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Council District Information

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2.7.2. Arlington River

2.7.2.1.  About the Arlington River

Figure 2.24
Figure 2.25 The Arlington River Tributary (WBID 2265A).
  • East of downtown Jacksonville
  • Primary Land Use: Residential
  • Current TMDL reports:
    Nutrients, Mercury
  • Verified Impaired 2016 (final):
    None
  • WBID Area: 1.6 sq. mi.
  • Beneficial Use: Class III M (Recreational – Marine)

2.7.2.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Arlington River WBID 2265A (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.3.

2.7.2.3. Discussion

Water quality data for the Arlington River are shown in Table 2.3. Average phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k) and the tributary has thus been identified 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. A TMDL report for nutrients was finalized in 2009 (Magley 2009c).

The Arlington River was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue; however, this is being delisted (DEP 2016h) as it has been addressed by the statewide mercury TMDL (DEP 2013e). The Arlington River is being delisted for chlorophyll-a as it has been addressed by the Nutrients TMDL (DEP 2016h).

Table 2.3 Water quality data for the Arlington River.
ParameterWater Quality Criteria (SW)ConcentrationSamplesSampling Period
LowAverageHigh
Dissolved Oxygen (mg/L)≤4.03.127.5112.591051999 - 2008
Total Nitrogen (μg/L)<1.540.311.082.53651999 - 2008
Total Phosphorus (mg/L)<0.120.050.130.27631999 - 2008
Chlorophyll-a (μg/L)<1107.1444311999 - 2007
Arsenic (μg/L)≤500.751.742.7202007 - 2008
Cadmium (μg/L)≤8.80.010.040.08202007 - 2008
Copper (μg/L)≤3.71.032.68.1202007 - 2008
Lead (μg/L)≤8.50.30.811.98202007 - 2008
Nickel (μg/L)≤8.30.310.672.36202007 - 2008
Silver (μg/L)≤0.92*0.010.030.04202007 - 2008
Zinc (μg/L)≤862.58.8923202007 - 2008
Fecal Coliform (log #/100 mL)<2.60.41.532.78382000 - 2007
Turbidity (NTU)<291.48.2834901999 - 2007
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.25
Figure 2.25 Big Fishweir Creek (WBID 2280).

• West of Downtown, South of I-10
• Primary Land Use: Residential
• Current TMDL reports: Fecal Coliform with BMAP (2009)
• Verified Impaired 2016 (final):
Iron (2280A med)
• WBID Area: 3.7 sq. mi.
• Beneficial Use: Class III F (Recreational – Freshwater)

2.7.3.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Big Fishweir Creek WBID 2280 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.4.

2.7.3.3. Discussion

Water quality data for Big Fishweir Creek are shown in Table 2.4. A TMDL report (Wainwright and Hallas 2009a) was released in 2009 to address Fecal coliform and as a result has been delisted from the Impaired Waters list (DEP 2016h) (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). Annual Progress Reports for this BMAP were issued in 2011 (DEP 2011a), 2012 (DEP 2012) and 2013 (DEP 2014b); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT. Big Fishweir Creek has been listed as Impaired for high levels of iron (DEP 2016j).

Table 2.4 Water quality data for Big Fishweir Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.14.4911.82442006 - 2016
Total Nitrogen (mg/L)<1.540.270.93541999 - 2007
Total Phosphorus (mg/L)<0.120.050.140.6701999 - 2007
Chlorophyll-a (µg/L)<200.288.2759182007
Arsenic (µg/L)≤500.111.234.1202005 - 2007
Cadmium (µg/L)≤0.30.013.07105582002 - 2007
Copper (µg/L)≤9.30.023.6850682002 - 2007
Lead (µg/L)≤3.208.0850652002 - 2007
Nickel (µg/L)≤5204.3650682002 - 2007
Silver (µg/L)≤0.070.010.020.04202005 - 2007
Zinc (µg/L)≤1200.0410.5950702002 - 2007
Fecal Coliform (log #/100 mL)<2.6-0.523.235.414511999 - 2014
Turbidity (NTU)<2907.21521401999 - 2013
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.26
Figure 2.27 The Black Creek Tributary (WBID 2415A/B/C).
  • West of the St Johns River at the Clay/Duval county line
  • Primary Land Use: Forested
  • Current TMDL reports: Lead – 2415B, 2415C
  • Verified Impaired 2016 (final): None
  • WBID Area: 15.4 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.4.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Black Creek WBID 2415A/B/C (DEP 2014d) shown above. The aggregate (all three WBIDs) filtered dataset was used to generate Table 2.5 and Figures 2.28 and 2.29.

2.7.4.3. Discussion

Water quality data for Black Creek are shown in Table 2.5. As compared to other tributaries in the LSJRB, Black Creek is less impacted for the majority of the assessed water quality parameters. Lead has been identified as impaired in Black Creek and a TMDL report was published in 2009 (Lewis and Mandrup-Poulsen 2009) to address this issue.

Table 2.5 Water quality data for Black Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.56.1912.455701997 - 2016
Total Nitrogen (mg/L)<1.540.070.72.113741997 - 2015
Total Phosphorus (mg/L)<0.120.030.10.518111997 - 2016
Chlorophyll-a (µg/L)<2003.2953.294381997 - 2016
Arsenic (µg/L)≤5001.319.742861997 - 2016
Cadmium (µg/L)≤0.300.0813161997 - 2016
Copper (µg/L)≤9.301.4122.823761997 - 2016
Lead (µg/L)≤3.200.86.783521997 - 2016
Nickel (µg/L)≤5201.220.553591997 - 2016
Silver (µg/L)≤0.0700.138.442511997 - 2016
Zinc (µg/L)≤1200.144.9656.74041997 - 2016
Fecal Coliform (log #/100 mL)<2.60.181.422.96982002 - 2013
Turbidity (NTU)<290.86.513684921997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.

 

Figure 2.27
Figure 2.28 Monthly dissolved oxygen concentrations (data from 1997-2014) in Black Creek. Data are presented as a box-and-whiskers plot with the green boxes indicating the median ± 25% (middle 50% of the data) and horizontal lines indicate the median values. Blue whiskers indicate the minimum and maximum values in the data set.
Figure 2.28
Figure 2.29 Monthly chlorophyll-a concentration (μg/L), based on data from 1997 through 2014 in Black Creek.

The maximum cadmium concentrations detected were more than threefold higher than the freshwater criterion (Table 2.5 above). In periods of higher salinity, elevated copper and nickel concentrations may be problematic, as they were detected at levels above WQC. The maximum silver concentration detected in Black Creek was more than 100 times the freshwater criterion and also substantially elevated above the SW criterion. The concentrations of silver detected have the potential for causing toxic effects to aquatic life in this area.

2.7.5. Broward River

2.7.5.1. About the Broward River

Figure 2.29
Figure 2.30 The Broward River Tributary (WBID 2191A/B).
  • Between downtown and Jacksonville International Airport (JIA)
  • Primary Land Use: Residential/Forested
  • Current TMDL reports: Mercury
  • Verified Impaired 2016 (final): Fecal Coliform (2191B low)
  • WBID Area: 14.4 sq. mi.
  • Beneficial Use: Class III M/ F (Marine – 2191B, Freshwater – 2191A)

2.7.5.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Broward River WBID 2191A/B (DEP 2014d) shown above. The aggregate (both WBIDs) filtered dataset was used to generate Table 2.6.

2.7.5.3. Discussion

Water quality data for the Broward River are shown in Table 2.6. Due to recent split of WBID 2191 into a marine (2191B) and a freshwater (2191A) WBIDs the data is an aggregate of the and thus both FW and SW WQC’s are included in the table. Average phosphorus levels were higher than the 2010 updated WQC (DEP 2015d; DEP 2016e; DEP 2016k). The maximum fecal coliform level at times exceeded the WQC of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units per 100 mL (Table 2.6), and as a result WBID 2191B is considered impaired for fecal coliform. The Broward River was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue, however this is being delisted (DEP 2016h) as it has been addressed by the statewide mercury TMDL (DEP 2013e).

