0 SW5.45
(0 of 9 samples)
6.70
(1 of 14 samples)
5.29 ± 0.46
(6 of 19 samples)
Total Nitrogen (mg/L)<1.540.92
(0 of 4 samples)
0.82
(0 of 3 samples)
Not available
Total Phosphorus (mg/L)<0.120.11
(1 of 4 samples)
0.10
(1 of 10 samples)
Not available
Chlorophyll-a (µg/L)5.4 SW18.45
(4 of 4 samples)
24.03
(10 of 10 samples)
Not available
Arsenic (µg/L)≤50 SW2.35
(0 of 4 samples)
3.15
(0 of 5 samples)
2.78 ± 0.25
(0 of 12 samples)
Cadmium (µg/L)<8.8 SW0.01
(0 of 4 samples)
0.03
(0 of 5 samples)
0.02 ± 0.004
(0 of 12 samples)
Copper (µg/L)<3.7 SW1.81
(0 of 4 samples)
1.72
(0 of 5 samples)
1.46 ± 0.15
(0 of 12 samples)
Iron (mg/L)<0.3 SW0.58
(4 of 4 samples)
1.03
(5 of 5 samples)
1.00 ± 0.13
(11 of 12 samples)
Lead (µg/L)<8.5 SW0.71
(0 of 4 samples)
0.44
(0 of 5 samples)
0.41 ± 0.05
(0 of 12 samples)
Nickel (µg/L)<8.3 SW0.25
(0 of 4 samples)
0.45
(0 of 5 samples)
0.52 ± 0.12
(0 of 12 samples)
Silver (µg/L)<0.92 SW0.01
(0 of 4 samples)
0.01
(0 of 5 samples)
0.01 ± 0.002
(0 of 12 samples)
Zinc (µg/L)<86 SW5.00
(0 of 4 samples)
13.00
(0 of 5 samples)
6.25 ± 1.25
(0 of 12 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)E. coli <410 FW770
(10 of 18 samples)
640
(12 of 17 samples)
1294 ± 188
(9 of 9 samples)
E. coli <410 SW304 ± 78
(1 of 4 samples)
Enterococci <130 SW521 ± 240
(9 of 9 samples)
Turbidity (NTU)<296.13
(0 of 4 samples)
6.36
(0 of 5 samples)
Not available
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.14. Greenfield Creek

2.7.14.1. About Greenfield Creek

Figure 2.43 Greenfield Creek (WBID 2240A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.43 Greenfield Creek (WBID 2240A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • West of the Intracoastal Waterway
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 2.9 sq. mi.
    • Beneficial Use: Class III F/M

    (2240A Recreational – Marine, 2240B Recreational – Freshwater)

2.7.14.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Greenfield Creek WBID 2240A (marine) and 2240B (freshwater) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.19.

2.7.14.3. Discussion

Water quality data for Greenfield Creek are shown in Table 2.19. Average phosphorus levels were historically higher than the recently updated WQC (DEP 2015c; DEP 2016d; DEP 2016i), but data from 2020 through 2022 indicate that average concentrations of phosphorus and dissolved oxygen were within acceptable limits.  However, four of ten dissolved oxygen samples in the marine reach (2240A) were lower than the WQC. Average chlorophyll-a concentrations in the marine reach (2240A) remained higher than the WQC in 2020-2022, while average chlorophyll-a levels in the freshwater reach were below the WQC in 2021-2022.  Dissolved oxygen was removed from the verified impaired list (DEP 2016h) in Greenfield Creek. Greenfield Creek was verified impaired for mercury (DEP 2016h), but this has been addressed in the statewide mercury TMDL already in place (DEP 2013c).

A TMDL report (Wainwright and Hallas 2009a) was released to address fecal coliform, with a 70% reduction of sources, and a BMAP for Greenfield Creek (DEP 2010a) was legally adopted in August 2010. The Greenfield Creek watershed does not contain any permitted point sources for industrial wastewater. It contains the Girvin Road Landfill, which has been inactive since 1992; this landfill received not only solid waste, but sludge from the Neptune Beach Sewage Treatment Plant. The watershed also contains numerous outfalls for stormwater discharge. FDEP reported improvement in the frequency of fecal coliform exceedances in the freshwater segment of Greenfield Creek, but the last fecal coliform measurements in Greenfield Creek before 2018 date back to 2008.  Recent measurements indicate ongoing issues with elevated fecal indicator bacteria levels, as the average levels were several times higher than the WQC in 2020-2022. Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3. In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive.  The source of fecal coliform in Greenfield Creek was unknown (DEP 2019a). In 2020, the freshwater portion of Greenfield Creek was added to FDEP’s study list to monitor the response in fecal coliform (E. coli) levels to ongoing restoration activities taking as part of the existing BMAP (DEP 2020f).

Historical water quality data for these parameters in Greenfield Creek are available in previous versions of the River Report. 

Table 2.19 Water quality data for Greenfield Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW7.23
(0 of 2 samples)
5.84
(0 of 10 samples)
5.30 ± 0.45
(0 of 9 samples)
≥4.0 SW5.95
(1 of 6 samples)
6.14
(1 of 4 samples)
5.20 ± 0.94
(4 of 10 samples)
Total Nitrogen (mg/L)<1.54 FW0.91
(0 of 5 samples)
0.98
(0 of 4 samples)
1.09 ± 0.08
(0 of 5 samples)
<1.54 SW0.88 ± 0.07
(0 of 5 samples)
Total Phosphorus (mg/L)<0.12 FW0.09
(0 of 5 samples)
0.09
(0 of 9 samples)
0.07 ± 0.01
(0 of 5 samples)
<0.12 SW0.08 ± 0.01
(0 of 5 samples)
Chlorophyll-a (µg/L)<20 FWNot available7.90
(0 of 5 samples)
7.49 ± 2.25
(0 of 5 samples)
<5.4 SW15
(4 of 4 samples)
14.35
(4 of 4 samples)
8.18 ± 1.43
(3 of 5 samples)
Arsenic (µg/L)≤50 FWNot available0.94
(0 of 9 samples)
Not available
≤50 SWNot available1.71 ± 0.18
(0 of 10 samples)
Cadmium (µg/L)<0.3 FWNot available0.01
(0 of 5 samples)
Not available
<8.8 SWNot available0.01
(0 of 4 samples)
0.03 ± 0.01
(0 of 10 samples)
Copper (µg/L)<9.3 FWNot available8.25
(1 of 5 samples)
Not available
<3.7 SWNot available5.79
(4 of 4 samples)
2.57 ± 0.60
(3 of 10 samples)
Iron (µg/L)<1.0 FWNot included in
2021 SORR
Not included in
2022 SORR
Not available
<0.3 SWNot included in
2021 SORR
Not included in
2022 SORR
0.36 ± 0.07
(4 of 10 samples)
Lead (µg/L)<3.2 FWNot available0.14
(0 of 5 samples)
Not available
<8.5 SWNot available0.30
(0 of 4 samples)
0.49 ± 0.09
(0 of 10 samples)
Nickel (µg/L)<52 FWNot available0.25
(0 of 5 samples)
Not available
<8.3 SWNot available0.50
(0 of 4 samples)
0.78 ± 0.12
(0 of 10 samples)
Silver (µg/L)<0.07 FWNot available0.01
(0 of 5 samples)
Not available
<0.92 SWNot available0.01
(0 of 4 samples)
0.02 ± 0.01
(0 of 10 samples)
Zinc (µg/L)<120 FWNot available10.50
(0 of 5 samples)
Not available
<86 SWNot available7.50
(0 of 4 samples)
6.00 ± 0.76
(0 of 10 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)E. coli <410 FW3800
(11 of 12 samples)
1480
(12 of 12 samples)
3125 ± 2042
(7 of 8 samples)
Enterococci <130 SW721 ± 306
(6 of 8 samples)
Turbidity (NTU)<29 FW3.9
(0 of 3 samples)
4.01
(0 of 9 samples)
2.86 ± 0.65
(0 of 5 samples)
<29 SW3.70 ± 0.33
(0 of 5 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.15. Hogan Creek

2.7.15.1. About Hogan Creek

Figure 2.44 The Hogan Creek Tributary (WBID 2252) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.44 The Hogan Creek Tributary (WBID 2252) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • Downtown Jacksonville
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 3.4 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater)

2.7.15.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Hogan Creek WBID 2252 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.20.

2.7.15.3. Discussion

Water quality data for Hogan Creek are shown in Table 2.20. The data available for Hogan Creek have been sporadic, with no metals data available in 2020-2022, and this limits their utility in assessing the water quality in Hogan Creek. Historical average phosphorus levels were higher than the recently updated WQC (DEP 2015c; DEP 2016d; DEP 2016i), and the average total phosphorus levels from 2020-2022 were at or near the WQC, although limited samples are reported. Chlorophyll-a and dissolved oxygen concentrations appear to be within acceptable limits.

