What is the water quality grade for Crawford Reservoir?

Crawford Reservoir in Delta County, Colorado received a water quality grade of D (Poor). Water clarity: 5.6 ft visibility.

Is Crawford Reservoir safe to swim in?

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

Delta County, Colorado

Crawford Reservoir

Grade DPoor · 5.6 ft clarity

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Limited DataEutrophic

Crawford 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, Crawford Reservoir ranks #4 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 5.6 ft. Trophic State Index: 52.

Metric	Value	Grade
Water Clarity (Secchi Depth)	5.6 ft	D
Phosphorus	No data
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	52	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Crawford Reservoir

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