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2025 Ranking of Concern 28 out of 39
Water Quality Grade 2025
C
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Sanibel Communities for Clean Water > Communities

The Dunes: Lake 5

26.45300, -82.04227

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Data Summary
Nutrients
2025 2024 2023
IN 0.0480.3060.409
TN 1.163.642
OP 0.2360.1260.053
TP 0.210.210.12
Chl-a 13.378.578.7
TSI 70.786.679.8
Salinity 12.11628
DO 5.347.9

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The most recent samples from The Dunes: Lake 5 were taken in 2025, where it ranked 28 out of 39 sites tested that year. In this dataset, a ranking of 1 represents the most impaired site, while 39 represents the least impaired.

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BMPs (Best Management Practices) implemented at The Dunes: Lake 5:

No BMPs have been reported at this location yet.

. . . . . = State Criteria: measurements above this line suggest impairment to the waterbody.
Historical Data
Rankings
  • 2025 Ranking: 28 out of 39 sites tested
  • 2024 Ranking: 5 out of 46 sites tested
  • 2023 Ranking: 7 out of 23 sites tested
  • 2022 Ranking: 16 out of 84 sites tested
  • 2020 Ranking: 14 out of 84 sites tested
  • 2018 Ranking: 35 out of 78 sites tested
  • 2016 Ranking: 11 out of 78 sites tested
Water Quality Grade
  • 2025 Grade: C
  • 2024 Grade: F
  • 2023 Grade: D
  • 2022 Grade: D
  • 2020 Grade: F
  • 2018 Grade: D
  • 2016 Grade: D
Most Impaired - Top 5
Least Impaired - Top 5
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