A TMDL for fecal coliform in Hogan Creek was finalized in 2006 (Wainwright 2006d), with a 92% reduction of anthropogenic fecal coliform loading. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Subsequently, a BMAP for Hogan Creek was legally adopted in December 2009 (DEP 2009b). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3. Recent measurements indicate ongoing issues with elevated fecal coliform concentrations. In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies. They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive. Hogan Creek was found to have known sources of untreated human waste present (DEP 2019a).  In 2020, Hogan Creek was added to FDEP’s study list to monitor the response in fecal coliform levels to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f).

In 2012, COJ worked with the US Army Corps of Engineers to investigate the potential to remediate and restore the aquatic ecosystem through removal of accumulated sediment, removal of exotic vegetation, and creation of wetland habitats.  Fourteen sites within the Hogan Creek watershed were under consideration for restoration, but sampling of ten of these sites in 2003 revealed hazardous, toxic, and radioactive waste contamination in both the creek itself and the adjacent lands.  Ash deposits dating back to the early 20th century can be found in the Hogan Creek watershed, and these are known sources of hazardous and toxic waste. The USACE elected not to proceed with any work or action until these hazardous materials were removed, after which the project could be reconsidered (USACE 2012a). Groundwork Jacksonville is leading the design phase of the project and received a grant from the National Fish and Wildlife Foundation’s National Coastal Resilience Fund in 2022 to complete the project design. The design phase is expected to be completed in 2026.

No recent measurements were available in WIN between 2020 and 2022 for the following parameters: Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc

Historical water quality data for Hogan Creek are available in previous versions of the River Report. 

Table 2.20 Water quality data for Hogan Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)5.5
(0 of 12 samples)
6.39
(0 of 13 samples)
6.68 ± 0.47
(0 of 11 samples)
Total Nitrogen (mg/L)<1.541.22
(1 of 3 samples)
1.66
(2 of 2 samples)
1.23 ± 0.04
(0 of 4 samples)
Total Phosphorus (mg/L)<0.120.16
(3 of 3 samples)
0.11
(2 of 4 samples)
0.11 ± 0.01
(1 of 4 samples)
Chlorophyll-a (µg/L)<205.55
(0 of 2 samples)
3.28
(0 of 3 samples)
2.77 ± 0.45
(0 of 3 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)<4101240
(10 of 12 samples)
1790
(6 of 10 samples)
924 ± 509
(6 of 12 samples)
Turbidity (NTU)<2928.4
(1 of 3 samples)
7.48
(0 of 4 samples)
6.40 ± 0.35
(0 of 4 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.16. Intracoastal Waterway

2.7.16.1. About the Intracoastal Waterway

Figure 2.45 The Intracoastal Waterway Tributary (WBID 2205C) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.45 The Intracoastal Waterway Tributary (WBID 2205C) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • Near the mouth of the St. Johns River
    • Primary Land Use: Marsh/Wetland (Land Cover)
    • Current TMDL reports: None
    • 2022 Verified Impairment for Fecal coliform (Enterococci) and Iron
    • WBID Area: 23.9 sq. mi.
    • Beneficial Use: Class III M

    (Recreational – Marine)

2.7.16.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Intracoastal Waterway (ICW) WBID 2205C (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.21.

2.7.16.3. Discussion

Water quality data for the ICW are shown in Table 2.21. The ICW does not appear to provide a significant nutrient load to the St. Johns River. The Intracoastal Waterway was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue, which is addressed by the statewide mercury TMDL (DEP 2013c). Limited fecal indicator bacteria measurements were available prior to 2019, but the average fecal indicator bacteria levels in 2020-2022 all exceeded the WQC; the ICW is verified impaired for fecal coliform in 2022 (DEP 2022). The ICW is also verified impaired for iron concentrations in 2022 (DEP 2022). Iron concentrations were at the WQC in 2022.

Historical water quality data for the Intracoastal Waterway are available in previous versions of the River Report.

Table 2.21 Water quality data for the Intracoastal Waterway.

Water QualityAverage and Number of Samples º
ParameterCriteria (SW)202020212022
Dissolved Oxygen (mg/L)≥4.05.97
(0 of 31 samples)
5.99
(3 of 14 samples)
7.03 ± 0.34
(0 of 12 samples)
Total Nitrogen (mg/L)<1.54Not availableNot available0.57 ± 0.08
(0 of 4 samples)
Total Phosphorus (mg/L)<5.40.09
(1 of 14 samples)
0.03
(0 of 8 samples)
0.08 ± 0.01
(0 of 4 samples)
Chlorophyll-a (µg/L)<112.62
(0 of 14 samples)
0.86
(0 of 7 samples)
3.18 ± 0.70
(0 of 4 samples)
Arsenic (µg/L)≤508.8
(0 of 13 samples)
20.00
(0 of 2 samples)
2.50 ± 0.01
(0 of 4 samples)
Cadmium (µg/L)≤8.80.36
(0 of 13 samples)
0.50
(0 of 2 samples)
0.20 ± 0.05
(0 of 4 samples)
Copper (µg/L)≤3.72.52
(5 of 13 samples)
5.50
(2 of 2 samples)
2.66 ± 0.09
(0 of 4 samples)
Iron (mg/L)≤0.30.4
(9 of 13 samples)
0.11
(0 of 2 samples)
0.30 ± 0.05
(3 of 4 samples)
Lead (µg/L)≤8.50.52
(0 of 13 samples)
0.50
(0 of 2 samples)
0.29 ± 0.04
(0 of 4 samples)
Nickel (µg/L)≤8.31.17
(1 of 13 samples)
1.00
(0 of 2 samples)
0.62 ± 0.13
(0 of 4 samples)
Silver (µg/L)≤0.92*1.77
(1 of 13 samples)
0.50
(0 of 2 samples)
0.19 ± 0.06
(0 of 4 samples)
Zinc (µg/L)≤860.35
(0 of 13 samples)
5.00
(0 of 2 samples)
3.75 ± 1.25
(0 of 4 samples)
Fecal Indicator Bacteria (Enterococci) (CFU/100 mL)E. coli <410630
(3 of 7 samples)
1610
(3 of 6 samples)
3330 ± 1978
(3 of 3 samples)
Enterococci <130315
(1 of 1 samples)
Turbidity (NTU)<296.22
(0 of 13 samples)
2.56
(0 of 1 sample)
7.45 ± 1.75
(0 of 4 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.17. Julington Creek

2.7.17.1. About Julington Creek

Figure 2.46 The Julington Creek Tributary (WBID 2351) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.46 The Julington Creek Tributary (WBID 2351) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • East of the St. Johns River at the
      I-95/I-295/9A intersection
    • Primary Land Use: Marsh/Wetland (Land Cover)
    • Current TMDL reports:
      Fecal Coliform
    • 2022 Verified Impairment for
      Fecal coliform ( coli)
    • WBID Area: 20.4 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater

2.7.17.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Julington Creek WBID 2351 (DEP 2023b) shown above.  The filtered dataset reflects water column concentrations and was used to generate Table 2.22.

2.7.17.3. Discussion

Water quality data for Julington Creek are shown in Table 2.22, but the data available in WIN and STORET for Julington Creek are extremely limited. Julington Creek was identified as being impaired for iron in 2016, but it was delisted in 2020 because the iron levels were found to be the result of naturally occurring conditions (DEP 2016h; DEP 2020e).

The fecal coliform levels in Julington Creek were historically higher than the WQC. Thus, a TMDL for fecal coliform was published in 2009 (Rhew 2009d), with 59% reduction of contributing sources. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Average fecal indicator bacteria levels in 2020-2022 remain higher than the WQC.  In 2022, Julington Creek was verified as Impaired for fecal coliform (E. coli) based on the number of exceedances based on the sample size, and anthropogenic sources of fecal coliform had been identified (DEP 2020g; DEP 2022).

No recent measurements were available in WIN between 2020 and 2022 for the following parameters: Arsenic, Cadmium, Copper, Lead, Iron, Nickel, Silver, Zinc, Turbidity.

Historical water quality data for Julington Creek are available in previous versions of the River Report.