Table 2.6 Water quality data for Broward River.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. FW ‡4.0 SW0.35.0916.11891999 - 2012
Total Nitrogen (mg/L)<1.54‡0.380.971.63341999 - 2008
Total Phosphorus (mg/L)<0.12‡0.030.160.26321999 - 2008
Chlorophyll-a (μg/L)<20‡ FW <11‡ SW0.4310.2252242000 - 2007
Arsenic (μg/L)‡50 FW ‡50 SW0.521.542.6271999 - 2007
Cadmium (μg/L)‡0.3 FW ‡8.8 SW0.010.635281999 - 2007
Copper (μg/L)‡9.3 FW ‡3.7 SW0.381.655281999 - 2007
Lead (μg/L)‡3.2 FW ‡8.5 SW0.13.3420271999 - 2008
Nickel (μg/L)‡52 FW ‡8.3 SW0.381.9510281999 - 2007
Silver‡0.07 FW ‡0.92* SW0.010.615271999 - 2007
Zinc (μg/L)‡120 FW ‡86 SW2.57.3320281999 - 2007
Fecal Coliform (log #/100 mL)<2.6‡0.952.44.31611999 - 2012
Turbidity (NTU)<291.89.427461999 - 2007
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.30
Figure 2.31 Butcher Pen Creek (WBID 2322).
  • A tributary of the Cedar River
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform with BMAP (2009)
  • Verified Impaired 2016 (final): None
  • WBID Area: 1.31 sq. miles
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.6.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Butcher Pen Creek WBID 2322 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.7.

2.7.6.3. Discussion

Water quality data for Butcher Pen Creek are shown in Table 2.7. Average phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k). The average fecal coliform level exceeds the WQC of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units per 100 mL (Table 2.7). As a result, a TMDL report was published in 2005 (Wainwright 2005a) to address this issue. Subsequently, a BMAP to address this issue was legally adopted (DEP 2009b). Annual Progress Reports for this BMAP were issued in 2011 (DEP 2011a), 2012 (DEP 2012) and 2013 (DEP 2014b); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT. Butcher Pen Creek was previously impaired for chlorophyll-a, but annual levels have fallen below the nutrient threshold, and it has been delisted for chlorophyll-a (DEP 2016h).

Table 2.7 Water quality data for Butcher Pen Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.24.4910.72312002 - 2016
Total Nitrogen (mg/L)<1.540.61.393.06282001 - 2007
Total Phosphorus (mg/L)<0.120.10.260.97282001 - 2007
Chlorophyll-a (µg/L)<200.4317.2100272002 - 2007
Arsenic (µg/L)≤500.251.914.6172007
Cadmium (µg/L)≤0.30.010.040.13172007
Copper (µg/L)≤9.30.252.174.12262004 - 2007
Lead (µg/L)≤3.20.252.358.75182004 - 2007
Nickel (µg/L)≤520.51.062.93172007
Silver≤0.070.010.020.06172007
Zinc (µg/L)≤1202.520.0191172007
Fecal Coliform (log #/100 mL)<2.61.823.755.051922002 - 2016
Turbidity (NTU)<29310.7169652001 - 2013
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.31
Figure 2.32 The Cedar River Tributary (WBID 2262 and 2213P2).
  • At the I-10/I-295 Interchange
  • Primary Land Use: Residential/Forested
  • Current TMDL reports: Fecal/Total Coliform – 2262
  • Verified Impaired 2016 (final): Iron (2213P2, 2262B med)
  • WBID Area: 22.8 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.7.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Cedar River WBID 2262 and 2213P2 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.8.

2.7.7.3. Discussion

Water quality data for the Cedar River are shown in Table 2.8. 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). Salinity levels, as influenced by tidal movement, are relatively low indicating that the Ortega River buffers the Cedar River significantly from marine water intrusion. Average dissolved oxygen levels were mostly above the WQC and stable across the river (Figure 2.33). Average total phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k), as were average levels of chlorophyll-a. Metal concentrations are mostly within acceptable limits, with the exception of copper and nickel, which are slightly elevated.

Table 2.8 Water quality data for the Cedar River.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.665.8412.42501998 - 2016
Total Nitrogen (mg/L)<1.540.190.994.711621998 - 2014
Total Phosphorus (mg/L)<0.120.010.160.451071998 - 2016
Chlorophyll-a (µg/L)<200.2820.61401341998 - 2016
Arsenic (µg/L)≤500.0054.2243.7831998 - 2016
Cadmium (µg/L)≤0.30.0010.3310671998 - 2016
Copper (µg/L)≤9.30.033.29401191998 - 2016
Lead (µg/L)≤3.202.74201901998 - 2016
Nickel (µg/L)≤520.033.4340721998 - 2016
Silver (µg/L)≤0.0700.312.28252005 - 2016
Zinc (µg/L)≤1206.4814.8249.33921998 - 2016
Fecal Coliform (log #/100 mL)<2.612.495.23801999 - 2012
Turbidity (NTU)<291.866.82190.81081998 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.

In 2004, Cedar River was identified as being impaired for both fecal and total coliforms (i.e., levels significantly above 400 CFU/100 mL) and as a result, a TMDL report was finalized in 2006 (Magley 2006b). (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.

Figure 2.32
Figure 2.33 Variation of the dissolved oxygen in the Cedar River going upstream (left to right). Data from 1998-2014.

2.7.8. Deep Creek

2.7.8.1. About Deep Creek

Figure 2.33
Figure 2.34 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
  • Verified Impaired 2016 (final): Iron (2589 med)
  • WBID Area: 60.5 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.8.2. Data sources

Data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Deep Creek WBIDs 2549 and 2589 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.9.

2.7.8.3. Discussion

Water quality data for Deep Creek are shown in Table 2.9. 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. Concentrations of total nitrogen were elevated (Figure 2.35) but not above the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k); however, levels of total phosphorus were significantly above the recommended WQC (Figure 2.36), and fluctuate seasonally. Non-point source rainwater runoff is likely the major cause of the elevated nitrogen/phosphorus concentrations in this area. Likewise, chlorophyll-a concentrations fluctuate, with relatively elevated levels in the summer months (Figure 2.37). Chlorophyll-a has been removed from the recent 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. Dissolved oxygen concentrations in these areas reflect these conditions, with lower dissolved oxygen concentrations observed in the summer months (Figure 2.38). In addition to nutrients, organic matter, temperature, and community structure (i.e., number and types of plants and 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 draft TMDL report for dissolved oxygen was published in 2009 (Magley 2009d) for WBID 2589 (Sixteen Mile Creek). Elevated concentrations of cadmium, copper, nickel, and silver have been detected in Deep Creek, as compared to the Class III WQC for metals.

Table 2.9 Water quality data for Deep Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)05.5820.865981997 - 2016
Total Nitrogen (mg/L)<1.540.271.4617.864161997 - 2015
Total Phosphorus (mg/L)<0.1200.312.299801997 - 2016
Chlorophyll-a (µg/L)<2009.15193.43581997 - 2016
Arsenic (µg/L)≤5002.217.043021997 - 2016
Cadmium (µg/L)≤0.300.111.282921997 - 2016
Copper (µg/L)≤9.301.8314.784121997 - 2016
Lead (µg/L)≤3.200.627.792011997 - 2016
Nickel (µg/L)≤5201.7834.82731997 - 2016
Silver (µg/L)≤0.0700.191.653101997 - 2016
Zinc (µg/L)≤1200.316.849.684031997 - 2016
Fecal Coliform (log #/100 mL)<2.61.882.52.7742002 - 2009
Turbidity (NTU)<290.237.281465441997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.

 

Figure 2.34
Figure 2.35 The yearly total nitrogen concentration in Deep Creek. All data are presented as a box-and-whiskers plot with green boxes indicating the median ± 25% (middle 50% of the data) and horizontal lines indicating median values. Blue whiskers indicate minimum and maximum values in the data set.
Figure 2.35
Figure 2.36 Yearly total phosphorus concentrations in Deep Creek. All data are presented as a box-and-whiskers plot with green boxes indicating the median ± 25% (middle 50% of the data) and horizontal lines indicating median values. Blue whiskers indicate minimum and maximum values in the data set.
Figure 2.36
Figure 2.37 Monthly chlorophyll-a concentration (g/L) in 1997 through 2008 in Deep Creek.
Figure 2.37
Figure 2.38 The monthly dissolved oxygen concentrations (data from 1977 to 2014) in Deep Creek. Data are presented as a box-and-whiskers plot with green boxes, indicating the median ± 25% (middle 50% of the data) and horizontal lines indicating median values. Blue whiskers indicate minimum and maximum values in the data set.

