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2024 Ranking of Concern 36 out of 45
Water Quality Grade 2024
C
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Sanibel Communities for Clean Water > Communities

The Dunes: Lake 9

26.45007, -82.04718

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Data Summary
Nutrients
2024 2022 2020
IN 0.1570.030.025
TN 2.64.352.68
OP 0.0310.0320.066
TP 0.050.070.13
Chl-a 17.966.952.5
TSI 68.780.279.4
Salinity 20.22.94.35
DO 4.95.857.05

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The most recent samples from The Dunes: Lake 9 were taken in 2024, where it ranked 36 out of 46 sites tested that year. In this dataset, a ranking of 1 represents the most impaired site, while 46 represents the least impaired.

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BMPs (Best Management Practices) implemented at The Dunes: Lake 9:

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: Not tested
  • 2024 Ranking: 36 out of 46 sites tested
  • 2023 Ranking: Not tested
  • 2022 Ranking: 13 out of 84 sites tested
  • 2020 Ranking: 38 out of 84 sites tested
  • 2018 Ranking: 36 out of 78 sites tested
  • 2016 Ranking: 15 out of 78 sites tested
Water Quality Grade
  • 2025 Grade: Not tested
  • 2024 Grade: C
  • 2023 Grade: Not tested
  • 2022 Grade: D
  • 2020 Grade: D
  • 2018 Grade: F
  • 2016 Grade: D
Most Impaired - Top 5
Least Impaired - Top 5
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