2.7.25. Ribault River 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) 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. 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)< - 2007
Chlorophyll-a (µg/L)<200.4327.7150282005 - 2007
Arsenic (µg/L)≤500.751.743232006 - 2007
Cadmium (µg/L)≤ - 2007
Copper (µg/L)≤9.312.566.4232006 - 2007
Lead (µg/L)≤ - 2007
Nickel (µg/L)≤520.51.222.6232006 - 2007
Silver (µg/L)≤ - 2007
Zinc (µg/L)≤1207.514.1139232006 - 2007
Fecal Coliform (log #/100 mL)<2.6- - 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.