What is the water quality grade for Lake Walcott?

Lake Walcott in Cassia County, Idaho received a water quality grade of C (Fair). Water clarity: 4.3 ft visibility. Phosphorus: 50.5 µg/L. Chlorophyll-a (algae): 14.8 µg/L.

Is Lake Walcott safe to swim in?

Generally safe for swimming, moderate water quality. Lake Walcott has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 14.8 µg/L. Always check local health department advisories before swimming.

Cassia County, Idaho

Lake Walcott

Grade CFair · 4.3 ft clarity

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Eutrophic

Lake Walcott is a productive, nutrient-rich eutrophic lake in Cassia County, Idaho. Water quality is graded C based on 3 sampling years through 2024. Compared to the 2 other monitored lakes in Cassia County, Lake Walcott ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2024-09-16. 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 4.3 ft. Phosphorus level: 50.5 µg/L. Chlorophyll-a: 14.8 µg/L. Trophic State Index: 58.

Metric	Value	Grade
Water Clarity (Secchi Depth)	4.3 ft	D
Phosphorus	50.5 µg/L	C
Chlorophyll-a (Algae)	14.8 µg/L	C
Trophic State Index (TSI)	58	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Lake Walcott

Compare lakeside cabins, hotels, and vacation rentals near Lake Walcott in Cassia County, Idaho — 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.

Top-rated places to stay near Lake Walcott