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Middle St. Johns - Florida Department of Environmental Protection

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340 Water Quality Assessment Report: <strong>Middle</strong> <strong>St</strong>. <strong>Johns</strong><br />

WBID<br />

Waterbody<br />

Segment Name<br />

Waterbody<br />

Type<br />

Waterbody<br />

Class<br />

1998 303(d)<br />

Parameters<br />

<strong>of</strong> Concern<br />

Parameters<br />

Identified Using<br />

the IWR<br />

Proposed<br />

<strong>St</strong>atus<br />

2956A Wekiva River <strong>St</strong>ream 3F Dissolved Oxygen Not<br />

Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Fecal Coliform<br />

Bacteria<br />

Not<br />

Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Iron Not<br />

Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Lead Not<br />

Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Nickel Not<br />

Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Nutrients (Chla) Not<br />

Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Total Coliform Not<br />

Bacteria Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Turbidity Not<br />

Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Un-Ionized Not<br />

Ammonia Impaired<br />

2956A Wekiva River <strong>St</strong>ream 3F Zinc Not<br />

Impaired<br />

Integrated<br />

Report<br />

Category 1<br />

Priority<br />

for<br />

TMDL<br />

Development<br />

Projected<br />

Year for<br />

TMDL<br />

Development<br />

Comments 3<br />

(# Exceedances/ # Samples)<br />

PP= Planning Period VP= Verified<br />

Period<br />

2 Dissolved oxygen is naturally low,<br />

and bioassessment data indicate<br />

that aquatic life use support is being<br />

maintained (3 passing<br />

bioassessments in the verified<br />

period 1997-1999) Nutrients (TN<br />

and TP) are within acceptable<br />

ranges. 46 TN values, median 0.95<br />

mg/l. 50 TP values, median 0.10<br />

mg/l. Insufficient BOD data. The 3<br />

dominant land uses in this area are<br />

wetlands (36%), upland forest<br />

(27%) and urban build-up (24%). PP<br />

- 18/66 values below DO criterion.<br />

VP - 10/41 values below DO<br />

criterion. DO median 6.8 mg/L,<br />

mean 6.8 mg/L, range 3.26 - 12.6<br />

mg/L over entire period.<br />

2<br />

2<br />

2<br />

2<br />

2<br />

2<br />

2<br />

2<br />

2

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