Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Eagle County Lake Quality

Colorado, 1 lake — no lake here has enough monitoring data for a grade

Eagle County has 1 monitored lake — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. No lake in Eagle County has enough sampling behind it for an A–F grade yet. The 1 monitored lake below carries whatever clarity, phosphorus, and chlorophyll-a measurements exist.

Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.

Slim Lake, Washburn County, Wisconsin. Photo: LakeQuality — Original photograph

Loading map…

Where to stay near Eagle County

Top-rated places to stay near Eagle County

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a trip to Eagle County?

Get lake water-quality report cards plus the best cabin & lodging deals near Eagle County — straight to your inbox. No spam, unsubscribe anytime.

Quick Answers for Eagle County

Cleanest lakes in Eagle County →Cleanest lakes in Colorado →Safest swimming lakes in Colorado →

Planning a trip? Check special fishing regulations for Buckhorn Reservoir Top — or check the official Colorado fishing regulations.

All Lakes in Eagle County

1 lake · 0 graded, 1 not rated0 graded lakes · 1 not rated, hidden

Include not-rated lakes (1)

#	Lake	Grade	Clarity	Phosphorus	Algae	Trophic	Access
	NRBuckhorn Reservoir TopEagle	NR	No recent samples	24 µg/L	1.2 µg/L	No recent samples	Not recorded

NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.

Lake Match