2.7.27. Sixmile Creek

2.7.27.1. About the Sixmile Creek

Figure 2.56 The Sixmile Creek Tributary (WBID 2411) with sanitary sewer overflows reported by JEA in 2019 (JEA 2019b).
Figure 2.56 The Sixmile Creek Tributary (WBID 2411) with sanitary sewer overflows reported by JEA in 2019 (JEA 2019b).
  • East of the St. Johns River in St. Johns County
  • Primary Land Use: Forested/Wetland
  • Current TMDL reports: Mercury
  • Not included in 2016 Verified List of Impaired Waters
  • WBID Area: 59.5 sq. mi.
  • Beneficial Use: Class III F (Recreational – Freshwater)

2.7.27.2. Data sources

Data were downloaded from the FL STORET and WIN websites (DEP 2010f; DEP 2018c) and filtered based on the stations (DEP 2010g) in the Sixmile Creek WBID 2411 (DEP 2014c) shown above.

2.7.27.3. Discussion

 

No water quality data for Sixmile Creek were available in WIN or STORET since 2015.  Historically, dissolved oxygen levels in Sixmile Creek were relatively low compared to other tributaries. Chlorophyll-a and silver levels exceeded WQC in the past, but both had been decreasing. The last reported silver and chlorophyll-a measurements were from 2011 and 2015, respectively.

No recent measurements were available in WIN or STORET between 2016 and 2018 for the following parameters:

  • Dissolved oxygen
  • Cadmium
  • Silver
  • Total phosphorus
  • Copper
  • Zinc
  • Total nitrogen
  • Lead
  • Fecal Coliform
  • Chlorophyll-a
  • Nickel
  • Turbidity
  • Arsenic

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