Lake Minnie
Seminole County, FloridaEutrophic
Lake Minnie is a productive, nutrient-rich eutrophic lake in Seminole County, Florida. Water quality is graded D based on 2 sampling years through 2025. Compared to the 167 other monitored lakes in Seminole County, Lake Minnie ranks #145 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-07-16. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 2.3 ft of visibility. Phosphorus level: 51 µg/L. Trophic State Index: 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 ft | F |
| Phosphorus | 51 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #145 of 168 lakes in Seminole County
Cleaner Lakes Within 30 Miles
Lake Minnie holds Grade D. 5 nearby lakes hold higher grades.
- BSeminole-Little Mary LakeSeminole County · 1.5 mi · Two grade letters higher (D → B)
- BSeminole-Mary LakeSeminole County · 1.4 mi · Two grade letters higher (D → B)
- BLake BelairSeminole County · 2 mi · Two grade letters higher (D → B)
- CEast Crystal LakeSeminole County · 1.6 mi · Higher grade (D → C)
- CEast Crystal Lake @ CenterSeminole County · 1.8 mi · Higher grade (D → C)
Nearby Lakes in Seminole County
More Florida Lake Rankings
Other Grade D 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: 2025-07-16
Monitoring stations: 3
Where to stay near Lake Minnie
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