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

Arapahoe County Lake Quality

Colorado, 11 lakes, measured by Colorado WQCD

Arapahoe County holds 11 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. The 11 monitored lakes in Arapahoe County carry whatever clarity, phosphorus, and chlorophyll-a readings Colorado WQCD has published, shown as reported.

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.

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Where to stay near Arapahoe County

Top-rated places to stay near Arapahoe County

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Quick Answers for Arapahoe County

Cleanest lakes in Arapahoe County →Cleanest lakes in Colorado →Best swimming lakes in Colorado →

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

All Lakes in Arapahoe County

11 lakes · 0 ranked on readings, 11 without enough sampling0 lakes ranked on readings · 11 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicAccess
Cherry Creek Reservoir TopArapahoeNo recent samples59 µg/L3.1 µg/LNo recent samples✓ Public
Cherry Creek Reservoir BottomArapahoeNo recent samples76 µg/LNo recent samplesNo recent samplesNot recorded
Bowles LakeArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
McLellan ReservoirArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Cooley LakeArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Eaglewatch LakeArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
South Platte ReservoirArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Quincy ReservoirArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Aurora ReservoirArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Jolly John ReservoirArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Noonen ReservoirArapahoeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Other Counties in Colorado

Pueblo County

15 lakes

Jackson County

22 lakes

Montrose County

6 lakes

Moffat County

8 lakes

Jefferson County

29 lakes

San Juan County

8 lakes

Browse every Colorado lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: the Water Quality Control Division of the Colorado Department of Public Health and Environment. See data sources.