2.7.9. Doctors Lake

2.7.9.1. About Doctors Lake

Figure 2.38
Figure 2.39 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 (draft), DO/Nutrient – 2410 (draft), Silver – 2389/2410
  • Verified Impaired 2016 (final): Nutrients (Chlorophyll-a 2389 med), Nutrients (Total P 2389 med)
  • WBID Area: 8.4 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.9.2. Data sources

Result data was downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Doctors Lake WBIDs 2389 and 2410 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.10, with freshwater stream WQC’s reported. These should be regarded as guidelines only because Swimming pen creek (2389) is accessed as a stream, Doctors Lake (2410) 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 2.10. Although average total nitrogen and total phosphorus levels were within their WQC limits, average chlorophyll-a concentrations far exceeded the WQC, particularly in summer months (Figure 2.40), and average dissolved oxygen levels are well above the SSAC. Thus, Doctors Lake has been identified as being impaired for nutrients (chlorophyll-a and total phosphorus) (DEP 2016j), and the final TMDL report to address this has been published (Magley 2009e). Elevated maximum arsenic, cadmium, copper, nickel, silver, and zinc concentrations were also 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. Two small creeks that flow from swampland merge and enter the lake from the south and the lake enters the mainstem of the LSJR from the northeast through the Doctors Inlet.

Table 2.10 Water quality data for Doctors Lake.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)08.0215.5416781997 - 2016
Total Nitrogen (mg/L)<1.540.311.213.779541997 - 2015
Total Phosphorus (mg/L)<0.1200.080.4824791996 - 2016
Chlorophyll-a (µg/L)<200.3628.45198.5411061997 - 2016
Arsenic (µg/L)≤5004.5685.65051997 - 2016
Cadmium (µg/L)≤0.300.34.194011997 - 2016
Copper (µg/L)≤9.302.39246.557381997 - 2016
Lead (µg/L)≤3.202.1426.985431997 - 2016
Nickel (µg/L)≤5203.66117.83191997 - 2016
Silver (µg/L)≤0.0700.34.383451997 - 2016
Zinc (µg/L)≤1200.045.38128.17751997 - 2016
Fecal Coliform (log #/100 mL)<2.6No valid data available
Turbidity (NTU)<290.96.414910981997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.
Figure 2.40
Water quality data for Wills Branch are shown in Table 2.31. Average total phosphorus, total nitrogen, dissolved oxygen and chlorophyll-a concentrations were within acceptable limits. The fecal coliform level, averaged over all the stations in Wills Branch, are above the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. As a result, a TMDL for total and fecal coliform was published in 2006 (Wainwright 2006c) for Wills Branch. (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP for Wills Branch was legally adopted in 2010 (DEP 2010a). Annual Progress Reports for this BMAP were published in 2011 (DEP 2011b), 2012 (DEP 2013b), and 2013 (DEP 2013b); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT.

2.7.10. Dunns Creek/Crescent Lake

2.7.10.1. About Dunns Creek/Crescent Lake

Figure 2.40
Figure 2.41 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: Mercury – 2606B, Nutrients – 2606B (draft)
  • Verified Impaired 2016 (final): Fecal Coliform (2606A low), Nutrients (Chlorophyll-a, Total P 2606B med)
  • WBID Area: 585 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.10.2. Data sources

Result data was downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Dunns Creek/Crescent Lake WBIDs 2606A/B (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.11, with freshwater stream WQC’s reported. 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 2.13. This tributary is a significant non point-source contributor to nutrient levels in the St. Johns River (Magley and Joyner 2008). There is a significant variation of dissolved oxygen going upstream of the creek and into the lake as evidenced by the wider spread of values in Figure 2.41.

Dunns Creek (WBID 2606A) was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue, however this is being delisted (DEP 2016h) as it has been addressed by the statewide mercury TMDL (DEP 2013e). In addition, a TMDL for Nutrients was recently drafted (Bubel 2015) for Crescent Lake based on its Trophic State Index (TSI), calculated from the total nitrogen (TN), total phosphorus (TP), and chlorophyll-a levels. Crescent Lake is listed on the revised verified list for chlorophyll-a and total phosphorus (DEP 2016j).

Table 2.11 Water quality data for Dunns Creek/Crescent Lake.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)07.5116.9324751997 - 2016
Total Nitrogen (mg/L)<1.540.531.33.249561997 - 2015
Total Phosphorus (mg/L)<0.1200.070.5128711997 - 2016
Chlorophyll-a (µg/L)<200.1519.89198.1114311997 - 2016
Arsenic (µg/L)≤5001.55.774391997 - 2016
Cadmium (µg/L)≤0.300.071.023861997 - 2016
Copper (µg/L)≤9.301.43392.97161997 - 2016
Lead (µg/L)≤3.200.795.364611997 - 2016
Nickel (µg/L)≤5201.1153.263591997 - 2016
Silver (µg/L)≤0.0700.131.163451997 - 2016
Zinc (µg/L)≤12003.35133.77641997 - 2016
Fecal Coliform (log #/100 mL)<2.6-0.30.653.681241998 - 2013
Turbidity (NTU)<290.655.4735.414291997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.
Figure 2.41
Figure 2.42 Variation of the dissolved oxygen in Dunns Creek and Crescent Lake going upstream (left to right) Note: The data in this graph are not consistent in sampling interval and/or timeframe.

2.7.11. Durbin Creek

2.7.11.1. About Durbin Creek

Figure 2.42
Figure 2.43 The Durbin Creek Tributary (WBID 2365).
  • East of the St. Johns River South of I-295
  • Primary Land Use: Forested
  • Current TMDL reports: Fecal Coliform
  • Verified Impaired 2016 (final): None
  • WBID Area: 26.2 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.11.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Durbin Creek WBID 2365 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.12.

2.7.11.3. Discussion

Water quality data for Durbin Creek are shown in Table 2.12. Average dissolved oxygen levels in Durbin Creek are 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). Currently, a TMDL report is available for fecal coliform in Durbin Creek (Magley 2006a). (Note: the data analyses in the TMDL are based on different criteria than that used in this report).

Table 2.12 Water quality data for Durbin Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)03.939.61581997 - 2016
Total Nitrogen (mg/L)<1.540.281.153.541551997 - 2014
Total Phosphorus (mg/L)<0.120.010.10.622241997 - 2016
Chlorophyll-a (µg/L)<2001.3932.61081997 - 2016
Arsenic (µg/L)≤5000.746.11831997 - 2016
Cadmium (µg/L)≤0.300.121.13831997 - 2016
Copper (µg/L)≤9.300.733.131111997 - 2016
Lead (µg/L)≤3.200.672.44951997 - 2016
Nickel (µg/L)≤5201.5616.2981997 - 2016
Silver (µg/L)≤0.0700.120.72432004 - 2016
Zinc (µg/L)≤12005.8835.071161997 - 2016
Fecal Coliform (log #/100 mL)<2.6-0.31.993.671931999 - 2012
Turbidity (NTU)<290.463.97261711997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.43
Figure 2.44 The Ginhouse Creek Tributary (WBID 2248).
  • South of the St. Johns River just west of Craig Airfield
  • Primary Land Use: Residential
  • Current TMDL reports: None
  • Verified Impaired 2016 (final): None
  • WBID Area: 2.0 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.12.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Ginhouse Creek WBID 2248 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.13.

2.7.12.3. Discussion

Water quality data for Ginhouse Creek are shown in Table 2.13; note, however, that no metals data were available. Average fecal coliform levels are elevated and above the WQC, but Ginhouse Creek has been identified as impaired for fecal coliform.

Table 2.13 Water quality data for Ginhouse Creek.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.345.4411.041611999 - 2014
Total Nitrogen (mg/L)<1.54‡0.491.092.52302005 - 2014
Total Phosphorus (mg/L)<0.12‡0.060.110.62302005 - 2014
Chlorophyll-a (μg/L)<20‡0.319.6794302005 - 2014
Arsenic (μg/L)≤50No valid data available
Cadmium (μg/L)≤0.3No valid data available
Copper (μg/L)≤9.3No valid data available
Lead (μg/L)≤3.2No valid data available
Nickel (μg/L)≤52No valid data available
Silver (μg/L)≤0.07No valid data available
Zinc (μg/L)≤120No valid data available
Fecal Coliform (log #/100 mL)<2.6‡0.72.685.181201999 - 2013
Turbidity (NTU)<290.64.9520432005 - 2014
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.44
Figure 2.45 The Goodbys Creek Tributary (WBID 2326).
  • East of the St. Johns River opposite NAS Jacksonville
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform with BMAP (2009)
  • Verified Impaired 2016 (final): None
  • WBID Area: 5.1 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.13.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Goodbys Creek WBID 2326 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.14.

