Blue Cove Lake
Marion County, FloridaEutrophic
Blue Cove Lake is a productive, nutrient-rich eutrophic lake in Marion County, Florida. Water quality is graded F based on 2 sampling years through 2025. Compared to the 41 other monitored lakes in Marion County, Blue Cove Lake ranks #42 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-07-28. 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 2.5 ft of visibility. Phosphorus level: 120 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.5 ft | F |
| Phosphorus | 120 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #42 of 42 lakes in Marion County
Cleaner Lakes Within 30 Miles
Blue Cove Lake holds Grade F. 3 nearby lakes hold higher grades.
- CLkrousseau LakeCitrus County · 8.2 mi · Two grade letters higher (F → C)
- DLkottng LakeMarion County · 6.8 mi · Higher grade (F → D)
- DLake RousseauCitrus County · 8.1 mi · Higher grade (F → D)
Nearby Lakes in Marion County
More Florida Lake Rankings
Other Grade F Lakes in Florida
Eutrophic Lakes in Florida
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-07-28
Monitoring stations: 1
Where to stay near Blue Cove Lake
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