Clay-Ryan Lake
Clay County, FloridaLimited DataMesotrophic
Clay-Ryan Lake is a mesotrophic lake in Clay County, Florida. Water quality is graded B based on 1 sampling years through 2022. Compared to the 24 other monitored lakes in Clay County, Clay-Ryan Lake ranks #12 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2022-07-26. Grade methodology: LakeGrade methodology.
Watch Clay-Ryan Lake water quality
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
No clarity data. Phosphorus level: 23 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 23 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Location
County Ranking
Ranked #12 of 25 lakes in Clay County
Nearby Lakes in Clay County
More Florida Lake Rankings
Other Grade B Lakes in Florida
Bay County · Clarity: 4 ft
Brevard County · Clarity: 9.8 ft
Alachua County · Clarity: 5.5 ft
Seminole County · Clarity: 5 ft
Marion County · Clarity: 7 ft
Hillsborough County · Clarity: 6 ft
Mesotrophic Lakes in Florida
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Clay-Ryan Lake under Clean Water Act (NPDES) discharge permits.
- Middleburg Bluffs WwtfMiddleburg · 4.1 mi away · NPDES FL0113743
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)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-07-26
Monitoring stations: 3
Where to stay near Clay-Ryan Lake
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