2.7.13.3. Discussion

Water quality data for Goodbys Creek are shown in Table 2.14. Average phosphorus levels in Goodbys Creek exceeded the recently updated WQC (EPA 2010b); however, average total nitrogen, dissolved oxygen and chlorophyll-a concentrations were within acceptable limits. The fecal coliform level, averaged over all the stations in Goodbys Creek, is below the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units per 100 mL. Analysis by station is shown in Figure 2.46, going from the furthest downstream, within the mainstem of the St. Johns River, to the furthest upstream. The average remains at or above the state maximum until station 20030899 near Old Kings Road.

A TMDL report is available for fecal coliform in Goodbys Creek (Wainwright 2005b). (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP for Goodbys Creek was legally adopted in 2009 (DEP 2009b). Annual Progress Reports for this BMAP were issued in 2011 (DEP 2011a), 2012 (DEP 2012), and 2013 (DEP 2013a); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT.

Table 2.14 Water quality data for Goodbys Creek.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.25.0512.353351999 - 2014
Total Nitrogen (mg/L)<1.54‡0.340.772.06651999 - 2012
Total Phosphorus (mg/L)<0.12‡0.010.052.041081999 - 2012
Chlorophyll-a (μg/L)<20‡0.355.2160602002 - 2012
Arsenic (μg/L)≤501.979.8619.1212004 - 2005
Cadmium (μg/L)≤0.300.182.3372003 - 2005
Copper (μg/L)≤9.30.071.185.22332003 - 2005
Lead (μg/L)≤3.20.010.684.95282003 - 2005
Nickel (μg/L)≤5201.366.47352003 - 2005
Silver (μg/L)≤0.070.040.180.582004 - 2005
Zinc (μg/L)≤1200.243.6416.12452003 - 2005
Fecal Coliform (log #/100 mL)<2.6‡0.652.674.632581999 - 2014
Turbidity (NTU)<2928.0659.4761999 - 2013
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.

 

Figure 2.45
Figure 2.46 Fecal coliform in Goodbys Creek from downstream to upstream. Data are presented as the log of number of fecal coliform bacteria per 100 mL; the maximum, mean, and minimum values at each station are shown.

2.7.14. Greenfield Creek

2.7.14.1. About Greenfield Creek

Figure 2.46
Figure 2.47 Greenfield Creek (WBID 2240A/B).
  • West of the Intracoastal Waterway
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform with BMAP (2010), Mercury
  • Verified Impaired 2016 (final): None
  • WBID Area: 2.9 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.14.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Greenfield Creek WBID 2240A/B (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.15.

2.7.14.3. Discussion

Water quality data for Greenfield Creek are shown in Table 2.15. Average phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k) and average total nitrogen, dissolved oxygen and chlorophyll-a concentrations were within acceptable limits. (Note: the datasets for these parameters are relatively small in comparison to other parts of the basin). Dissolved oxygen had been removed from the verified impaired list (DEP 2016j) in Greenfield Creek. Recently a TMDL report (Wainwright and Hallas 2009a) was released to address fecal coliform.

The BMAP for Greenfield Creek (DEP 2010a) was legally adopted in August 2010. It describes sources of fecal coliform in the watershed, and completed and ongoing activities conducted by state and local agencies that are anticipated to reduce fecal coliform loading in the tributary. 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. The sanitary sewer system serves 84% of households in the watershed. JEA reported only one sanitary sewer overflow in the watershed, which occurred in 2002 and potentially impacted surface waters. WSEA estimates that there are 177 on-site sewage treatment and disposal systems (septic systems) in use. Annual Progress Reports for this BMAP were published in 2011 (DEP 2011b), 2012 (DEP 2013b), and 2013 (DEP 2013b); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT.

Greenfield Creek was verified impaired for mercury (DEP 2016j), but this has been addressed in the statewide mercury TMDL already in place (DEP 2013e).

Table 2.15 Water quality data for Greenfield Creek.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. (~3.0)2.36.0613.711311999 - 2012
Total Nitrogen (mg/L)<1.54‡0.711.333.97212007
Total Phosphorus (mg/L)<0.12‡0.040.11212007
Chlorophyll-a (μg/L)<20‡0.4314.1671212007
Arsenic (μg/L)≤50No valid data available
Cadmium (μg/L)≤0.3No valid data available
Copper (μg/L)≤9.3No valid data available
Lead (μg/L)≤3.2No valid data available
Nickel (μg/L)≤52No valid data available
Silver (μg/L)≤0.07No valid data available
Zinc (μg/L)≤120No valid data available
Fecal Coliform (log #/100 mL)<2.6‡0.62.334.021051999 - 2012
Turbidity (NTU)<290.8510.4645212007
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.47
Figure 2.48 The Hogan Creek Tributary (WBID 2252).
  • Downtown Jacksonville
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform with BMAP (2009)
  • Verified Impaired 2016 (final): None
  • WBID Area: 3.4 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.15.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Hogan Creek WBID 2252 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.16.

2.7.15.3. Discussion

Water quality data for Hogan Creek are shown in Table 2.16. Average phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k). Average total nitrogen and chlorophyll-a concentrations were within acceptable limits. (Note: the datasets for these parameters are relatively small in comparison to other parts of the basin). As the average level of dissolved oxygen is below the WQC, Hogan Creek has been identified as being impaired for this parameter.

The fecal coliform level, averaged over all the stations in Hogan Creek, is just below the reference level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. However, a TMDL for fecal coliform in Hogan Creek was finalized in 2006 (Wainwright 2006d). (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP for Hogan Creek was legally adopted in December 2009 (DEP 2009b). Annual Progress Reports for this BMAP were issued in 2011 (DEP 2011a), 2012 (DEP 2012), and 2013 (DEP 2013a); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT.

Table 2.16 Water quality data for Hogan Creek.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.44.7110.62401999 - 2012
Total Nitrogen (mg/L)<1.54‡0.671.021.392000 - 2007
Total Phosphorus (mg/L)<0.12‡0.070.120.1992000 - 2007
Chlorophyll-a (μg/L)<20‡0.613.552662000 - 2007
Arsenic (μg/L)≤500.561.12.152007
Cadmium (μg/L)≤0.30.036.012562001 - 2007
Copper (μg/L)≤9.31.45.0411.662001 - 2007
Lead (μg/L)≤3.21.56.162362001 - 2007
Nickel (μg/L)≤520.530.98262001 - 2007
Silver (μg/L)≤0.070.010.140.7562001 - 2007
Zinc (μg/L)≤1207.714.92862001 - 2007
Fecal Coliform (log #/100 mL)<2.6‡-0.33.115.22301999 - 2012
Turbidity (NTU)<293.97.1318232000 - 2007
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.48
Figure 2.49 The Intracoastal Waterway Tributary (WBID 2205C).
  • Near the mouth of the St. Johns River
  • Primary Land Use: Marsh/Wetland (Land Cover)
  • Current TMDL reports: Mercury
  • Verified Impaired 2016 (final): Fecal Coliform (low), Iron (med)
  • WBID Area: 23.9 sq. mi.
  • Beneficial Use: Class III M (Recreational – Marine)

2.7.16.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Intracoastal Waterway (ICW) WBID 2205C (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.14.

2.7.16.3. Discussion

Water quality data for the ICW are shown in Table 2.17. All parameters listed are within normal limits except for slightly elevated copper, phosphorus and chlorophyll-a. Based on this data the ICW is relatively healthy and does not 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 2013e). The Intracoastal Waterway was also identified as being impaired for fecal coliform and for iron (DEP 2016j).

