Ranking of Concern 30 out of 84
2018 Ranking: 23
2016 Ranking: 36
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The Dunes: Lake 4

26.45515, -82.05254

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Data Summary
Nutrients
2020 2018 2016
IN 0.139 0.075 0.043
TN 3.014.912.15
OP 0.0280.0330.081
TP 0.10.140.14
Chl-a 61.888.317.8
TSI 76.986.572.8
Salinity 73.95.05
DO 95.56.85

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The Dunes: Lake 4 has a current ranking of concern of 30 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.