Table 2.22 Water quality data for Julington Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)7.06
(0 of 11 samples)
7.59
(0 of 11 samples)
6.56 ± 0.31
(0 of 12 samples)
Total Nitrogen (mg/L)<1.540.97
(0 of 3 samples)
Not available0.92 ± 0.01
(0 of 2 samples)
Total Phosphorus (mg/L)<0.120.02
(0 of 3 samples)
Not available0.02 ± 0.001
(0 of 2 samples)
Chlorophyll-a (µg/L)<202.33
(0 of 3 samples)
30.67
(3 of 3 samples)
2.00 ± 0.000
(0 of 2 samples)
Fecal Coliform (CFU/100 mL)<4001920
(4 of 11 samples)
520
(4 of 8 samples)
910 ± 367
(7 of 11 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.18. McCoy Creek

2.7.18.1. About McCoy Creek

Figure 2.47 The McCoy Creek Tributary (WBID 2257) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.47 The McCoy Creek Tributary (WBID 2257) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • West of the St. Johns River
      Downtown Jacksonville
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 5.34 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater

2.7.18.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the McCoy Creek WBID 2257 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.23.

2.7.18.3. Discussion

Water quality data for McCoy Creek are shown in Table 2.23. Average total phosphorus concentrations from 2020-2022 have fluctuated around the WQC, and around half of individual total phosphorus measurements during that time exceeded the WQC. Average DO concentrations have remained above the WQC from 2020-2022 on average; 5-10% of samples are below the WQC.  In 2020, McCoy Creek was added to the FDEP study list for dissolved oxygen (DEP 2020f). It is considered impaired for dissolved oxygen based on the number of exceedances for the sample size, but the causative pollutant has not yet been identified.

Average fecal coliform concentrations were historically above the WQC. Thus, a TMDL for fecal coliform was published in 2009 (Rich-Zeisler and Kingon 2009), with 84% reduction of contributing sources. (Note: the data analysis in the TMDL is based on different criteria than those used in this report). Subsequently, a BMAP for McCoy Creek was legally adopted in 2010 (DEP 2010a). Measurements from 2020-2022 indicate that fecal indicator bacteria levels remain a challenge in McCoy Creek.  Average bacterial levels and a large percentage of the individual samples exceeded the WQC 2020-2022. In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive. McCoy Creek was found to have known sources of untreated human waste present (DEP 2019a). In 2020, McCoy Creek was added to FDEP’s study list to monitor the response in fecal coliform levels to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f), Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.

No recent measurements were available in WIN between 2020 and 2022 for the following parameters: Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc.

Historical water quality data for these parameters in McCoy Creek are available in previous versions of the River Report.

Table 2.23 Water quality data for McCoy Creek

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)5.85
(10 of 104 samples)
5.64
(8 of 126 samples)
5.44 ± 0.15
(5 of 120 samples)
Total Nitrogen (mg/L)<1.540.92
(3 of 61 samples)
0.99
(2 of 37 samples)
1.16 ± 0.05
(5 of 83 samples)
Total Phosphorus (mg/L)<0.120.11
(39 of 76 samples)
0.13
(51 of 102 samples)
0.13 ± 0.01
(38 of 83 samples)
Chlorophyll-a (µg/L)<2011.52
(1 of 5 samples)
2.03
(0 of 3 samples)
6.57 ± 3.22
(0 of 3 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)E. coli <4101340
(78 of 112 samples)
1850
(95 of 112 samples)
1859 ± 361
(78 of 118 samples)
Enterococci <130230 ± 49
(3 of 3 samples)
Turbidity (NTU)<295.7
(0 of 43 samples)
8.48
(1 of 43 samples)
7.22 ± 0.94
(1 of 37 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.19. Mill Creek

2.7.19.1. About Mill Creek

Figure 2.48 The Mill Creek Tributary (WBID 2460) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.48 The Mill Creek Tributary (WBID 2460) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • East of the St. Johns River
      feeding into Sixmile Creek
    • Primary Land Use: Wetlands/forest
    • Current TMDL reports: Fecal Coliform, DO/Nutrients
    • 2022 Verified Impairment for Iron
    • WBID Area: 11.6 sq. mi.
    • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.19.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Mill Creek WBID 2460 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.24.

2.7.19.3. Discussion

Water quality data for Mill Creek are shown in Table 2.24. Mill Creek has been identified as impaired for dissolved oxygen and associated nutrients and, a TMDL addressing this was published in 2010 (Magley 2010), with a 30% reduction in total nitrogen and 30% reduction in total phosphorus. Limited measurements between 2020 and 2022 indicate elevated total phosphorus concentrations, with most samples exceeding the WQC. Average dissolved oxygen concentrations and individual dissolved oxygen measurements were both within acceptable limits, but no nutrient data were reported in 2021. Mill Creek was verified impaired for iron concentrations in 2022 (DEP 2022); the two samples taken in 2022 were below the WQC.

Historically, the fecal coliform level was above the WQC. Thus, a TMDL for fecal coliform was published in 2009 (Rhew 2009c), with a 72% reduction of contributing sources. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Half or more of the samples collected 2020-2022 exceeded the WQC for average fecal indicator bacteria levels, with average concentrations above the WQC in 2021-2022.

Historical water quality data for these parameters in Mill Creek are available in previous versions of the River Report.

Table 2.24 Water quality data for Mill Creek.

 

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW5.98
(0 of 4 samples)
5.13
(0 of 10 samples)
4.82 ± 0.68
(0 of 5 samples)
Total Nitrogen (mg/L)<1.541.19
(1 of 4 samples)
Not available1.02
(0 of 1 samples)
Total Phosphorus (mg/L)<0.120.17
(3 of 4 samples)
Not available0.25
(1 of 1 samples)
Chlorophyll-a (µg/L)<20 FW2.07
(0 of 4 samples)
Not available14.00
(0 of 1 samples)
Arsenic (µg/L)≤501.07
(0 of 4 samples)
Not available1.00 ± 0.24
(0 of 2 samples)
Cadmium (µg/L)≤0.30.01
(0 of 4 samples)
Not available0.01 ± 0.000
(0 of 2 samples)
Copper (µg/L)≤9.32.91
(0 of 4 samples)
Not available3.29 ± 0.95
(0 of 2 samples)
Iron (µg/L)<1.0 FWNot included in
2021 SORR
Not available0.30 ± 0.15
(0 of 2 samples)
Lead (µg/L)≤3.20.26
(0 of 4 samples)
Not available0.20 ± 0.10
(0 of 2 samples)
Nickel (µg/L)≤520.75
(0 of 4 samples)
Not available0.25 ± 0.000
(0 of 2 samples)
Silver (µg/L)≤0.070.01
(0 of 4 samples)
Not available0.00 ± 0.000
(0 of 2 samples)
Zinc (µg/L)≤1202.5
(2 of 4 samples)
Not available2.50 ± 0.000
(0 of 2 samples)
Fecal Indicator Bacteria (E. coli) (CFU/100 mL)<410360
(2 of 4 samples)
600
(5 of 10 samples)
634 ± 135
(2 of 2 samples)
Turbidity (NTU)<295.8
(0 of 4 samples)
Not available2.70
(0 of 1 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.20. Moncrief Creek

2.7.20.1. About Moncrief Creek

Figure 2.49 The Moncrief Creek Tributary (WBID 2228) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.49 The Moncrief Creek Tributary (WBID 2228) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • North of downtown Jacksonville
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP
    • 2022 Verified Impairment for Nutrients (Chlorophyll-a) (2228A), Copper (2228A), and Iron (2228A/2228B)
    • WBID Area: 5.9 sq. mi.
    • Beneficial Use: Class III F/M
      (2228A Recreational – Marine, 2228B Recreational – Freshwater)

2.7.20.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Moncrief Creek WBID 2228A (marine) and 2228B (freshwater) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.25.

2.7.20.3. Discussion

Water quality data for Moncrief Creek are shown in Table 2.25. Historical average phosphorus levels were higher than the recently updated WQC (DEP 2015c; DEP 2016d; DEP 2016i), and the average total phosphorus levels have remained near or above the WQC in 2020-2022. The marine reach (2228A) has especially high phosphorus levels double the WQC in 2022, although less sampling than the freshwater reach (2228B). Average nitrogen levels also exceed the WQC in the marine reach (2228A), while the freshwater reach (2228B) remains below the WQC. Dissolved oxygen concentrations were within acceptable limits on average.  Average chlorophyll-a concentrations are consistently above the WQC 2020-2022 in the marine reach (2228A).  In the freshwater reach (2228B), average chlorophyll-a concentrations were below the WQC.

Moncrief Creek was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue; however, Moncrief Creek was delisted (DEP 2015a) as it has been addressed by the statewide mercury TMDL (DEP 2013c). The marine reach (2228A) is verified impaired for copper and iron concentrations (DEP 2022). No metals data were available 2020-2022 for the marine reach. The freshwater reach of Moncrief Creek (2228B) has been identified as impaired for iron (DEP 2014c; DEP 2020g). FDEP considers Moncrief Creek a medium priority for development of TMDLs for iron levels (DEP 2016d). Based on very limited metals sampling 2020-2022 (3 total samples), the average concentrations of heavy metals were below the applicable WQC for the freshwater reach (2228B).