Table 2.17 Water quality data for the Intracoastal Waterway.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)?4.03.56.3911.052212002 - 2015
Total Nitrogen (mg/L)<1.540.10.784.48782007 - 2012
Total Phosphorus (mg/L)<0.120.020.10.281212000 - 2012
Chlorophyll-a (µg/L)<110.434.5323852007 - 2015
Arsenic (µg/L)≤501.266.7413.75242007 - 2015
Cadmium (µg/L)≤8.800.080.39372007 - 2015
Copper (µg/L)≤3.702.498242007 - 2015
Lead (µg/L)≤8.500.563.62332007 - 2015
Nickel (µg/L)≤8.300.461.25372007 - 2015
Silver (µg/L)≤0.92*00.090.76372007 - 2015
Zinc (µg/L)≤861.517.669332007 - 2015
Fecal Coliform (log #/100 mL)<2.60.482.414.59791999 - 2012
Turbidity (NTU)<291.88.361.11822007 - 2015
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.49
Figure 2.50 The Julington Creek Tributary (WBID 2351).
  • 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
  • Verified Impaired 2016 (final): Iron (med)
  • WBID Area: 20.4 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.17.2. Data sources

Result data was downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Julington Creek WBID 2351 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.18.

2.7.17.3. Discussion

Water quality data for Julington Creek are shown in Table 2.18. The fecal coliform level, averaged over all the stations in Julington Creek, is above the reference level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. Thus, a TMDL for fecal coliform was published in 2009 (Rhew 2009c). (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Julington Creek is also an area in which relatively high ammonia levels have been measured. Julington Creek was identified as being impaired for iron (DEP 2016j).

Table 2.18 Water quality data for Julington Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.55.711.961741999 - 2016
Total Nitrogen (mg/L)<1.540.491.092.22751999 - 2012
Total Phosphorus (mg/L)<0.1200.070.211231999 - 2012
Chlorophyll-a (µg/L)<200.11.25.59382002 - 2012
Arsenic (µg/L)≤500.041.092.8242004 - 2009
Cadmium (µg/L)≤0.300.111.2402004 - 2009
Copper (µg/L)≤9.30.172.5710.53562004 - 2009
Lead (µg/L)≤3.201.0214352004 - 2008
Nickel (µg/L)≤5200.577482004 - 2009
Silver (µg/L)≤0.0700.150.36182004 - 2009
Zinc (µg/L)≤1200.15.3321.48592004 - 2009
Fecal Coliform (log #/100 mL)<2.612.673.78941999 - 2016
Turbidity (NTU)<290.67.0524.4651999 - 2012
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.50
Figure 2.51 The McCoy Creek Tributary (WBID 2257).
  • West of the St. Johns River Downtown
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform
  • Verified Impaired 2016 (final): None
  • WBID Area: 5.34 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.18.2. Data sources

Result data was downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in McCoy Creek WBID 2257 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.19.

2.7.18.3. Discussion

Water quality data for McCoy Creek are shown in Table 2.19. The fecal coliform level, averaged over all the stations in McCoy Creek, is above the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. Thus, a TMDL for fecal coliform was published in 2009 (Rich-Zeisler and Kingon 2009). (Note: the data analysis in the TMDL is based on different criteria than that used in this report). Subsequently, a BMAP for McCoy Creek was legally adopted in 2010 (DEP 2010a). Annual Progress Reports for this BMAP were published in 2011 (DEP 2011b), 2012 (DEP 2013b), and 2013 (DEP 2013b); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT.

Average dissolved oxygen (DO) levels are below the WQC but are above the SSAC of 4.0 mg/L for DO in the mainstem and tributaries (DEP 2014c).

Table 2.19 Water quality data for McCoy Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.75.1891.43022000 - 2016
Total Nitrogen (mg/L)<1.540.190.871.61612000 - 2013
Total Phosphorus (mg/L)<0.120.040.170.42842000 - 2013
Chlorophyll-a (µg/L)<200.282.6121222000 - 2013
Arsenic (µg/L)≤500.0022.968.38282000 - 2008
Cadmium (µg/L)≤0.30.0021.5925702000 - 2008
Copper (µg/L)≤9.30.023.9650792000 - 2008
Lead (µg/L)≤3.207.7450872000 - 2008
Nickel (µg/L)≤5204.1550792000 - 2008
Silver (µg/L)≤0.0700.45282000 - 2008
Zinc (µg/L)≤1200.0420.15317.62822000 - 2008
Fecal Coliform (log #/100 mL)<2.603.424.92502000 - 2016
Turbidity (NTU)<291.48.0471.22452000 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.51
Figure 2.52 The Mill Creek Tributary (WBID 2460).
  • East of the St. Johns River feeding into Sixmile Creek
  • Primary Land Use: Wetlands/forest
  • Current TMDL reports: Fecal Coliform, DO/Nutrient
  • Verified Impaired 2016 (final): Iron (high)
  • WBID Area: 11.6 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.19.2. Data sources

Result data was downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Mill Creek WBID2460 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.20.

2.7.19.3. Discussion

Water quality data for Mill Creek are shown in Table 2.20. The fecal coliform level, averaged over all the stations in Mill Creek, is above the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. Thus, a TMDL for fecal coliform was published in 2009 (Rhew 2009b). (Note: the data analyses in the TMDL are based on different criteria than that used in this report). In addition, Mill Creek has been identified as impaired for dissolved oxygen and associate nutrients and a TMDL addressing this was published in 2010 (Magley 2010). Iron has been added in the recent revised verified impaired list (DEP 2016j) for Mill Creek and is potentially a natural condition, common in Florida blackwater streams such as this.

Table 2.20 Water quality data for Mill Creek.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. (~3.0)2.385.429.561152002 - 2013
Total Nitrogen (mg/L)<1.54‡0.211.113.03862002 - 2013
Total Phosphorus (mg/L)<0.12‡0.030.140.771392002 - 2013
Chlorophyll-a (μg/L)<20‡07.2750672002 - 2013
Arsenic (μg/L)≤500.031.684.64582005 - 2009
Cadmium (μg/L)≤0.300.050.19562005 - 2009
Copper (μg/L)≤9.30.552.357.51742005 - 2009
Lead (μg/L)≤3.20.10.581.52492005 - 2009
Nickel (μg/L)≤520.090.63.74442005 - 2008
Silver (μg/L)≤0.0700.080.4482006 - 2009
Zinc (μg/L)≤1200.874.4732.2732005 - 2009
Fecal Coliform (log #/100 mL)<2.6‡1.32.283.9452002 - 2008
Turbidity (NTU)<291.98.73130662002 - 2012
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.52
Figure 2.53 The Moncrief Creek Tributary (WBID 2228).
  • North of downtown Jacksonville
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal/Total Coliform with BMAP (2010), Mercury
  • Verified Impaired 2016 (final): Copper (2228A med), Iron (2228A med), Nutrients (Chlorophyll-a 228A med)
  • WBID Area: 5.9 sq. mi.
  • Beneficial Use: Class III F (Recreational – Marine)

2.7.20.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Moncrief Creek WBID 2228 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.21.

2.7.20.3. Discussion

Water quality data for Moncrief Creek are shown in Table 2.21. Average phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k). Average total nitrogen and dissolved oxygen concentrations were within acceptable limits, and chlorophyll-a concentrations were only slightly elevated. Average copper concentrations were elevated relative to other tributaries and some concentrations were well above WQC.

The fecal coliform level, averaged over all the stations in Moncrief Creek, is below the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. However, there is some variation in the levels depending on the location. Analysis by station is shown in Figure 2.54, going from downstream to upstream. The furthest downstream station at which fecal coliform data are available is station 20030114, near the intersection of I-95 and Norwood Avenue, and the furthest upstream station is station 20030897, near Kings Road. Beginning at station TR316 the average level exceeds the state maximum at every station. This is an old neighborhood that has been populated for many decades and contains both residential and light industrial development. South of the Martin Luther King Jr. Parkway, the average level is lower than the state maximum.

A TMDL report for fecal coliform was published for Moncrief Creek in 2006 (Wainwright 2006b). (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP for Moncrief Creek (DEP 2010a) was released in August 2010. It describes sources of fecal coliform in the watershed, and completed and ongoing activities conducted by state and local agencies that are anticipated to reduce fecal coliform loading in the tributary. The Moncrief Creek watershed contains four permitted point sources for industrial wastewater, as well as numerous outfalls for stormwater discharge. A sewer system serves 90% of households in the watershed. WSEA estimates that there are 989 on-site sewage treatment and disposal systems (septic systems) in use. JEA has been conducting two large projects to replace or rehabilitate failing or leaking infrastructure in this watershed. COJ has constructed two wet detention projects and has worked with WSEA to add new sewer lines in order to eliminate 210 septic systems. Annual Progress Reports for this BMAP have been published annually since 2011, listing repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT. In the 2016 Annual Progress Report, 59% of Moncrief Creek fecal coliform measurements over a 7.5 year period ending June 30, 2016 exceeded the water quality criterion (400 CFU/100 mL) (DEP 2017a). 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).  There are 28 projects either planned or currently underway by COJ, JEA, and FDOT to address the BMAP in the Moncrief Creek watershed (DEP 2017a).

