What is the water quality grade for O C Fisher Reservoir?

O C Fisher Reservoir in Tom Green County, Texas received a water quality grade of D (Poor). Water clarity: 1 ft visibility. Phosphorus: 65 µg/L. Chlorophyll-a (algae): 31.1 µg/L.

Is O C Fisher Reservoir safe to swim in?

Swimming not recommended, poor water quality with high algae risk. O C Fisher Reservoir has an overall water quality grade of D. Algae concentration (chlorophyll-a) is 31.1 µg/L. Always check local health department advisories before swimming.

Tom Green County, Texas

O C Fisher Reservoir

Grade DPoor · 1 ft clarity

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Eutrophic

O C Fisher Reservoir is a productive, nutrient-rich eutrophic lake in Tom Green County, Texas. Water quality is graded D based on 2 sampling years through 2021. Compared to the 5 other monitored lakes in Tom Green County, O C Fisher Reservoir ranks #6 for water quality.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2021-10-18. 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 1 ft of visibility. Phosphorus level: 65 µg/L. Chlorophyll-a: 31.1 µg/L. Trophic State Index: 69.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1 ft	F
Phosphorus	65 µg/L	D
Chlorophyll-a (Algae)	31.1 µg/L	D
Trophic State Index (TSI)	69	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near O C Fisher Reservoir

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