What is the water quality grade for Lake Nasworthy S Concho Arm?

Lake Nasworthy S Concho Arm in Tom Green County, Texas received a water quality grade of C (Fair). Water clarity: 1 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 12.5 µg/L.

Is Lake Nasworthy S Concho Arm safe to swim in?

Generally safe for swimming, moderate water quality. Lake Nasworthy S Concho Arm has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 12.5 µg/L. Always check local health department advisories before swimming.

Tom Green County, Texas

Lake Nasworthy S Concho Arm

Grade CFair · 1 ft clarity

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Eutrophic

Lake Nasworthy S Concho Arm is a productive, nutrient-rich eutrophic lake in Tom Green County, Texas. Water quality is graded C based on 2 sampling years through 2022. Compared to the 5 other monitored lakes in Tom Green County, Lake Nasworthy S Concho Arm ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2022-04-05. 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 ft of visibility. Phosphorus level: 30 µg/L. Chlorophyll-a: 12.5 µg/L. Trophic State Index: 62.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1 ft	F
Phosphorus	30 µg/L	C
Chlorophyll-a (Algae)	12.5 µg/L	C
Trophic State Index (TSI)	62	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Lake Nasworthy S Concho Arm

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