Moncrief Creek has been identified as impaired for copper and iron (DEP 2014g), but it has been delisted for lead (DEP 2016h). It was identified as being impaired for mercury, based on elevated levels of mercury in fish tissue; however, this is being delisted (DEP 2015b) as it has been addressed by the statewide mercury TMDL (DEP 2013e).

Table 2.21 Water quality data for Moncrief Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.415.6811.43531998 - 2016
Total Nitrogen (mg/L)<1.540.080.975.761171998 - 2014
Total Phosphorus (mg/L)<0.1200.170.681141998 - 2015
Chlorophyll-a (µg/L)<200.512.28140.3881998 - 2015
Arsenic (µg/L)≤500.488.56124831998 - 2015
Cadmium (µg/L)≤0.300.6110.6641998 - 2015
Copper (µg/L)≤9.30.824.99401041998 - 2016
Lead (µg/L)≤3.20.234.3633.91841998 - 2015
Nickel (µg/L)≤520.043.8440771998 - 2015
Silver (µg/L)≤0.0700.331.81262001 - 2015
Zinc (µg/L)≤1200.0413.2753.061421998 - 2014
Fecal Coliform (log #/100 mL)<2.60.653.474.982602000 - 2016
Turbidity (NTU)<2908.939.91961998 - 2014
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.

 

Figure 2.53
Figure 2.54 Fecal coliform in Moncrief Creek from downstream to upstream. Data are presented as the log of the number of fecal coliform bacteria per 100 mL; the maximum, mean, and minimum values at each station are shown.

2.7.21. Open Creek

2.7.21.1. About Open Creek

Figure 2.54
Figure 2.55 Open Creek (WBID 2299A/B).
  • West of the Intracoastal Waterway
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform with BMAP (2009), Mercury
  • Verified Impaired 2016 (final): None
  • WBID Area: 6.5 sq. mi.
  • Beneficial Use: Class III M & F (Marine – 2299A, Freshwater – 299B)

2.7.21.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Open Creek WBID 2299A/B (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.22.

2.7.21.3. Discussion

Water quality data for Open Creek are shown in Table 2.22. Average nutrient levels (total nitrogen, total phosphorus, and dissolved oxygen) and turbidity were in the normal range. (Note: the datasets for these parameters are relatively small in comparison to other parts of the basin).

The fecal coliform level, averaged over all the stations in Open Creek, is elevated but below the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. However, there is some variation in the levels dependent on the location. Figure 2.56 shows fecal coliform levels at various stations on Open Creek. All are above the water quality criterion except 20030848, which is near the intersection of Hodges Boulevard and Danforth Road.

A TMDL report (Wainwright and Hallas 2009b) was released in 2009 to address fecal coliform. (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). Annual Progress Reports for this BMAP were issued in 2010 (DEP 2011a), 2011 (DEP 2012), and 2012 (DEP 2013a); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT.

Open Creek has been identified as impaired for mercury (DEP 2016j) and is addressed in the statewide mercury TMDL already in place (DEP 2013e).

Table 2.22 Water quality data for Open Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. FW ?4.0 SW0.85.55121772002 - 2016
Total Nitrogen (mg/L)<1.540.430.831.78352007 - 2012
Total Phosphorus (mg/L)<0.120.010.040.28352007 - 2012
Chlorophyll-a (µg/L)<20 FW <11 SW0.283.1711352007 - 2012
Arsenic (µg/L)≤50 FW ≤50 SWNo valid data available
Cadmium (µg/L)≤0.3 FW ≤8.8 SWNo valid data available
Copper (µg/L)≤9.3 FW ≤3.7 SWNo valid data available
Lead (µg/L)≤3.2 FW ≤8.5 SWNo valid data available
Nickel (µg/L)≤52 FW ≤8.3 SWNo valid data available
Silver (µg/L)≤0.07 FW ≤0.92* SWNo valid data available
Zinc (µg/L)≤120 FW ≤86 SWNo valid data available
Fecal Coliform (log #/100 mL)<2.60.33.134.111622002 - 2016
Turbidity (NTU)<291.54.8312.3472007 - 2013
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.

 

Figure 2.55
Figure 2.56 Fecal coliform in Open Creek from downstream to upstream. Data are presented as the log of the number of fecal coliform bacteria per 100 mL; the maximum, mean, and minimum values at each station are shown.

 

2.7.22. Ortega River

2.7.22.1. About the Ortega River

Figure 2.56
Figure 2.57 The Ortega River Tributary (WBID 2213P1 and 2249A).
  • West of NAS Jacksonville
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform – 2213P1 DO/Nutrient   2213P1 (draft)
  • Verified Impaired 2016 (final): None
  • WBID Area: 29.0 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.22.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Ortega River WBID 2213P1 and 2249A (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.23.

2.7.22.3. Discussion

Water quality data for the Ortega River are shown in Table 2.23. Average total nitrogen, total phosphorus, dissolved oxygen and chlorophyll-a concentrations were within acceptable limits. The fecal coliform level, averaged over all the sampling sites in the Ortega River, is below the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units per 100 mL. The average at each individual sampling site also falls below the critical level. However, this analysis brings together data from both WBIDs and if the data is separated by WBID, WBID 2213P1 (downstream) has a significantly higher fecal coliform level than WBID 2249A. The TMDL reports for fecal coliform (Rhew 2009e) 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.

Table 2.23 Water quality data for the Ortega River.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.254.2711.62121998 - 2016
Total Nitrogen (mg/L)<1.540.160.852.471701998 - 2014
Total Phosphorus (mg/L)<0.120.020.090.842061998 - 2016
Chlorophyll-a (µg/L)<2002.09641121998 - 2016
Arsenic (µg/L)≤5002.5646.8741998 - 2016
Cadmium (µg/L)≤0.300.162.5631998 - 2016
Copper (µg/L)≤9.301.6116.78991998 - 2016
Lead (µg/L)≤3.20.0916.74751998 - 2016
Nickel (µg/L)≤5201.3620.8821998 - 2016
Silver (µg/L)≤0.0700.151.24322004 - 2016
Zinc (µg/L)≤1201.558.0331.23991998 - 2016
Fecal Coliform (log #/100 mL)<2.6-0.32.124.042951999 - 2013
Turbidity (NTU)<290.433.5641221998 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.57
Figure 2.58 The Peters Creek Tributary (WBID 2444).
  • Flows into Black Creek
  • Primary Land Use: Forest/agriculture
  • Current TMDL reports: Lead, Fecal Coliform
  • Verified Impaired 2016 (final):None
  • WBID Area: 20.5 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.23.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in Peters Creek WBID 2444 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.24.

2.7.23.3. Discussion

Water quality data for Peters Creek are shown in Table 2.24. Average total nitrogen, total phosphorus, dissolved oxygen and chlorophyll-a concentrations were within acceptable limits. The fecal coliform level, averaged over all the sampling sites in the Peters Creek, is above the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units per 100 mL. As a consequence a TMDL report was published in 2009 to address this impairment (Rhew 2009a). In addition, even though the mean concentration of lead is significantly lower than the freshwater water quality criteria, lead has been identified as impaired (high percentage of exceedances) in Peters Creek and a TMDL report was published in 2009 (Lewis and Mandrup-Poulsen 2009) to address this issue.

Table 2.24 Water quality data for Peters Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.285.212.315101997 - 2016
Total Nitrogen (mg/L)<1.540.10.671.434831997 - 2011
Total Phosphorus (mg/L)<0.1200.080.327661997 - 2016
Chlorophyll-a (mg/L)<2003.3127.682431997 - 2016
Arsenic (mg/L)≤5001.266.771881997 - 2011
Cadmium (mg/L)≤0.300.111.652871997 - 2010
Copper (mg/L)≤9.301112.024131997 - 2011
Lead (µg/L)≤3.200.724.133781997 - 2011
Nickel (mg/L)≤5201.1320.72481997 - 2011
Silver≤0.0700.131.31611997 - 2010
Zinc (mg/L)≤1200.294.531.374621997 - 2011
Fecal Coliform (log #/100 mL)<2.61.382.633.38282004 - 2007
Turbidity (NTU)<290.52.98955171997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.58
Figure 2.59 The Pottsburg Creek Tributary (WBID 2265B).
  • East of the St. Johns River at the Butler Blvd./I-95 interchange
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal coliform with BMAP (2010)
  • Verified Impaired 2016 (final): Iron (med)
  • WBID Area: 9.1 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.24.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Pottsburg Creek WBID 2265B (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.25.

