Sarasota-Upper Myakka Lake
Sarasota County, FloridaHypereutrophic
Sarasota-Upper Myakka Lake is a highly nutrient-loaded hypereutrophic lake in Sarasota County, Florida. Water quality is graded F based on 2 sampling years through 2025. Compared to the 37 other monitored lakes in Sarasota County, Sarasota-Upper Myakka Lake ranks #30 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-01-27. 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 2 ft of visibility. Phosphorus level: 392 µg/L. Trophic State Index: 79.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | F |
| Phosphorus | 392 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 79 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #30 of 38 lakes in Sarasota County
Cleaner Lakes Within 30 Miles
Sarasota-Upper Myakka Lake holds Grade F. 2 nearby lakes hold higher grades.
- CSarasota-Sundrop LakeSarasota County · 10.9 mi · Two grade letters higher (F → C)
- DSarasota-Moondrop LakeSarasota County · 11 mi · Higher grade (F → D)
Nearby Lakes in Sarasota County
More Florida Lake Rankings
Other Grade F Lakes in Florida
Hypereutrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-01-27
Monitoring stations: 3
Where to stay near Sarasota-Upper Myakka Lake
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