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2023 Ranking of Concern 3out of 23
Water Quality Grade 2023
F
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Sanibel Communities for Clean Water > Communities

The Dunes: Lake 4

26.45515, -82.05254

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Data Summary
Nutrients
2023 2022 2020 2018
IN 0.444 0.014 0.139 0.075
TN 8.1 3.363.014.91
OP 0.344 0.020.0280.033
TP 0.69 0.080.10.14
Chl-a 241.5 47.361.888.3
TSI 86.3 75.576.986.5
Salinity 30.8 4.5573.9
DO 7.1 3.6595.5

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The Dunes: Lake 4 has a current ranking of concern of 39 out of 84. We’ve analyzed 84 water bodies on Sanibel Island, and ranked them from 1 (most concerned) to 84 (least concerned) .

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BMPs (Best Management Practices) implemented at The Dunes: Lake 4:

No BMPs have been reported at this location yet.

. . . . . = State Criteria: measurements above this line suggest impairment to the waterbody.
Historical Data
Rankings
  • 2023 Ranking: 3
  • 2022 Ranking: 39
  • 2020 Ranking: 30
  • 2018 Ranking: 23
  • 2016 Ranking: 36
Water Quality Grade
  • 2023 Grade: F
  • 2022 Grade: D
  • 2020 Grade: D
  • 2018 Grade: F
  • 2016 Grade: D
Most Impaired - Top 5
Least Impaired - Top 5
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