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Middle St. Johns - Florida Department of Environmental Protection

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348 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 />

2993 Lake Prevatt Lake 3F Nutrients Nutrients (TSI) Not<br />

Impaired<br />

2993 Lake Prevatt Lake 3F Coliform<br />

Bacteria<br />

Total Coliform<br />

Bacteria<br />

Not<br />

Impaired<br />

2993 Lake Prevatt Lake 3F Turbidity Not<br />

Impaired<br />

2993 Lake Prevatt Lake 3F Un-Ionized Not 2<br />

Ammonia Impaired<br />

2993A Dream Lake Lake 3F No Data 3a<br />

2993B Lake Prevatt Outlet Lake 3F No Data 3a<br />

2998 Cranes Roost Lake 3F Nutrients (TSI) Not 2<br />

Outlet<br />

Impaired<br />

2998A Lake <strong>Florida</strong> Lake 3F Nutrients (TSI) Verified<br />

List<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 Delist. PP - 0 TSI annual means<br />

exceeded 60, 63 chla values, range<br />

<strong>of</strong> chla values 0 - 83.1 ug/L, mean<br />

chla over entire period 20.36 ug/L.<br />

VP - 0 TSI annual means exceeded<br />

60, 15 chla values, range <strong>of</strong> chla<br />

values 0 - 68 ug/L, mean chla over<br />

entire period 8.12 ug/L. The TSI<br />

annual means were 1994-57.6 and<br />

1996-45.8. 11 TN values, median<br />

1.02 mg/l. 11 TP values, median<br />

0.03 mg/l.<br />

2 This segment is being delisted<br />

because there were sufficient data<br />

for the planning list assessment.<br />

PP - 1/19 values exceed criterion,<br />

range 2.0 - 7700 colonies/100ml.<br />

VP - 0/5 values exceed criterion,<br />

range 40.0 - 2100 colonies/100ml.<br />

2<br />

5 Medium 2008 Co-limitation by nitrogen and<br />

phosphorus based on a TN/TP<br />

median <strong>of</strong> 21 (186 values) during<br />

the PP and a median <strong>of</strong> 22 (242<br />

values) during the VP. PP - 0 TSI<br />

annual means exceeded 60. VP - 1<br />

TSI annual mean exceeded 60<br />

(2002). 257 TN values, median<br />

0.83 mg/L. 258 TP values, median<br />

0.04 mg/L.

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