A TMDL report for fecal coliform was published for Moncrief Creek in 2006 (Wainwright 2006b), with an 83% reduction in contributing sources. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Subsequently, a BMAP for Moncrief Creek (DEP 2010a) was released in August 2010. Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3. While Moncrief Creek remains impaired for fecal coliform, the size of the exceedances has decreased since implementation of the BMAP; the median exceedance has decreased from 2,600 CFU/100 mL in the TMDL report to 1,300 CFU/100 mL in the first phase of the BMAP (2010-2014). (DEP 2016b). Fecal coliform measurements from 2020-2022 indicate that average fecal coliform levels remain elevated several times above the WQC. In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive. Moncrief Creek was found to have known sources of untreated human waste present (DEP 2019a). In 2020, both the freshwater and marine portions of Moncrief Creek were added to FDEP’s study list to monitor the response in fecal coliform levels (E. coli in the freshwater portions and Enterococcus in the marine portions) to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f).

COJ has chosen Moncrief Creek as a focus watershed to monitor progress in the reduction of pollution from stormwater flows.  Stormwater is the main source of the headwaters of Moncrief Creek, and there were 22 stormwater treatment ponds in the Moncrief Creek watershed in 2017.  COJ plans to sample Moncrief Creek quarterly with respect to its effectiveness in stormwater treatment pollution reduction (COJ 2017).

No recent measurements were available in WIN between 2020 and 2022 for the marine reach (2228A) for the following parameters: Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc.

Historical water quality data for Moncrief Creek are available in previous versions of the River Report.

Table 2.25 Water quality data for Moncrief Creek.

 

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW5.74
(1 of 42 samples)
5.92
(4 of 42 samples)
5.76 ± 0.25
(2 of 45 samples)
≥4.0 SW5.5
(0 of 4 samples)
6.38
(0 of 4 samples)
5.76 ± 0.50
(0 of 4 samples)
Total Nitrogen (mg/L)<1.54 FW0.87
(0 of 20 samples)
0.69
(0 of 11 samples)
0.93 ± 0.08
(1 of 21 samples)
<1.54 SW2.37 ± 0.33
(4 of 4 samples)
Total Phosphorus (mg/L)<0.12 FW0.15
(14 of 25 samples)
0.10
(7 of 29 samples)
0.11 ± 0.02
(6 of 21 samples)
<0.12 SW0.24 ± 0.01
(4 of 4 samples)
Chlorophyll-a (µg/L)<20 FW6.79
(3 of 22 samples)
11.51
(4 of 22 samples)
9.83 ± 3.62
(4 of 15 samples)
<5.4 SW12.18
(2 of 3 samples)
22.14
(5 of 5 samples)
34.00 ± 18.01
(3 of 3 samples)
Arsenic (¬µg/L)≤50 Not available1.36
(0 of 2 samples)
1.30
(0 of 1 samples)
Cadmium (¬µg/L)≤0.3 FWNot available0.01
(0 of 2 samples)
0.01
(0 of 1 samples)
Copper (¬µg/L)≤9.3 FWNot available1.39
(0 of 2 samples)
1.07
(0 of 1 samples)
Iron (mg/L)≤1.0 FWNot available0.69
(0 of 2 samples)
0.75
(0 of 1 samples)
Lead (¬µg/L)≤3.2 FWNot available0.67
(0 of 2 samples)
0.80
(0 of 1 samples)
Nickel (¬µg/L)≤52 FWNot available1.25
(0 of 2 samples)
1.25
(0 of 1 samples)
Silver (¬µg/L)≤0.07 FWNot available0.01
(0 of 2 samples)
0.01
(0 of 1 samples)
Zinc (¬µg/L)≤120 FWNot available12.50
(0 of 2 samples)
2.50
(0 of 1 samples)
Fecal Indicator Bacteria (CFU/100 mL)E. coli <410 FW490
(13 of 46 samples)
700
(19 of 44 samples)
1107 ± 491
(11 of 38 samples)
E. coli <410 SW4029 ± 3586
(2 of 3 samples)
Enterococci <130 SW364
(1 of 1 samples)
Turbidity (NTU)<29 FW9.35
(2 of 25 samples)
10.22
(3 of 29 samples)
15.41 ± 3.75
(5 of 21 samples)
<29 SW10.20 ± 0.80
(0 of 4 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.

2.7.21. Open Creek

2.7.21.1. About Open Creek

Figure 2.50 Open Creek (WBID 2299A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.50 Open Creek (WBID 2299A/B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • West of the Intracoastal Waterway,Southwest of Jacksonville Beach and Northwest of Ponte Vedra Beach
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 6.5 sq. mi.
    • Beneficial Use: Class III M & F

    (2299A Recreational – Marine, 2299B Recreational – Freshwater)

2.7.21.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Open Creek WBID 2299A (marine) and 2299B (freshwater) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.26.

2.7.21.3. Discussion

Water quality data for Open Creek are shown in Table 2.26. Limited water quality data were available in WIN for Open Creek in 2022. Open Creek has been identified as impaired for mercury (DEP 2016h) and is addressed in the statewide mercury TMDL already in place (DEP 2013c).  Open Creek was added to FDEP’s study list in 2020 for Biology in response to failing bioassessments of macroinvertebrates, but a causative pollutant has not been identified (DEP 2020f).

Average fecal indicator bacteria levels exceeded the WQC in 2020-2022. A TMDL report (Wainwright and Hallas 2009b) was released in 2009 to address fecal coliform, with a 60% reduction in contribution sources. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Subsequently, a BMAP to address this issue was legally adopted (DEP 2009b).  In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive.  Open Creek was suspected of having sources of untreated human waste present, and ruminant waste was detected in the waterbody (DEP 2019a).  In 2020, both the freshwater and marine portions of Open Creek were added to FDEP’s study list to monitor the response in fecal coliform levels (E. coli in the freshwater portions and Enterococcus in the marine portions) to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.

No recent measurements were available in WIN between 2020 and 2022 for the marine reach (2299A) for the following parameters: Chlorophyll-a, Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc.

Historical water quality data for these parameters in Open Creek are available in previous versions of the River Report. 

Table 2.26 Water quality data for Open Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW6.4
(0 of 11 samples)
6.46
(0 of 20 samples)
6.63 ± 0.17
(0 of 12 samples)
≥4.0 SW5.71
(0 of 4 samples)
5.74
(1 of 4 samples)
6.97 ± 0.17
(0 of 14 samples)
Total Nitrogen (mg/L)<1.540.86
(0 of 5 samples)
0.84
(0 of 3 samples)
Not available
Total Phosphorus (mg/L)<0.120.06
(0 of 5 samples)
0.08
(1 of 5 samples)
Not available
Chlorophyll-a (µg/L)<20 FW2.69
(0 of 4 samples)
5.63
(0 of 5 samples)
Not available
Arsenic (µg/L)≤50 FW0.98
(0 of 5 samples)
1.23
(0 of 10 samples)
Not available
Cadmium (µg/L)≤0.3 FW0.01
(0 of 5 samples)
0.02
(0 of 10 samples)
Not available
Copper (µg/L)≤9.3 FW5.19
(0 of 5 samples)
9.30
(2 of 10 samples)
Not available
Iron (µg/L)≤1.0 FW0.45
(0 of 5 samples)
0.47
(0 of 10 samples)
Not available
Lead (µg/L)≤3.2 FW0.1
(0 of 5 samples)
0.27
(0 of 10 samples)
Not available
Nickel (µg/L)≤52 FW0.45
(0 of 5 samples)
0.25
(0 of 10 samples)
Not available
Silver (µg/L)≤0.07 FW0.01
(0 of 5 samples)
0.01
(0 of 10 samples)
Not available
Zinc (µg/L)≤120 FW2.5
(0 of 5 samples)
3.50
(0 of 10 samples)
Not available
Fecal Indicator Bacteria(CFU/100 mL)E. coli <410 FW450
(8 of 15 samples)
1140
(18 of 22 samples)
961 ± 190
(7 of 9 samples)
E. coli <410 SW1776 ± 705
(2 of 2 samples)
Enterococci <130 SW531 ± 83
(3 of 3 samples)
Turbidity (NTU)<292.75
(0 of 4 samples)
3.68
(0 of 5 samples)
Not available
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.22. Ortega River

2.7.22.1. About the Ortega River

Figure 2.51 The Ortega River Tributary (WBID 2213P1 and 2249A) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.51 The Ortega River Tributary (WBID 2213P1 and 2249A) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • West of NAS Jacksonville
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform (2213P), DO/Nutrient (2213P)
    • 2022 Verified Impairment for Fecal coliform ( coli) (2249A)
    • WBID Area: 29.0 sq. mi.
    • Beneficial Use: Class III F/M

    (2213P1 Recreational – Marine, 2249A Recreational – Freshwater)

2.7.22.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Ortega River WBID 2213P1 (marine) and 2249A (freshwater) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.27.

