2.7.2. Arlington River

2.7.2.1.  About the Arlington River

Figure 2.24
Figure 2.29 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 and WIN websites (DEP 2010f; DEP 2018h) and filtered based on the stations (DEP 2010g) in the Arlington River WBID 2265A (DEP 2014c) shown above. No water quality data for the selected parameters discussed below for the Arlington River were available in STORET for 2016-2017.  The filtered dataset was used to generate Table 2.3.

2.7.2.3. Discussion

Water quality data for the Arlington River are presented in Table 2.3. Average phosphorus levels were higher than the recently updated WQC (DEP 2015c; 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 2013c). The Arlington River is being delisted for chlorophyll-a as it has been addressed by the Nutrients TMDL (DEP 2016h).

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

Table 2.3 Water quality data for Arlington River.

 Water QualityAverage and Number of Samples º
ParameterCriteria (SW)201620172018
Dissolved Oxygen (mg/L)≥4.0Not availableNot available7.07
(0 of 13 samples)
Total Nitrogen (mg/L)<1.54Not availableNot available1.07
(0 of 10 samples)
Total Phosphorus (mg/L)<0.12Not availableNot available0.11
(1 of 10 samples)
Chlorophyll-a (µg/L)<5.4Not availableNot available6.93
(6 of 10 samples)
Arsenic (µg/L)≥50Not availableNot available1.65
(0 of 10 samples)
Cadmium (µg/L)≥8.8Not availableNot available0.02
(0 of 10 samples)
Copper (µg/L)≥3.7Not availableNot available1.42
(0 of 10 samples)
Lead (µg/L)≥8.5Not availableNot available1.04
(0 of 10 samples)
Nickel (µg/L)≥8.3Not availableNot available0.58
(0 of 10 samples)
Silver (µg/L)≥0.92Not availableNot available0.01
(0 of 10 samples)
Zinc (µg/L)≥86Not availableNot available6.50
(0 of 10 samples)
Fecal Coliform (CFU/100 mL)<400Not availableNot available380
(2 of 10 samples)
Turbidity (NTU)<29Not availableNot available7.87
(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..