Mckay Creek Lake
Pinellas County, FloridaLimited DataMesotrophic
Mckay Creek Lake is a mesotrophic lake in Pinellas County, Florida. Water quality is graded B based on 1 sampling years through 2025. Compared to the 54 other monitored lakes in Pinellas County, Mckay Creek Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-01-22. Grade methodology: LakeGrade methodology.
Watch Mckay Creek 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: 20 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 20 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Location
County Ranking
Ranked #1 of 55 lakes in Pinellas County
Nearby Lakes in Pinellas 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
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Mckay Creek Lake under Clean Water Act (NPDES) discharge permits, including 2 classified by the EPA as major dischargers.
- Indian Rocks Beach, City OfIndian Rocks Beach · 2.6 mi away · NPDES FLS648248Major
- Belleair Beach, City OfBelleair Beach · 3.2 mi away · NPDES FLS648191Major
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: 2025-01-22
Monitoring stations: 1
Where to stay near Mckay Creek Lake
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