Ranking of Concern 80 out of 84
2018 Ranking: 40
2016 Ranking: 62
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The Sanctuary: Lake 4

26.43860, -82.11232

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Data Summary
Nutrients
2020 2018 2016
IN 0.019 0.025 0.015
TN 1.592.912.02
OP 0.0290.0450.055
TP 0.050.060.07
Chl-a 21.657.919.6
TSI 64.575.868.2
Salinity 10.70.55
DO 7.58.37.2

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The Sanctuary: Lake 4 has a current ranking of concern of 80 out of 84. We’ve analyzed 84 water bodies on Sanibel Island, and ranked them from 1 (most concerned) to 84 (least concerned) .

. . . . . = State Criteria: measurements above this line suggest impairment to the waterbody.