What is the water quality grade for Cascade R Lake?

Cascade R Lake in Valley County, Idaho received a water quality grade of C (Fair). Water clarity: 5.7 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 8.6 µg/L.

Is Cascade R Lake safe to swim in?

Generally safe for swimming, moderate water quality. Cascade R Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 8.6 µg/L. Always check local health department advisories before swimming.

Valley County, Idaho · 44.70°N

Cascade R Lake

Grade CFair · 5.7 ft clarity

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Eutrophic

Cascade R Lake is a productive, nutrient-rich eutrophic lake in Valley County, Idaho. Water quality is graded C based on 3 sampling years through 2022. Compared to the 14 other monitored lakes in Valley County, Cascade R Lake ranks #13 for water quality.

Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2022-09-22. 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 5.7 ft. Phosphorus level: 30 µg/L. Chlorophyll-a: 8.6 µg/L. Trophic State Index: 52.

Metric	Value	Grade
Water Clarity (Secchi Depth)	5.7 ft	D
Phosphorus	30 µg/L	C
Chlorophyll-a (Algae)	8.6 µg/L	B
Trophic State Index (TSI)	52	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Cascade R Lake

Compare lakeside cabins, hotels, and vacation rentals near Cascade R Lake in Valley 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 Cascade R Lake