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Middle St. Johns - Florida Department of Environmental Protection

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Water Quality Assessment Report: <strong>Middle</strong> <strong>St</strong>. <strong>Johns</strong> 265<br />

WBID<br />

2991A<br />

2991A<br />

2991A<br />

Waterbody<br />

Segment Name<br />

Econlockhatchee<br />

River<br />

Econlockhatchee<br />

River<br />

Econlockhatchee<br />

River<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 />

<strong>St</strong>ream 3F Nutrients Nutrients (Chla) Not<br />

Impaired<br />

<strong>St</strong>ream 3F Silver Planning<br />

List<br />

<strong>St</strong>ream 3F Coliform Total Coliform Not<br />

Bacteria Bacteria Impaired<br />

2991A Econlockhatchee<br />

River<br />

<strong>St</strong>ream 3F Turbidity Not<br />

Impaired<br />

2991A Econlockhatchee <strong>St</strong>ream 3F Un-Ionized Not<br />

River<br />

Ammonia Impaired<br />

2991A Econlockhatchee <strong>St</strong>ream 3F Zinc Not<br />

River<br />

Impaired<br />

2991B Buck Lake Lake 3F Nutrients (TSI) Not<br />

Impaired<br />

2991C Island Pond Lake 3F Nutrients (TSI) Not<br />

Impaired<br />

2991D Horseshoe Lake Lake 3F Nutrients (TSI) 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 Delist. PP - 0 chla annual means<br />

exceeded 20 ug/l, 833 chla values,<br />

range <strong>of</strong> chla values 0 - 33 ug/L,<br />

mean chla over entire period 1.53<br />

ug/L. VP - 0 chla annual means<br />

exceeded 20 ug/l, 103 chla values,<br />

range <strong>of</strong> chla values 0.01 - 18.8<br />

ug/L, mean chla over entire period<br />

2.04 ug/L. The annual chla<br />

concentrations were: 1991-1.4 ug/l,<br />

1992-1.2 ug/l, 1993-1.6 ug/l, 1994-<br />

1.1 ug/l, 1995-1.7 ug/l, 1996-2.6<br />

ug/l, 2001-1.0 ug/l, and 2002-1.6<br />

ug/l. 190 TN values, median 0.97<br />

mg/l. 196 TP values, median 0.09<br />

mg/l.<br />

3c PP - 3/3 values exceed criterion. VP<br />

- No data.<br />

2 Delist. PP - 1/93 values exceed<br />

criterion, range 8.0 - 2600<br />

colonies/100ml. VP - 0/16 values<br />

exceed criterion, range 8 - 570<br />

colonies/100ml.<br />

2<br />

2<br />

2<br />

2<br />

2<br />

2

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