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 2014c) shown above. The filtered dataset was used to generate Table 2.10.

2.7.11.3. Discussion

were relatively low when compared to other tributaries of the LSJRB. However, no causative pollutant (specific environmental condition) has been identified, and thus no TMDL report is required as it is the “natural condition” of the water body (DEP 2009c). 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).  However, the last valid measurements of fecal coliform available in STORET date back to 2008.

No recent measurements were available in STORET from 2015 to 2017 for the following parameter:

  • Fecal Coliform

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

Table 2.10 Water quality data for Durbin Creek (2015-2017).

 Water QualityAverage and Number of Samples º
ParameterCriteria201520162017
Dissolved Oxygen (mg/L)≥34% sat.
(≥3.0)
4.02
(2 of 7 samples)
3.67
(2 of 7 samples)
5.93
(0 of 3 samples)
Nitrate-nitrite N (mg/L)§§0.05
(7 samples)
0.07
(6 samples)
0.05
(3 samples)
Total Phosphorus (mg/L)<0.120.11
(4 of 12 samples)
0.09
(1 of 9 samples)
0.06
(0 of 6 samples)
Chlorophyll-a (µg/L)<200.88
(0 of 7 samples)
0.73
(0 of 6 samples)
0.61
(0 of 3 samples)
Arsenic (µg/L)≤500.50
(0 of 4 samples)
0.41
(0 of 5 samples)
0.41
(0 of 3 samples)
Cadmium (µg/L)≤0.30.03
(0 of 4 samples)
0.03
(0 of 5 samples)
0.03
(0 of 3 samples)
Copper (µg/L)≤9.30.51
(0 of 4 samples)
0.49
(0 of 5 samples)
0.27
(0 of 3 samples)
Lead (µg/L)≤3.20.45
(0 of 4 samples)
0.46
(0 of 5 samples)
0.26
(0 of 3 samples)
Nickel (µg/L)≤520.47
(0 of 4 samples)
0.50
(0 of 5 samples)
1.06
(0 of 3 samples)
Silver (µg/L)≤0.070.00
(0 of 4 samples)
0.00
(0 of 5 samples)
0.00
(0 of 3 samples)
Zinc (µg/L)≤1204.10
(0 of 4 samples)
6.74
(0 of 5 samples)
3.82
(0 of 3 samples)
Turbidity (NTU)<294.21
(0 of 6 samples)
6.83
(0 of 6 samples)
4.98
(0 of 3 samples)
Note: Hardness-dependent freshwater criteria for cadmium, copper, lead, nickel, and zinc were generated based on a hardness concentration of 100 mg/L.
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.