What is the water quality grade for Amistad Reserv Devils R Arm Lake?

Amistad Reserv Devils R Arm Lake in Val Verde County, Texas received a water quality grade of C (Fair). Water clarity: 6.6 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 8 µg/L.

Is Amistad Reserv Devils R Arm Lake safe to swim in?

Generally safe for swimming, moderate water quality. Amistad Reserv Devils R Arm Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 8 µg/L. Always check local health department advisories before swimming.

Val Verde County, Texas

Amistad Reserv Devils R Arm Lake

Grade CFair · 6.6 ft clarity

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Eutrophic

Amistad Reserv Devils R Arm Lake is a productive, nutrient-rich eutrophic lake in Val Verde County, Texas. Water quality is graded C based on 2 sampling years through 2023. Compared to the 2 other monitored lakes in Val Verde County, Amistad Reserv Devils R Arm Lake ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2023-04-26. Grade methodology: LakeGrade methodology.

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 6.6 ft. Phosphorus level: 30 µg/L. Chlorophyll-a: 8 µg/L. Trophic State Index: 51.

Metric	Value	Grade
Water Clarity (Secchi Depth)	6.6 ft	C
Phosphorus	30 µg/L	C
Chlorophyll-a (Algae)	8 µg/L	C
Trophic State Index (TSI)	51	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Amistad Reserv Devils R Arm Lake

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