2.7.22.3. Discussion

Water quality data for the Ortega River are shown in Table 2.27. Average total phosphorus and dissolved oxygen concentrations were within acceptable limits in the freshwater reach (2249A), but outside of WQC for the marine reach (2213P1). Average chlorophyll-a concentrations have remained lower than the WQC in the freshwater reach of the Ortega River, but chlorophyll-a concentrations in the marine reach exceeded or were near the WQC from 2020-2022. Very few samples were available to assess in 2022. All samples 2020-2022 had metals concentrations lower than the WQC.

Average fecal indicator bacteria measurements were below the WQC in 2020 and 2022, and exceeded it in 2021, while roughly one-quarter to one-third of the individual samples exceeded the WQC. The TMDL reports for fecal coliform (Rhew 2009f) and DO/Nutrients (Magley 2009b) published in 2009 referred to WBID 2213P, of which WBID 2213P1 is a subset as a result of changes to the WBID boundaries.  In 2022, the freshwater reach of the Ortega River was verified as Impaired for elevated levels of fecal coliform (E. coli) based on the number of exceedances for the sample size, and anthropogenic sources of E. coli have been identified (DEP 2020g; DEP 2022).

Historical water quality data for the Ortega River are available in previous versions of the River Report. 

Table 2.27 Water quality data for the Ortega River.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW6.59
(2 of 16 samples)
7.39
(1 of 15 samples)
5.48 ± 0.45
(2 of 17 samples)
≥4.0 SW6.7
(0 of 9 samples)
6.05
(0 of 5 samples)
3.11 ± 0.54
(2 of 2 samples)
Total Nitrogen (mg/L)<1.54 FW1.01
(0 of 4 samples)
Not available1.29 ± 0.31
(2 of 6 samples)
<1.54 SW0.97 ± 0.05
(0 of 2 samples)
Total Phosphorus (mg/L)<0.12 FW0.09
(2 of 13 samples)
0.06
(0 of 13 samples)
0.08 ± 0.01
(0 of 6 samples)
<0.12 SW0.14 ± 0.02
(1 of 2 samples)
Chlorophyll-a (µg/L)<20 FW0.86
(0 of 7 samples)
0.78
(0 of 7 samples)
1.33 ± 0.30
(0 of 6 samples)
<5.4 SW36.4
(5 of 5 samples)
28.00
(3 of 3 samples)
5.16 ± 3.24
(1 of 2 samples)
Arsenic (¬µg/L)≤50 FW1.51
(0 of 10 samples)
1.08
(0 of 3 samples)
2.75 ± 0.000
(0 of 3 samples)
≤50 SWNot availableNot available
Cadmium (¬µg/L)≤0.3 FW0.03
(0 of 6 samples)
0.03
(0 of 3 samples)
0.03 ± 0.000
(0 of 3 samples)
≤8.8 SW0.01
(0 of 4 samples)
Not availableNot available
Copper (¬µg/L)≤9.3 FW2.93
(0 of 6 samples)
2.75
(0 of 3 samples)
6.13 ± 1.85
(0 of 3 samples)
≤3.7 SW2.61
(0 of 4 samples)
Not availableNot available
Iron (mg/L)≤1.0 FWNot included in
2021 SORR
Not included in
2022 SORR
0.59 ± 0.15
(0 of 3 samples)
≤0.3 SWNot included in
2021 SORR
Not availableNot available
Lead (¬µg/L)≤3.2 FW0.32
(0 of 6 samples)
0.39
(0 of 3 samples)
0.50 ± 0.13
(0 of 3 samples)
≤8.5 SW1.65
(0 of 4 samples)
Not availableNot available
Nickel (¬µg/L)≤52 FW0.25
(0 of 6 samples)
0.25
(0 of 3 samples)
1.92 ± 0.83
(0 of 3 samples)
≤8.3 SW1
(0 of 4 samples)
Not availableNot available
Silver (¬µg/L)≤0.07 FW0.03
(0 of 6 samples)
0.03
(0 of 3 samples)
0.03 ± 0.000
(0 of 3 samples)
≤0.92 SW0.01
(0 of 4 samples)
Not availableNot available
Zinc (¬µg/L)≤120 FW15
(0 of 6 samples)
10.83
(0 of 3 samples)
27.5 ± 0.000
(0 of 3 samples)
≤86 SW7.5
(0 of 4 samples)
Not availableNot available
Fecal Indicator Bacteria (CFU/100 mL)E. coli <410 FW330
(3 of 14 samples)
620
(3 of 10 samples)
275 ± 67
(3 of 12 samples)
Enterococci <130 SWNot availableNot available
Turbidity (NTU)<29 FW5.19
(0 of 15 samples)
3.31
(0 of 7 samples)
3.62 ± 1.06
(0 of 6 samples)
<29 SWNot availableNot available
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.23. Peters Creek

2.7.23.1. About Peters Creek

Figure 2.52 The Peters Creek Tributary (WBID 2444) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.52 The Peters Creek Tributary (WBID 2444) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • Flows into Black Creek
    • Primary Land Use: Forest/agriculture
    • Current TMDL reports:
      Lead, Fecal Coliform
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 20.5 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater)

2.7.23.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Peters Creek WBID 2444 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.28.

2.7.23.3. Discussion

Water quality data for Peters Creek are shown in Table 2.28. Limited data were reported 2020-2022. Historical fecal coliform levels were above the WQC. As a consequence, a TMDL report was published in 2009 to address this impairment (Rhew 2009b), with a 41% reduction in contributing sources. A lead TMDL report was published in 2009 (Lewis and Mandrup-Poulsen 2009), with an 80% reduction in contributing sources. The single reported lead measurement from 2020 was below the WQC.

Historical water quality data for Peters Creek are available in previous versions of the River Report.

Table 2.28 Water quality data for Peters Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)7.44
(0 of 5 samples)
7.69
(0 of 5 samples)
7.49 ± 0.56
(0 of 4 samples)
Total Nitrogen (mg/L)<1.540.42
(0 of 5 samples)
0.30
(0 of 1 sample)
Not available
Total Phosphorus (mg/L)<0.120.03
(0 of 5 samples)
0.03
(0 of 1 sample)
Not available
Chlorophyll-a (µg/L)<200.81
(0 of 5 samples)
1.66
(0 of 1 sample)
Not available
Arsenic (µg/L)≤500.13
(0 of 1 sample)
Not availableNot available
Cadmium (µg/L)≤0.30.01
(0 of 1 sample)
Not availableNot available
Copper (µg/L)≤9.30.2
(0 of 1 sample)
Not availableNot available
Iron (µg/L)≤1.0Not included in
2021 SORR
Not availableNot available
Lead (µg/L)≤3.20.1
(0 of 1 sample)
Not availableNot available
Nickel (µg/L)≤520.25
(0 of 1 sample)
Not availableNot available
Silver (µg/L)≤0.070.01
(0 of 1 sample)
Not availableNot available
Zinc (µg/L)≤1202.5
(0 of 1 sample)
Not availableNot available
Fecal Indicator Bacteria (CFU/100 mL)E. coli <410470
(2 of 5 samples)
240
(1 of 5 samples)
163 ± 41
(0 of 2 samples)
Turbidity (NTU)<2910.21
(0 of 5 samples)
7.70
(0 of 1 sample)
Not available
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.24. Pottsburg Creek

2.7.24.1. About Pottsburg Creek

Figure 2.53 The Pottsburg Creek Tributary (WBID 2265B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.53 The Pottsburg Creek Tributary (WBID 2265B) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • East of the St. Johns River at the
      Butler Blvd./I-95 interchange
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal coliform with BMAP
    • 2022 Verified Impairment for Nutrients (Chlorophyll-a) (2265D) and Iron (2265D)
    • WBID Area: 9.1 sq. mi.
    • Beneficial Use: Class III F/M

    (2265C Recreational – Freshwater, 2265D Recreational – Marine)

2.7.24.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Pottsburg Creek WBID 2265C (freshwater),and 2265D (marine) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.29.

2.7.24.3. Discussion

Water quality data for Pottsburg Creek are shown in Table 2.29. The marine reach of Pottsburg Creek (2265B) was verified as Impaired for nutrients in 2022 because of long-term chlorophyll-a concentrations exceeding the WQC (DEP 2020g; DEP 2022). Average phosphorus levels were near the WQC in 2020 (DEP 2015c; DEP 2016d; DEP 2016i) and the marine reach had concentrations of phosphorus and nitrogen near the WQC in 2022, with concentrations much higher (and fewer samples) than the freshwater reach (2265C). Average dissolved oxygen and chlorophyll-a were within limits in the freshwater reach, but average chlorophyll-a concentrations exceeded the WQC 2021-2022 in the marine reach.  The marine reach (2265C) was also verified impaired for iron concentrations in 2022 (DEP 2022); the single reported measurement in 2021 was below the WQC.

