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 2014c) shown above. The filtered dataset was used to generate Table 2.15.

2.7.17.3. Discussion

Water quality data for Julington Creek are shown in Table 2.15, but the data available in STORET for Julington Creek are extremely limited, with no measurements reported for 2017. Julington Creek was identified as being impaired for iron (DEP 2016j).

The fecal coliform level, averaged over all the stations in Julington Creek, were historically higher than the WQC 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). Limited measurements from 2015 and 2016 indicate fecal coliform levels that are near or slightly lower than the WQC, but no new data were reported for 2017.

No recent measurements were available in STORET between 2015 and 2017 for the following parameters:

  • Nitrate-nitrite nitrogen
  • Cadmium
  • Silver
  • Total phosphorus
  • Copper
  • Zinc
  • Chlorophyll-a
  • Lead
  • Turbidity
  • Arsenic
  • Nickel

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

Table 2.15 Water quality data for Julington Creek (2015-2017).

 Water QualityAverage and Number of Samples º
ParameterCriteria201520162017
Dissolved Oxygen (mg/L)≥34% sat. (≥3.0)5.97
(0 of 2 samples)
7.54
(0 of 4 samples)
No data
Fecal Coliform (CFU/100 mL)<400300
(1 of 4 samples)
400
(2 of 4 samples)
No data
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
º = Number of samples below WQC for Dissolved Oxygen, Number of samples above WQC 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.
§ = No water quality criterion has been established for Nitrate-Nitrite nitrogen. No Total Nitrogen data were available in STORET for 2015-2017.