Charlotte-Sunapee Lake
Charlotte County, FloridaHypereutrophic
Charlotte-Sunapee Lake is a highly nutrient-loaded hypereutrophic lake in Charlotte County, Florida. Water quality is graded F based on 2 sampling years through 2024. Compared to the 14 other monitored lakes in Charlotte County, Charlotte-Sunapee Lake ranks #15 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2024-09-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.8 ft of visibility. Phosphorus level: 129.5 µg/L. Trophic State Index: 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 ft | F |
| Phosphorus | 129.5 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #15 of 15 lakes in Charlotte County
Cleaner Lakes Within 30 Miles
Charlotte-Sunapee Lake holds Grade F. 2 nearby lakes hold higher grades.
- DCharlotte-Casa-de-Medows LakeCharlotte County · 2 mi · Higher grade (F → D)
- DCharlotte-Sturgeon LakeCharlotte County · 0.3 mi · Higher grade (F → D)
Nearby Lakes in Charlotte County
More Florida Lake Rankings
Other Grade F Lakes in Florida
Hypereutrophic Lakes in Florida
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-01
Monitoring stations: 2
Where to stay near Charlotte-Sunapee Lake
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