What is the water quality grade for Sweitzer Reservoir?

Sweitzer Reservoir in Delta County, Colorado received a water quality grade of D (Poor). Water clarity: 3.6 ft visibility.

Is Sweitzer Reservoir safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Sweitzer Reservoir has an overall water quality grade of D. Always check local health department advisories before swimming.

Delta County, Colorado

Sweitzer Reservoir

Grade DPoor · 3.6 ft clarity

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Limited DataEutrophic

Sweitzer Reservoir is a productive, nutrient-rich eutrophic lake in Delta County, Colorado. Water quality is graded D based on 1 sampling years through 2023. Compared to the 3 other monitored lakes in Delta County, Sweitzer 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

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 3.6 ft. Trophic State Index: 59.

Metric	Value	Grade
Water Clarity (Secchi Depth)	3.6 ft	D
Phosphorus	No data
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	59	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Sweitzer Reservoir

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