Average fecal coliform concentrations from 1999-2012 were well above the WQC, and fecal coliform levels in this residential tributary were identified as impaired in 2004. Consequently, a TMDL for fecal coliform was published (Rhew 2009d), with a 50% reduction in contributing sources. A BMAP for Pottsburg Creek (DEP 2010a) was legally adopted in August 2010. Pottsburg Creek remains impaired for fecal coliform, and the size of the exceedances has increased since implementation of the BMAP; the median exceedance increased from 800 CFU/100 mL in the TMDL report to 1,532 CFU/100 mL in the first phase of the BMAP (2010-2014) (DEP 2016b). Average fecal indicator bacteria levels exceeded the WQC 2020-2022. In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive. Pottsburg Creek was suspected of sources of untreated human waste present (DEP 2019a). In 2020, the freshwater portion of Pottsburg Creek was added to FDEP’s study list to monitor the response in fecal coliform levels to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.

No recent measurements were available in WIN between 2020 and 2022 for the freshwater reach (2265C) for the following parameters: Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc.

Historical water quality data for Pottsburg Creek are available in previous versions of the River Report.

Table 2.29 Water quality data for Pottsburg Creek.

 

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW6.25
(0 of 9 samples)
6.38
(0 of 11 samples)
6.08 ± 0.51
(1 of 12 samples)
≥4.0 SW6.91
(0 of 3 samples)
6.23
(2 of 7 samples)
6.52 ± 1.00
(0 of 4 samples)
Total Nitrogen (mg/L)<1.54 FW0.72
(0 of 7 samples)
1.18
(0 of 1 sample)
0.49 ± 0.01
(0 of 18 samples)
<1.54 SW1.48 ± 0.10
(0 of 3 samples)
Total Phosphorus (mg/L)<0.12 FW0.09
(1 of 7 samples)
0.05
(2 of 18 samples)
0.01 ± 0.001
(0 of 18 samples)
<0.12 SW0.11 ± 0.02
(1 of 2 samples)
Chlorophyll-a (µg/L)<20 FW2.33
(0 of 4 samples)
1.17
(0 of 12 samples)
2.42 ± 0.16
(0 of 18 samples)
<5.4 SW2.58
(0 of 3 samples)
5.95
(3 of 6 samples)
10.40 ± 5.33
(2 of 3 samples)
Arsenic (µg/L)≤50Not available1.69
(0 of 1 sample)
Not available
Cadmium (µg/L)≤0.3 FWNot availableNot availableNot available
Copper (µg/L)≤9.3 FWNot availableNot availableNot available
Iron (mg/L)≤1.0 FWNot availableNot availableNot available
Lead (µg/L)≤3.2 FWNot availableNot availableNot available
Nickel (µg/L)≤52 FWNot availableNot availableNot available
Silver (µg/L)≤0.07 FWNot availableNot availableNot available
Zinc (µg/L)≤120 FWNot availableNot availableNot available
Fecal Indicator Bacteria
(CFU/100 mL)
E. coli <410 FW610
(6 of 11 samples)
1170
(7 of 12 samples)
1239 ± 565
(4 of 4 samples)
E. coli <410 SW1122 ± 552
(2 of 3 samples)
Enterococci <130 SW199
(1 of 1 samples)
Turbidity (NTU)<29 FW3.45
(0 of 6 samples)
4.97
(0 of 6 samples)
Not available
< 29 SW5.30 ± 1.14
(0 of 3 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.25. Ribault River

2.7.25.1. About the Ribault River

Figure 2.54 The Ribault River Tributary (WBID 2224) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.54 The Ribault River Tributary (WBID 2224) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
      • Northwest of downtown Jacksonville
      • Primary Land Use: Residential
      • Current TMDL reports:
        Fecal Coliform
      • 2022 Verified Impairment for Nutrients (Macrophytes) (2224C) and Iron (2224A/2224B)
      • WBID Area: 9.7 sq. mi.
      • Beneficial Use: Class III F/M

      (2224A/B Recreational – Marine, 2224C Recreational – Freshwater)

2.7.25.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Ribault River WBIDs 2224A (marine), 2224B (marine), and 2224C (freshwater) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.30.

2.7.25.3. Discussion

Water quality data for the Ribault River are presented in Table 2.30. The Ribault River is located in a highly residential area, which has historically been a contributor to elevated levels of phosphorus found in the tributary. The average total phosphorus concentrations in the marine reach (2224A/B) fluctuated near the WQC in 2020, but no data were reported in WIN for 2021-2022.  Average chlorophyll­-a levels in the marine reach of the Ribault River exceeded the WQC in 2020, but no new measurements were reported 2021-2022.  The marine reach was verified impaired for nutrients (macrophytes) in 2022 (DEP 2022). The marine reach (2224A/B) was verified impaired for iron in 2022 (DEP 2022). Average levels of copper and iron in the marine reach of the Ribault River (2224A/B) exceeded their respective WQC in 2020, and iron levels again in 2022 (no data available 2021).

Historical fecal coliform levels were elevated. In 2014, the City of Jacksonville implemented a monitoring program for the Ribault River as part of a bacteria pollution control plan in concert with efforts related to stormwater management (COJ 2017); this plan was adopted in 2020. A TMDL report for fecal coliform in the Ribault River was published in 2006 (Wainwright 2006a), with a 50% reduction in contributing sources. (note: the data analyses in the TMDL are based on different criteria than those used in this report). Average fecal indicator bacteria concentrations and over half of the individual fecal indicator bacteria measurements from 2020-2022 were higher than the WQC.  In 2020, the Ribault River was added to FDEP’s study list to monitor the response in fecal coliform levels (E. coli in the freshwater portions and Enterococcus in the marine portions) to ongoing restoration activities taking place as part of the Bacterial Pollution Control Plan (DEP 2020f).

No recent measurements were available in WIN between 2020 and 2022 for the freshwater reach (2224C) for the following parameters: Total Nitrogen, Total Phosphorus, Chlorophyll-a, Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc, Turbidity.

Historical water quality data for these parameters in the Ribault River are available in previous versions of the River Report.

Table 2.30 Water quality data for the Ribault River.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)6.93
(1 of 8 samples)
7.18
(0 of 8 samples)
6.89 ± 0.48
(0 of 12 samples)
≥4.0 SW6.47
(3 of 44 samples)
7.01
(0 of 35 samples)
6.83 ± 0.19
(0 of 42 samples)
Total Nitrogen (mg/L)<1.54 SW0.89
(0 of 4 samples)
Not availableNot available
Total Phosphorus (mg/L)<0.12 SW0.11
(0 of 4 samples)
Not availableNot available
Chlorophyll-a (µg/L)<5.4FW SWNot availableNot availableNot available
Arsenic (µg/L)≤50 SW1.08
(0 of 4 samples)
Not available0.78 ± 0.11
(0 of 4 samples)
Cadmium (µg/L)&#8+B8804;0.3 FWNot availableNot available0.01 ± 0.000
(0 of 4 samples)
Copper (µg/L)≤9.3 FWNot availableNot available1.84 ± 0.23
(0 of 4 samples)
Iron (mg/L)≤1.0 FWNot availableNot available0.66 ± 0.05
(4 of 4 samples)
Lead (µg/L)≤3.2FWNot availableNot available1.16 ± 0.24
(0 of 4 samples)
Nickel (µg/L)≤52 FWNot availableNot available1.25 ± 0.000
(0 of 4 samples)
Silver (µg/L)≤0.07 FWNot availableNot available0.00 ± 0.000
(0 of 4 samples)
Zinc (µg/L)≤120 FWNot availableNot available12.5 ± 0.000
(0 of 4 samples)
Fecal Indicator Bacteria (CFU/100 mL)E. coli <410 FW1870
(26 of 47 samples)
1460
(25 of 43 samples)
368 ± 103
(2 of 8 samples)
Enterococci <130 FW384
(1 of 1 samples)
E. coli <410 SW1728 ± 564
(15 of 22 samples)
Enterococci <130 SW177 ± 58
(6 of 11 samples)
Turbidity (NTU)<298.35
(0 of 4 samples)
Not availableNot available
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.27. Sixmile Creek

2.7.27.1. About the Sixmile Creek

Figure 2.56 The Sixmile Creek Tributary (WBID 2411) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.56 The Sixmile Creek Tributary (WBID 2411) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • East of the St. Johns River in St. Johns County
    • Primary Land Use: Forested/Wetland
    • Current TMDL reports: None
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 59.5 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater)

2.7.27.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Sixmile Creek WBID 2411 (DEP 2023b) shown above.

