Middle St. Johns - Florida Department of Environmental Protection

168
Water Quality Assessment Report: Middle St. Johns
Table 4.2 (contined)
Planning
Unit
Wekiva
River
Wekiva
River
Wekiva
River
WBID
2987A
2998A
2998C
Waterbody
Segment
Spring
Lake
Lake
Florida
Lake
Orienta
Waterbody
Type
Lake
Lake
Lake
1998
303(d)
Parameters
of Concern
Parameters
Identified
Using
the 2002
Impaired
Surface
Waters Rule
Nutrients
(TSI)
Nutrients
(TSI)
Nutrients
(TSI)
Priority for
TMDL
Development *
Projected
Year for TMDL
Development *
Comments
Medium 2008 P limited based on a TN/TP
median of 37 (228 values)
in the planning period and a
median of 37 (230 values) in
the verified period. Planning
period: 6 TSI annual means
exceeded 60 (1995–2000);
verified period: 7 TSI
annual means exceeded 60
(1996–2002). 261 TN values,
median 1.53 mg/L, mean 1.55
mg/L. 275 TP values, median
0.041 mg/L, mean 0.04 mg/L.
Medium 2008 Colimitation by N and P
based on a TN/TP median
of 21 (186 values) during the
planning period and a median
of 22 (242 values) during the
verified period. Planning
period: 0 TSI annual means
exceeded 60; verified period:
1 TSI annual mean exceeded
60 (2002). 257 TN values,
median 0.83 mg/L. 258 TP
values, median 0.04 mg/L.
Medium 2008 Colimitation of N and P based
on a TN/TP median of 31
(31 values) during the planning
period and a median of
30 (696 values) during the
verified period. Planning
period: 3 TSI annual means
exceeded 60 (1996, 1999,
2000); verified period: 5 TSI
annual means exceeded 60
(1996, 1999–2002). 725 TN
values, median 1.26 mg/L,
mean 1.33 mg/L. 726 TP
values, median 0.04 mg/L,
mean 0.04 mg/L.