What is the water quality grade for Cascade Reservoir Inlet?

Cascade Reservoir Inlet in Valley County, Idaho received a water quality grade of C (Fair). Water clarity: 7.3 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 12.7 µg/L.

Is Cascade Reservoir Inlet safe to swim in?

Generally safe for swimming, moderate water quality. Cascade Reservoir Inlet has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 12.7 µg/L. Always check local health department advisories before swimming.

Valley County, Idaho

Cascade Reservoir Inlet

Grade CFair · 7.3 ft clarity

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Eutrophic

Cascade Reservoir Inlet 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 Reservoir Inlet ranks #10 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

Moderate clarity, visible to about 7.3 ft. Phosphorus level: 20 µg/L. Chlorophyll-a: 12.7 µg/L. Trophic State Index: 50.

Metric	Value	Grade
Water Clarity (Secchi Depth)	7.3 ft	C
Phosphorus	20 µg/L	B
Chlorophyll-a (Algae)	12.7 µg/L	C
Trophic State Index (TSI)	50	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Cascade Reservoir Inlet

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