2.7.27.3. Discussion

No water quality data for Sixmile Creek were available in WIN or STORET since 2015.  Historically, dissolved oxygen levels in Sixmile Creek were relatively low compared to other tributaries. Chlorophyll-a and silver levels exceeded WQC in the past, but both had been decreasing. The last reported silver and chlorophyll-a measurements were from 2011 and 2015, respectively.

Historical water quality data for these parameters in Sixmile Creek are available in previous versions of the River Report.

2.7.26. Rice Creek

2.7.26.1. About the Rice Creek

Figure 2.55 The Rice Creek Tributary (WBID 2567A/B).
Figure 2.55 The Rice Creek Tributary (WBID 2567A/B).
    • West of Palatka
    • Primary Land Use: Forested/Wetland
    • Current TMDL reports: None
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 31.1 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater)

2.7.26.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Rice Creek WBID 2567A/B (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.31.

2.7.26.3. Discussion

Water quality data for Rice Creek are shown in Table 2.31. Rice Creek is predominantly surrounded by wetlands, forests including the Rice Creek Wildlife Management Area, and a pulp mill (Georgia-Pacific). Water quality parameters were generally within acceptable limits with regards to respective WQC. Rice Creek was identified as being impaired for dioxin (DEP 2014c), but it is no longer listed as such.

Historical water quality data for Rice Creek are available in previous versions of the River Report.

Table 2.31 Water quality data for Rice Creek.

 

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)201920202021
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)6.20
(0 of 32 samples)
5.05
(11 of 59 samples)
5.20
(1 of 35 samples)
Total Nitrogen (mg/L)<1.540.73
(0 of 16 samples)
0.96
(1 of 5 samples)
0.95
(0 of 1 sample)
Total Phosphorus (mg/L)<0.120.06
(0 of 20 samples)
0.07
(1 of 19 samples)
0.06
(0 of 17 samples)
Chlorophyll-a (µg/L)<202.71
(0 of 16 samples)
9.03
(2 of 17 samples)
9.32
(1 of 10 samples)
Arsenic (µg/L)≤500.74
(0 of 5 samples)
2.02
(0 of 13 samples)
1.50
(0 of 8 samples)
Cadmium (µg/L)≤0.30.07
(0 of 5 samples)
0.02
(0 of 13 samples)
0.02
(0 of 8 samples)
Copper (µg/L)≤9.31.74
(0 of 5 samples)
2.36
(0 of 13 samples)
2.12
(0 of 8 samples)
Lead (µg/L)≤3.20.24
(0 of 5 samples)
0.37
(0 of 13 samples)
0.31
(0 of 8 samples)
Nickel (µg/L)≤522.25
(0 of 5 samples)
1.67
(0 of 13 samples)
1.19
(0 of 8 samples)
Silver (µg/L)≤0.070.07
(1 of 5 samples)
0.02
(0 of 13 samples)
0.02
(0 of 8 samples)
Zinc (µg/L)≤1209.50
(0 of 5 samples)
9.04
(0 of 13 samples)
2.50
(0 of 8 samples)
Turbidity (NTU)<293.38
(0 of 16 samples)
3.29
(0 of 17 samples)
3.59
(0 of 10 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted. 
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.


2.7.28. Strawberry Creek

2.7.28.1. About the Strawberry Creek

Figure 2.57 The Strawberry Creek Tributary (WBID 2239) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.57 The Strawberry Creek Tributary (WBID 2239) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • Flows into the Arlington River
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform
    • Not included in 2022 Verified List of Impaired Waters
    • WBID Area: 4.6 sq. mi.
    • Beneficial Use: Class III F

    (Recreational – Freshwater)

2.7.28.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Strawberry Creek WBID 2239 (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate Table 2.32.

2.7.28.3. Discussion

Water quality data for Strawberry Creek are presented in Table 2.32. Average phosphorus concentrations were near the WQC and average nitrogen concentrations exceeded the WQC in 2022, despite limited sampling for assessment. Water quality data for metals is extremely limited, with only one measured sample in 2019 and no other data available in WIN or STORET for metals since 2007. Historical fecal coliform levels were above the WQC. Thus, a TMDL report for fecal coliform in Strawberry Creek was published in 2009 (Rhew 2009e), with a 58% reduction in contributing sources. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Measurements in 2020-2022 indicate continued elevated fecal indicator bacteria levels, with average fecal indicator bacteria levels exceeding the WQC by several times 2021-2022. In 2018, the City of Jacksonville planned to implement a monitoring program for Strawberry Creek as part of a bacteria pollution control plan (BPCP) in concert with efforts related to stormwater management (COJ 2017); this plan was adopted in 2021. In 2020, Strawberry Creek was verified as Impaired for fecal coliform (E. coli) based on the number of exceedances for the sample size, and anthropogenic sources of bacteria were identified using genetic markers and chemical tracer data (DEP 2020g). The BCPC has resulted in the de-listing of Strawberry Creek from the verified impaired list in 2022 (DEP 2022).

No recent measurements were available in WIN between 2020 and 2022 for the following parameters: Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc.

Historical water quality data for these parameters in Strawberry Creek are available in previous versions of the River Report.

Table 2.32 Water quality data for Strawberry Creek.

Water QualityAverage and Number of Samples º
ParameterCriteria (FW)202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)6.46
(0 of 38 samples)
6.60
(0 of 30 samples)
6.25 ± 0.26
(0 of 40 samples)
Total Nitrogen (mg/L)<1.541.12
(1 of 3 samples)
1.47
(0 of 1 samples)
1.79 ± 0.22
(2 of 3 samples)
Total Phosphorus (mg/L)<0.120.06
(0 of 4 samples)
0.09
(1 of 6 samples)
0.10 ± 0.02
(1 of 3 samples)
Chlorophyll-a (µg/L)<202.26
(0 of 4 samples)
4.62
(0 of 6 samples)
3.10 ± 1.16
(0 of 3 samples)
Fecal Indicator Bacteria(CFU / 100 mL)E. coli <410960
(28 of 37 samples)
2920
(24 of 27 samples)
3803 ± 1140
(34 of 38 samples)
Enterococci <130109
(0 of 1 samples)
Turbidity (NTU)<294.55(0 of 4 samples)3.27
(0 of 6 samples)
6.43 ± 3.79
(0 of 3 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.29. Trout River

2.7.29.1. About the Trout River

Figure 2.58 The Trout River Tributary (WBIDs 2203/2203A/2223) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.58 The Trout River Tributary (WBIDs 2203/2203A/2223) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • North of downtown Jacksonville
    • Primary Land Use: Residential/Wetland
    • Current TMDL reports:
      Fecal coliform with BMAP (2203/2203A), DO/Nutrients (2203)
    • 2022 Verified Impairment for Nutrients (Chlorophyll-a) (2203A), Fecal coliform ( coli) (2203/2223), and Lead (2223)
    • Beneficial Use: Class III F/M

    (2203A, 2203B Recreational – Marine; 2203, 2223 Recreational – Freshwater)

2.7.29.2. Data sources

Result data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Trout River WBIDs 2203 (freshwater), 2203A (marine), 2203B (marine), and 2223 (freshwater) (DEP 2023b) shown above. The filtered dataset reflects water column concentrations and was used to generate2Table 2.31.

2.7.29.3. Discussion

Water quality data for the Trout River are shown in Table 2.32. Historically, overall (all WBIDs) average phosphorus levels were higher than the recently updated WQC (DEP 2015c; DEP 2016d; DEP 2016i). Average total phosphorus concentrations from 2020-2021 were near or exceeded the WQC, with concentrations exceeding the WQC in the freshwater reach (2203, 2223) in 2022. Average total nitrogen concentrations also exceeded the WQC in the freshwater reach in 2022.  Nutrient levels have been found to be, on average, higher than the WQC for WBID 2203 and a TMDL report to address this issue was published in 2009 (Magley 2009a), with a 30% reduction in total nitrogen and 70% reduction in total phosphorus from contributing sources. Dissolved oxygen concentrations were within acceptable limits in both the freshwater and marine reaches of the Trout River tributary, although there were several individual samples in the marine reach that exceeded WQC. Average chlorophyll-a levels in the marine reach of the Trout River (2203A/B) exceeded the WQC in 2021 (no measurements reported in 2020 or 2022).  From 2020-2022, fewer nutrient measurements were reported in WIN, making it difficult to draw accurate conclusions about the condition of the tributary. The Trout River (lower reach) was identified as being impaired for mercury based on elevated levels of mercury in fish tissue; however, Trout River was delisted (DEP 2016f), as it has been addressed by the statewide mercury TMDL (DEP 2013c). In 2020, the Trout River (2223) was identified as being Impaired for lead based on the number of exceedances for the sample size (DEP 2020g; DEP 2022). FDEP has assigned a low priority for the development of a TMDL to address elevated lead concentrations.