2.7.24.3. Discussion

Water quality data for Pottsburg Creek are shown in Table 2.25. Average phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k); however, average dissolved oxygen and chlorophyll-a were within limits. Fecal coliform data in Table 2.21 (1999-2012) indicates that the average is 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 2009c).

A BMAP for Pottsburg Creek (DEP 2010a) was legally adopted in August 2010. It describes sources of fecal coliform in the watershed, and completed and ongoing activities conducted by state and local agencies that are anticipated to reduce fecal coliform loading in the tributary. The Pottsburg Creek watershed contains one permitted point source for industrial wastewater, as well as numerous outfalls for stormwater discharge. A sewer system serves 33% of households in the watershed. WSEA estimates that there are 1,585 on-site sewage treatment and disposal systems (septic systems) in use. COJ has constructed three wet detention projects and has worked with WSEA to add new sewer lines in order to eliminate 354 septic systems. Annual Progress Reports for this BMAP have been published annually since 2011, listing repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT. In the 2016 Annual Progress Report, 34% of Pottsburg Creek fecal coliform measurements over a 7.5 year period ending June 30, 2016 exceeded the water quality criterion (400 CFU/100 mL) (DEP 2017a). 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). There are 24 projects either planned or currently underway by COJ, JEA, and FDOT to address the BMAP in the Pottsburg Creek watershed (DEP 2017a).

Table 2.25 Water quality data for Pottsburg Creek.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.345.3810.531961999 - 2013
Total Nitrogen (mg/L)<1.54‡0.340.941.83881999 - 2013
Total Phosphorus (mg/L)<0.12‡00.140.431011999 - 2013
Chlorophyll-a (μg/L)<20‡0.436.4339502002 - 2013
Arsenic (μg/L)≤500.731.653.3262005 - 2007
Cadmium (μg/L)≤0.30.012.1651.3552002 - 2007
Copper (μg/L)≤9.30.023.7350702002 - 2007
Lead (μg/L)≤3.206.3250672002 - 2007
Nickel (μg/L)≤5204.5250702002 - 2007
Silver (μg/L)≤0.070.010.030.04222007
Zinc (μg/L)≤1200.047.1650702002 - 2007
Fecal Coliform (log #/100 mL)<2.6‡12.485.21961999 - 2012
Turbidity (NTU)<290.17.3372821999 - 2013
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.59
Figure 2.60 The Ribault River Tributary (WBID 2224).
  • Northwest of downtown Jacksonville
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform
  • Verified Impaired 2016 (final): Iron (med)
  • WBID Area: 9.7 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.25.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Ribault River WBID 2224 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.26.

2.7.25.3. Discussion

Water quality data for the Ribault River are shown in Table 2.26. The Ribault River is located in a highly residential area and consequently is a contributor to elevated levels of phosphorus found in the tributary. High levels of chlorophyll-a have also been measured, but Ribault River has not been designated impaired (DEP 2016h). Iron has been added to the verified impaired list (DEP 2016j).

The fecal coliform level, averaged over all the sampling sites in the Ribault River, is elevated but below the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units per 100 mL. However, a TMDL report for fecal coliform in the Ribault River was published in 2006 (Wainwright 2006a), and a BMAP is under development. Note: the data analyses in the TMDL are based on different criteria than that used in this report).

Table 2.26 Water quality data for the Ribault River.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.355.5212.831961999 - 2012
Total Nitrogen (mg/L)<1.540.791.251.89292001 - 2007
Total Phosphorus (mg/L)<0.120.080.250.41282005 - 2007
Chlorophyll-a (µg/L)<200.4327.7150282005 - 2007
Arsenic (µg/L)≤500.751.743232006 - 2007
Cadmium (µg/L)≤0.30.010.070.25232006 - 2007
Copper (µg/L)≤9.312.566.4232006 - 2007
Lead (µg/L)≤3.20.161.864.2332004 - 2007
Nickel (µg/L)≤520.51.222.6232006 - 2007
Silver (µg/L)≤0.070.010.040.13232006 - 2007
Zinc (µg/L)≤1207.514.1139232006 - 2007
Fecal Coliform (log #/100 mL)<2.6-0.32.274.451451999 - 2012
Turbidity (NTU)<292.579.8731292001 - 2007
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.61
Figure 2.62 The Sixmile Creek Tributary (WBID 2411).
  • East of the St. Johns River in St. Johns County
  • Primary Land Use: Forested/Wetland
  • Current TMDL reports: None
  • Verified Impaired 2016 (final): None
  • WBID Area: 59.5 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.27.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Sixmile Creek WBID 2411 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.28.

2.7.27.3. Discussion

Water quality data for Sixmile Creek are shown in Table 2.28. Dissolved oxygen levels in Sixmile Creek are relatively low, compared to other tributaries (Figure 2.41); however, this is likely attributed to the wetland areas surrounding the creek and therefore it is not listed as impaired (DEP 2009c). Chlorophyll-a levels have exceeded WQC in the past but recent data have shown levels are decreasing, and now the average is below the water quality criteria (20 µg/L) for freshwater streams. Silver levels are elevated, yet this has not been identified as an impairment.

Table 2.28 Water quality data for the Sixmile Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.585.2610.822771997 - 2015
Total Nitrogen (mg/L)<1.540.521.041.861721997 - 2014
Total Phosphorus (mg/L)<0.120.0090.090.673551997 - 2014
Chlorophyll-a (µg/L)<200.0511.493.452191997 - 2015
Arsenic (µg/L)≤500.092.5822.111091997 - 2011
Cadmium (µg/L)≤0.300.193.741101997 - 2011
Copper (µg/L)≤9.30.072.85170.41561997 - 2011
Lead (µg/L)≤3.2018.021261997 - 2011
Nickel (µg/L)≤5203.498.71251997 - 2011
Silver (µg/L)≤0.0700.293.41951997 - 2011
Zinc (µg/L)≤1200.274.8332.721621997 - 2011
Fecal Coliform (log #/100 mL)<2.62.182.182.1812012
Turbidity (NTU)<290.52.6833.52101997 - 2015
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.

2.7.26. Rice Creek

2.7.26.1. About the Rice Creek

Figure 2.60
Figure 2.61 The Rice Creek Tributary (WBID 2567A/B).
  • West of Palatka
  • Primary Land Use: Forested/Wetland
  • Current TMDL reports: None
  • Verified Impaired 2016 (final): None
  • WBID Area: 31.1 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.26.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Rice Creek WBID 2567A/B (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.27.

2.7.26.3. Discussion

Water quality data for Rice Creek are shown in Table 2.27. Rice Creek is predominantly surrounded by wetlands, forests including The Rice Creek Wildlife Management Area and a pulp mill (Georgia-Pacific). Dissolved oxygen and total nitrogen levels were below their WQC. Total phosphorus, chlorophyll-a, and turbidity levels previously indicated as elevated are now within normal levels. Rice Creek has been identified as being impaired for Dioxin (DEP 2014g), and Georgia Pacific has instituted measures to reduce levels in its effluent. A reevaluation of the levels of Dioxin currently in Rice Creek is needed

Table 2.27 Water quality data for the Rice Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.365.811.428401997 - 2016
Total Nitrogen (mg/L)<1.540.21.25.773031997 - 2015
Total Phosphorus (mg/L)<0.1200.10.565541997 - 2016
Chlorophyll-a (µg/L)<2006.7970.43811997 - 2016
Arsenic (µg/L)≤5001.36222001997 - 2016
Cadmium (µg/L)≤0.300.121.091871997 - 2016
Copper (µg/L)≤9.301.419.862571997 - 2016
Lead (µg/L)≤3.200.9711.262161997 - 2016
Nickel (µg/L)≤5204.2221.32401997 - 2016
Silver (µg/L)≤0.0700.091.761331997 - 2016
Zinc (µg/L)≤12007.536.912511997 - 2016
Fecal Coliform (log #/100 mL)<2.61.152.033.361392002 - 2014
Turbidity (NTU)<2907.744003961997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.62
Figure 2.63 The Strawberry Creek Tributary (WBID 2239).
  • Flows into the Arlington River
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal Coliform
  • Verified Impaired 2016 (final): None
  • WBID Area: 4.6 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.28.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Strawberry Creek WBID 2239 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.29.

