What is the water quality grade for Pat Cleburne Reservoir?

Pat Cleburne Reservoir in Johnson County, Texas received a water quality grade of D (Poor). Water clarity: 2.4 ft visibility. Phosphorus: 50 µg/L. Chlorophyll-a (algae): 46.9 µg/L.

Is Pat Cleburne Reservoir safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Pat Cleburne Reservoir has an overall water quality grade of D. Algae concentration (chlorophyll-a) is 46.9 µg/L. Always check local health department advisories before swimming.

Johnson County, Texas

Pat Cleburne Reservoir

Grade DPoor · 2.4 ft clarity

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Eutrophic

Pat Cleburne Reservoir is a productive, nutrient-rich eutrophic lake in Johnson County, Texas. Water quality is graded D based on 2 sampling years through 2026.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2026-03-02. 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 2.4 ft of visibility. Phosphorus level: 50 µg/L. Chlorophyll-a: 46.9 µg/L. Trophic State Index: 64.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.4 ft	F
Phosphorus	50 µg/L	C
Chlorophyll-a (Algae)	46.9 µg/L	F
Trophic State Index (TSI)	64	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Pat Cleburne Reservoir

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