Middle St. Johns - Florida Department of Environmental Protection

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340 Water Quality Assessment Report: Middle St. Johns WBID Waterbody Segment Name Waterbody Type Waterbody Class 1998 303(d) Parameters of Concern Parameters Identified Using the IWR Proposed Status 2956A Wekiva River Stream 3F Dissolved Oxygen Not Impaired 2956A Wekiva River Stream 3F Fecal Coliform Bacteria Not Impaired 2956A Wekiva River Stream 3F Iron Not Impaired 2956A Wekiva River Stream 3F Lead Not Impaired 2956A Wekiva River Stream 3F Nickel Not Impaired 2956A Wekiva River Stream 3F Nutrients (Chla) Not Impaired 2956A Wekiva River Stream 3F Total Coliform Not Bacteria Impaired 2956A Wekiva River Stream 3F Turbidity Not Impaired 2956A Wekiva River Stream 3F Un-Ionized Not Ammonia Impaired 2956A Wekiva River Stream 3F Zinc Not Impaired Integrated Report Category 1 Priority for TMDL Development Projected Year for TMDL Development Comments 3 (# Exceedances/ # Samples) PP= Planning Period VP= Verified Period 2 Dissolved oxygen is naturally low, and bioassessment data indicate that aquatic life use support is being maintained (3 passing bioassessments in the verified period 1997-1999) Nutrients (TN and TP) are within acceptable ranges. 46 TN values, median 0.95 mg/l. 50 TP values, median 0.10 mg/l. Insufficient BOD data. The 3 dominant land uses in this area are wetlands (36%), upland forest (27%) and urban build-up (24%). PP - 18/66 values below DO criterion. VP - 10/41 values below DO criterion. DO median 6.8 mg/L, mean 6.8 mg/L, range 3.26 - 12.6 mg/L over entire period. 2 2 2 2 2 2 2 2 2
Water Quality Assessment Report: Middle St. Johns 341 WBID Waterbody Segment Name Waterbody Type Waterbody Class 1998 303(d) Parameters of Concern Parameters Identified Using the IWR Proposed Status 2956A1 Linden Lake Lake 3F Nutrients (TSI) Not Impaired 2956B Wekiva River Stream 3F Biology Not Lower Impaired 2956B Wekiva River Stream 3F Dissolved Oxygen Not Lower Impaired 2956B 2956B 2956B 2956B 2956B 2956C 2956C Wekiva River Lower Wekiva River Lower Wekiva River Lower Wekiva River Lower Wekiva River Lower Wekiva Spring (Orange) Wekiva Spring (Orange) Stream 3F Fecal Coliform Bacteria Not Impaired Stream 3F Nutrients (Chla) Not Impaired Stream 3F Total Coliform Not Bacteria Impaired Stream 3F Turbidity Not Impaired Stream 3F Un-Ionized Not Ammonia Impaired Stream 3F Dissolved Oxygen Planning List Stream 3F Coliform Fecal Coliform Insufficient Bacteria Bacteria Data Integrated Report Category 1 2 2 Priority for TMDL Development 2 Projected Comments 3 Year for TMDL Development Period 2 (# Exceedances/ # Samples) PP= Planning Period VP= Verified 2 Dissolved oxygen is naturally low, and bioassessment data indicate that aquatic life use support is being maintained (2 passing bioassessments in the verified period). Nutrients (TN and TP) are within acceptable ranges. 45 TN values, median 0.87 mg/l. 43 TP values, median 0.09 mg/l. No BOD data. PP - 56/114 values below DO criterion. VP - 19/34 values below DO criterion. 256 DO values, range 0.45 9.0 mg/l, mean 4.67 mg/l, median 5 mg/l. 2 2 2 2 2 3c PP - 4/12 values below DO criterion. VP - 8/12 values below DO criterion. 3c (High) (2004) PP - 0/6 values exceed criterion. VP - 0/4 values exceed criterion.
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FLORIDA DEPARTMENT OF ENVIRONMENTAL
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Middle St. Johns - Florida Department of Environmental Protection

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