Lake Asher
Seminole County, FloridaEutrophic
Lake Asher is a productive, nutrient-rich eutrophic lake in Seminole County, Florida. Water quality is graded C based on 2 sampling years through 2025. Compared to the 167 other monitored lakes in Seminole County, Lake Asher ranks #103 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-07-22. Grade methodology: LakeGrade methodology.
Watch Lake Asher water quality
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 3.9 ft. Phosphorus level: 45.5 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.9 ft | D |
| Phosphorus | 45.5 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #103 of 168 lakes in Seminole County
Cleaner Lakes Within 30 Miles
Lake Asher holds Grade C. 5 nearby lakes hold higher grades.
- ASeminole-Bear LakeSeminole County · 0.5 mi · Two grade letters higher (C → A)
- AMrrlakeSeminole County · 0.7 mi · Two grade letters higher (C → A)
- BBear LakeSeminole County · 0.3 mi · Higher grade (C → B)
- BBearlk LakeSeminole County · 0.5 mi · Higher grade (C → B)
- BMirror LakeSeminole County · 0.7 mi · Higher grade (C → B)
Nearby Lakes in Seminole County
More Florida Lake Rankings
Other Grade C Lakes in Florida
Orange County · Clarity: 3.5 ft
Walton County · Clarity: 4.2 ft
Polk County · Clarity: 3.5 ft
Volusia County · Clarity: 4.5 ft
Walton County · Clarity: 3 ft
Alachua County · Clarity: 3 ft
Eutrophic 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: 2025-07-22
Monitoring stations: 1
Where to stay near Lake Asher
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