Lake Seminole
Jackson County, FloridaEutrophic
Lake Seminole is a productive, nutrient-rich eutrophic lake in Jackson County, Florida. Water quality is graded C based on 2 sampling years through 2025. Compared to the 21 other monitored lakes in Jackson County, Lake Seminole ranks #18 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-10-21. Grade methodology: LakeGrade methodology.
Watch Lake Seminole 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 4.3 ft. Phosphorus level: 30 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | D |
| Phosphorus | 30 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #18 of 22 lakes in Jackson County
Nearby Lakes in Jackson County
More Florida Lake Rankings
Other Grade C Lakes in Florida
Orange County · Clarity: 3.5 ft
Walton County · Clarity: 4.2 ft
Seminole County · Clarity: 4.5 ft
Seminole County · Clarity: 2.9 ft
Polk County · Clarity: 3.5 ft
Volusia County · Clarity: 4.5 ft
Eutrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Lake Seminole under Clean Water Act (NPDES) discharge permits, including 2 classified by the EPA as major dischargers. 3 facilities have a reported Clean Water Act violation in the past three years.
- Florida State Hospital WwtpChattahoochee · 2 mi away · NPDES FL0031402MajorRecent violation
- Scholz Electric Generating PlantSneads · 3.2 mi away · NPDES FL0002283MajorRecent violation
- Chattahoochee, City Of - WwtpChattahoochee · 2 mi away · NPDES FL0027669Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-10-21
Monitoring stations: 1
Where to stay near Lake Seminole
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