2.7.28.3. Discussion

Water quality data for the Strawberry Creek are shown in Table 2.29. Even though Strawberry Creek is located in a highly residential area, levels of nutrients (nitrogen and phosphorus) and dissolved oxygen are at normal levels. This indicates that runoff from residential fertilization is not an issue at this time. The fecal coliform level, averaged over all the sampling sites in Strawberry Creek, is above the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units per 100 mL. Thus, a TMDL report for fecal coliform in Strawberry Creek was published in 2009 (Rhew 2009d). (Note: the data analyses in the TMDL are based on different criteria than that used in this report).

Table 2.29 Water quality data for the Strawberry Creek.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. (~3.0)05.5820.865981997 - 2016
Total Nitrogen (mg/L)<1.540.271.4617.864161997 - 2015
Total Phosphorus (mg/L)<0.1200.312.299801997 - 2016
Chlorophyll-a (µg/L)<2009.15193.43581997 - 2016
Arsenic (µg/L)≤5002.217.043021997 - 2016
Cadmium (µg/L)≤0.300.111.282921997 - 2016
Copper (µg/L)≤9.301.8314.784121997 - 2016
Lead (µg/L)≤3.200.627.792011997 - 2016
Nickel (µg/L)≤5201.7834.82731997 - 2016
Silver (µg/L)≤0.0700.191.653101997 - 2016
Zinc (µg/L)≤1200.316.849.684031997 - 2016
Fecal Coliform (log #/100 mL)<2.61.882.52.7742002 - 2009
Turbidity (NTU)<290.237.281465441997 - 2016
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.63
Figure 2.64 The Trout River Tributary (WBIDs 2203/2203A/2223).
  • North of downtown Jacksonville
  • Primary Land Use: Residential/Wetland Current TMDL reports: Fecal coliform with BMAP (2010) DO/Nutrients (2203B), Mercury (2203A)
  • Verified Impaired 2016 (final): Chlorophyll-a (2203A, med)
  • Beneficial Use: Class III M/F (Marine 2203A, Freshwater 2203/2233)

2.7.29.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Trout River WBIDs 2203/2203A/2223 (DEP 2014d) shown above. The filtered dataset was used to Table 2.30.

2.7.29.3. Discussion

Water quality data for the Trout River are shown in Table 2.30. Overall (all WBIDs) average phosphorus levels were higher than the recently updated WQC (DEP 2015d; DEP 2016e; DEP 2016k), and average total nitrogen and dissolved oxygen concentrations were within acceptable limits. However, 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). The Trout River has been listed as impaired for chlorophyll-a (DEP 2016j).

The fecal coliform level, averaged over all the stations in the Trout River (Table 2.30), is below the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. However, a TMDL for fecal coliform was published in 2009 (Wainwright and Hallas 2009c) for WBIDs 2203 and 2203A in the Trout River. (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP for the Trout River (DEP 2010a) was legally adopted in August 2010. It describes sources of fecal coliform in the watershed, and completed and ongoing activities conducted by state and local agencies that are anticipated to reduce fecal coliform loading in the tributary. The BMAP describes two WBIDS: the upper Trout River (2203), and the lower Trout River (2203A). The upper Trout River watershed contains one permitted point source for industrial wastewater, and the lower Trout River contains two of those; both have numerous outfalls for stormwater discharge. The sewer system serves 100% of households in the upper Trout River watershed, and 73% in the lower Trout River watershed. WSEA estimates that there are 819 on-site sewage treatment and disposal systems (septic systems) in use in the upper Trout River, and 2,964 in the lower Trout River. COJ has completed two flood control projects in the lower Trout River watershed. Annual Progress Reports for this BMAP have been published annually since 2011, listing repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT. 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 2017a). 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). There are 42 projects either planned or currently underway by COJ, JEA, and FDOT to address the BMAP in the Trout River watershed (DEP 2017a).

The Trout River (lower reach) was identified as being impaired for mercury based on elevated levels of mercury in fish tissue; however, this is being delisted (DEP 2016h), as it has been addressed by the statewide mercury TMDL (DEP 2013e). Chlorophyll-a has been added to the verified impaired list (DEP 2016j).

Table 2.30 Water quality data for the Trout River.
Water QualityConcentrationSampling
ParameterCriteria (FW)LowAverageHighSamplesPeriod
Dissolved Oxygen (mg/L)34% sat. FW ?4.0 SW0.55.2610.833691997 - 2016
Total Nitrogen (mg/L)<1.540.321.243.351311997 - 2014
Total Phosphorus (mg/L)<0.120.030.170.861461997 - 2014
Chlorophyll-a (µg/L)<20 FW <11 SW0.28552961997 - 2014
Arsenic (µg/L)≤50 FW ≤50 SW0.251.623.1522006 - 2007
Cadmium (µg/L)≤0.3 FW ≤8.8 SW0.012.8215882000 - 2007
Copper (µg/L)≤9.3 FW ≤3.7 SW0.02350932000 - 2007
Lead (µg/L)≤3.2 FW ≤8.5 SW04.3750892000 - 2008
Nickel (µg/L)≤52 FW ≤8.3 SW02.5350932000 - 2007
Silver (µg/L)≤0.07 FW ≤0.92* SW0.010.245562000 - 2007
Zinc (µg/L)≤120 FW ≤86 SW0.047.5750952000 - 2007
Fecal Coliform (log #/100 mL)<2.6-0.32.914.663022000 - 2016
Turbidity (NTU)<2907.15391551997 - 2014
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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 2.64
Figure 2.65 The Wills Branch Tributary (WBIDs 2282).
  • West of downtown Jacksonville Flows into the Cedar River
  • Primary Land Use: Residential
  • Current TMDL reports: Fecal and Total Coliform with BMAP (2010)
  • Verified Impaired 2016 (final): None
  • Beneficial Use: Class III  F (Recreational – Freshwater)

2.7.30.2. Data sources

Result data were downloaded from the FL STORET website (DEP 2010e) and filtered based on the stations (DEP 2010f) in the Wills Branch WBID 2282 (DEP 2014d) shown above. The filtered dataset was used to generate Table 2.31.

2.7.30.3. Discussion

Water quality data for Wills Branch are shown in Table 2.31. Average total phosphorus, total nitrogen, dissolved oxygen and chlorophyll-a concentrations were within acceptable limits. The fecal coliform level, averaged over all the stations in Wills Branch, are above the critical level of 2.6, which is the logarithm of the state maximum of 400 colony-forming-units (cfu) per 100 mL. As a result, a TMDL for total and fecal coliform was published in 2006 (Wainwright 2006c) for Wills Branch. (Note: the data analyses in the TMDL are based on different criteria than that used in this report). Subsequently, a BMAP for Wills Branch was legally adopted in 2010 (DEP 2010a). Annual Progress Reports for this BMAP were published in 2011 (DEP 2011b), 2012 (DEP 2013b), and 2013 (DEP 2013b); they list repairs, inspections, evaluations, and other improvements conducted by JEA, the Duval County Health Department, COJ, and FDOT.

Table 2.31 Water quality data for Wills Branch.
Concentration
ParameterWater Quality Criteria (SW)LowAverageHighSamplesSampling Period
Dissolved Oxygen (mg/L)34% sat. (~3.0)0.226.6713.282351999 - 2013
Total Nitrogen (mg/L)<1.54‡0.340.992.91742001 - 2013
Total Phosphorus (mg/L)<0.12‡0.020.070.7992002 - 2013
Chlorophyll-a (μg/L)<20‡0.12.831472002 - 2013
Arsenic (μg/L)≤500.250.752.55302005 - 2008
Cadmium (μg/L)≤0.30.0021.7190642002 - 2008
Copper (μg/L)≤9.30.022.5250872002 - 2008
Lead (μg/L)≤3.205.2250792002 - 2008
Nickel (μg/L)≤5203.3550742002 - 2008
Silver (μg/L)≤0.070.0050.0130.039302005 - 2008
Zinc (μg/L)≤1200.046.8750802002 - 2008
Fecal Coliform (log #/100 mL)<2.6‡0.542.674.71981999 - 2012
Turbidity (NTU)<2904.0118922001 - 2013
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.