The historical fecal coliform level has been higher than the WQC.  A TMDL for fecal coliform was published in 2009 (Wainwright and Hallas 2009c) for WBIDs 2203 and 2203A, with a 60% reduction in contributing sources. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Subsequently, a BMAP for the Trout River (DEP 2010a) was legally adopted in August 2010. In the 2016 Annual Progress Report, 32% of lower Trout River fecal coliform measurements over a 7.5 year period ending June 30, 2016 exceeded the water quality criterion (400 CFU/100 mL) (DEP 2017b). While the lower Trout River remains impaired for fecal coliform, the size of the exceedances has decreased since implementation of the BMAP; the median exceedance decreased from 1,000 CFU/100 mL in the TMDL report to 721 CFU/100 mL in the first phase of the BMAP (2010-2014) (DEP 2016b). Average fecal indicator bacteria levels remain above or near the WQC 2020-2022 in the freshwater reach (E. coli) and saltwater reach (Enterococci).  As of 2016, there were 42 projects either planned or currently underway by COJ, JEA, and FDOT to address the BMAP in the Trout River watershed (DEP 2017b). In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies. They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive. WBID 2203B of the Trout River was suspected to have sources of untreated human waste present, and the source of fecal coliform in WBIDs 2203 and 2203A were unknown (DEP 2019a).  In 2020, the upper reach of the Trout River (WBID 2223) was verified as Impaired for fecal coliform (E. coli) based on the number of exceedances for the sample size, and anthropogenic sources of bacteria have been confirmed using genetic marker analysis and chemical tracer data (DEP 2020g; DEP 2022).  The middle reach of the Trout River middle segment (WBID 2203B) was added to FDEP’s study list in 2020 to monitor the response of fecal coliform (enterococci) concentrations to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.

No recent measurements were available in WIN between 2020 and 2022 for the marine reach (2203A, 2203B) for the following parameters: Arsenic, Cadmium, Copper, Iron, Lead, Nickel, Silver, Zinc, Turbidity.

Historical water quality data for the Trout River are available in previous versions of the River Report.

Table 2.32 Water quality data for the Trout River.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0) FW6.71
(1 of 20 samples)
6.53
(1 of 13 samples)
6.50 ± 0.46
(0 of 17 samples)
≥4.0 SW5.67
(4 of 18 samples)
6.55
(2 of 22 samples)
5.72 ± 0.45
(4 of 21 samples)
Total Nitrogen (mg/L)<1.54 FW1.02
(2 of 14 samples)
Not available1.61 ± 0.24
(3 of 4 samples)
<1.54 SWNot available
Total Phosphorus (mg/L)<0.12 FW0.1
(4 of 14 samples)
0.13
(5 of 8 samples)
0.13 ± 0.02
(3 of 4 samples)
<0.12 SWNot available
Chlorophyll-a (µg/L)<20 FW1.06
(0 of 13 samples)
1.07
(0 of 4 samples)
0.50 ± 0.000
(0 of 3 samples)
<5.4 SWNot available18.93
(3 of 3 samples)
Not available
Arsenic (µg/L)≤50 FW0.47
(0 of 4 samples)
Not availableNot available
Cadmium (µg/L)≤0.3 FW0.01
(0 of 4 samples)
Not availableNot available
Copper (µg/L)≤9.3 FW1.1
(0 of 4 samples)
Not availableNot available
Iron (µg/L)≤1.0 FWNot included in
2021 SORR
Not availableNot available
Lead (µg/L)≤3.2 FW0.36
(0 of 4 samples)
Not availableNot available
Nickel (µg/L)≤52 FW0.5
(0 of 4 samples)
Not availableNot available
Silver (µg/L)≤0.07 FW0.01
(0 of 4 samples)
Not availableNot available
Zinc (µg/L)≤120 FW10
(0 of 4 samples)
Not availableNot available
Fecal Indicator Bacteria

(E. coli) (CFU/100 mL)
E. coli <410 FW530
(17 of 35 samples)
490
(8 of 28 samples)
368 ± 58
(4 of 13 samples)
E. coli <410 SW94 ± 32
(0 of 3 samples)
Enterococci <130 SW149 ± 31
(8 of 14 samples)
Turbidity (NTU)<29 FW2.5
(0 of 12 samples)
3.48
(0 of 5 samples)
3.40 ± 0.41
(0 of 4 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.

2.7.30. Wills Branch

2.7.30.1.  About the Wills Branch

Figure 2.59 The Wills Branch Tributary (WBIDs 2282) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
Figure 2.59 The Wills Branch Tributary (WBIDs 2282) with sanitary sewer overflows reported by JEA in 2022 (JEA 2022b).
    • West of downtown Jacksonville
      Flows into the Cedar River
    • Primary Land Use: Residential
    • Current TMDL reports:
      Fecal Coliform with BMAP
    • Not included in 2022 Verified List of Impaired Waters
    • Beneficial Use: Class III F
      (Recreational – Freshwater)

2.7.30.2. Data sources

Data were historically downloaded from the FL STORET website (DEP 2010f), with recent data downloaded from WIN WAVES (DEP 2022f). Data were filtered based on the stations in the Wills Branch WBID 2282 (DEP 2023b) shown above.

2.7.30.3. Discussion

Water quality data for Wills Branch are presented in Table 2.34. Historically, average total phosphorus, dissolved oxygen and chlorophyll-aconcentrations were within acceptable limits. Fecal coliform levels were historically above the WQC. As a result, a TMDL for total and fecal coliform was published in 2006 (Wainwright 2006c) for Wills Branch, with an 80% reduction in contributing sources. (Note: the data analyses in the TMDL are based on different criteria than those used in this report). Subsequently, a BMAP for Wills Branch was legally adopted in 2010 (DEP 2010a). Average fecal indicator bacteria levels were higher than the WQC 2020-2022. In 2018, FDEP piloted microbial source tracking strategies in selected impaired waterbodies.  They found that the strategies used could be used to narrow down areas suspected of containing sources that actively contribute fecal indicating bacteria to water in order to identify and remediate them, but this work is resource-intensive.  Wills Branch was found to have known sources of untreated human waste present (DEP 2019a).  In 2020, Wills Branch was added to FDEP’s study list to monitor the response in fecal coliform (E. coli) levels to ongoing restoration activities taking place as part of the existing BMAP (DEP 2020f). Additional information about fecal coliform in the tributaries can be found in Section 2.6 and Table 2.3.

Historical water quality data for these parameters in Wills Branch are available in previous versions of the River Report.

Table 2.34 Water quality data for Wills Branch.

Water QualityAverage and Number of Samples º
ParameterCriteria202020212022
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)5.36
(2 of 12 samples)
7.26
(0 of 16 samples)
6.58 ± 0.36
(0 of 16 samples)
Total Nitrogen (mg/L)<1.541.03
(1 of 7 samples)
0.87
(0 of 4 samples)
1.17 ± 0.10
(0 of 9 samples)
Total Phosphorus (mg/L)<0.120.12
(3 of 7 samples)
0.08
(1 of 11 samples)
0.08 ± 0.01
(0 of 9 samples)
Chlorophyll-a (µg/L)<204.26
(0 of 6 samples)
4.24
(0 of 9 samples)
2.52 ± 0.82
(0 of 8 samples)
Arsenic (µg/L)≤50Not available0.31
(0 of 1 sample)
Not available
Cadmium (µg/L)≤0.3Not available0.01
(0 of 1 sample)
Not available
Copper (µg/L)≤9.3Not available1.46
(0 of 1 sample)
Not available
Iron (µg/L)≤1.0Not availableNot included in
2022 SORR
Not available
Lead (µg/L)≤3.2Not available0.30
(0 of 1 sample)
Not available
Nickel (µg/L)≤52Not available0.25
(0 of 1 sample)
Not available
Silver (µg/L)≤0.07Not available0.01
(0 of 1 sample)
Not available
Zinc (µg/L)≤120Not available12.50
(0 of 1 sample)
Not available
Fecal Indicator Bacteria (CFU / 100 mL) E.coli <410730
(6 of 11 samples)
2060
(13 of 14 samples)
1458 ± 192
(8 of 8 samples)
Turbidity (NTU)<293
(0 of 6 samples)
3.78
(0 of 11 samples)
3.17 ± 0.34
(0 of 9 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
° = Number of samples below Water Quality Criteria for Dissolved Oxygen; Number of samples above Water Quality Criteria for all other parameters.
FW = freshwater; SW = saltwater (marine). Values denoted with (*) indicate a proposed criterion, which has not yet been adopted.
Values denoted with (‡) are reference values based on EPA criteria (EPA 2010b), but the water body is not regulated by this standard.