What is the water quality grade for Lake J B Thomas?

Lake J B Thomas in Scurry County, Texas received a water quality grade of C (Fair). Water clarity: 1.6 ft visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 11 µg/L.

Is Lake J B Thomas safe to swim in?

Generally safe for swimming, moderate water quality. Lake J B Thomas has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 11 µg/L. Always check local health department advisories before swimming.

Scurry County, Texas

Lake J B Thomas

Grade CFair · 1.6 ft clarity

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Eutrophic

Lake J B Thomas is a productive, nutrient-rich eutrophic lake in Scurry County, Texas. Water quality is graded C based on 2 sampling years through 2020.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2020-10-13. Grade methodology: LakeGrade methodology.

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Very murky, less than 1.6 ft of visibility. Phosphorus level: 36 µg/L. Chlorophyll-a: 11 µg/L. Trophic State Index: 60.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.6 ft	F
Phosphorus	36 µg/L	C
Chlorophyll-a (Algae)	11 µg/L	C
Trophic State Index (TSI)	60	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Lake J B Thomas

Compare lakeside cabins, hotels, and vacation rentals near Lake J B Thomas in Scurry County, Texas — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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