What is the water quality grade for Stagecoach Reservoir?

Stagecoach Reservoir in Routt County, Colorado received a water quality grade of C (Fair). Water clarity: 7.5 ft visibility. Phosphorus: 33.5 µg/L. Chlorophyll-a (algae): 18.9 µg/L.

Is Stagecoach Reservoir safe to swim in?

Swim with caution, moderate algae may be present. Stagecoach Reservoir has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 18.9 µg/L. Always check local health department advisories before swimming.

Routt County, Colorado

Stagecoach Reservoir

Grade CFair · 7.5 ft clarity

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Eutrophic

Stagecoach Reservoir is a productive, nutrient-rich eutrophic lake in Routt County, Colorado. Water quality is graded C based on 3 sampling years through 2023. Compared to the 4 other monitored lakes in Routt County, Stagecoach Reservoir ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, Colorado DNR, last sampled 2023-09-12. Grade methodology: LakeGrade methodology.

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Swimming Safety

Swim with caution, moderate algae may be present

Water Quality Grade: C, Fair

Moderate clarity, visible to about 7.5 ft. Phosphorus level: 33.5 µg/L. Chlorophyll-a: 18.9 µg/L. Trophic State Index: 54.

Metric	Value	Grade
Water Clarity (Secchi Depth)	7.5 ft	C
Phosphorus	33.5 µg/L	C
Chlorophyll-a (Algae)	18.9 µg/L	C
Trophic State Index (TSI)	54	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Stagecoach Reservoir

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