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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> 325<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 />

2951 Lake Marie 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 />

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

phosphorus based on a TN/TP<br />

median <strong>of</strong> 26 (66 values) during the<br />

PP and a median <strong>of</strong> 24 (48 values)<br />

during the VP. PP - 1 TSI annual<br />

mean exceeded 60 (1996). VP - 1<br />

TSI annual mean exceeded 60<br />

(1996). 48 TN values, median 1.04<br />

mg/L. 48 TP values, median 0.05<br />

mg/L.<br />

2951A Lake Marie Outlet Lake 3F No Data 3a<br />

2953 Bethel Lake Lake 3F Nutrients (TSI) Not 2<br />

Impaired<br />

2953A Broken Arrow Lake Lake 3F Nutrients (TSI) Not 2<br />

Impaired<br />

2953A1 Bethel Lake Outlet Lake 3F No Data 3a<br />

2953B Big Lake Lake 3F Nutrients (TSI) Not 2<br />

Impaired<br />

2953C Jenkins Pond Lake 3F No Data 3a<br />

2954 Konomac Lake Lake 3F No Data 3a<br />

Reservoir<br />

2959A Little Lake Lake 3F No Data 3a<br />

2962 Smith Canal <strong>St</strong>ream 3F Biology Planning 3c 1 failed bioassessment in 1993.<br />

List<br />

2962 Smith Canal <strong>St</strong>ream 3F Dissolved<br />

Oxygen<br />

Dissolved Oxygen Verified<br />

List<br />

5 Low 2008 PP - 2/7 values below DO criterion.<br />

VP - 16/31 values below DO<br />

criterion. DO met verification<br />

threshold <strong>of</strong> IWR and BOD is the<br />

causative pollutant. BOD median =<br />

2.1mg/l. 36 DO values, median 5.21<br />

mg/l, mean 5.31 mg/l, range 1.99 -<br />

10.17mg/l.<br />

2962 Smith Canal <strong>St</strong>ream 3F Coliform<br />

Bacteria<br />

Fecal Coliform<br />

Bacteria<br />

Verified<br />

List<br />

5 Low 2008 PP - 1/4 values exceed criterion.<br />

VP - 8/30 values exceed criterion.<br />

Coliform median 247 colonies/100<br />

ml, range 1-870 colonies/100 ml.<br />

No more than 2 values per month.

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