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

Sweetwater County Lake Quality

Wyoming, 26 lakes, measured by Wyoming DEQ

The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. The 26 monitored lakes in Sweetwater County carry whatever clarity, phosphorus, and chlorophyll-a readings Wyoming DEQ 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 Sweetwater County

Top-rated places to stay near Sweetwater County

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Quick Answers for Sweetwater County

Cleanest lakes in Sweetwater County →Best swimming lakes in Wyoming →

Planning a trip? Check special fishing regulations for Flaming Gorge Reservoir — or check the official Wyoming fishing regulations.

All Lakes in Sweetwater County

26 lakes · 0 ranked on readings, 26 without enough sampling0 lakes ranked on readings · 26 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicAccess
Flaming Gorge ReservoirSweetwater11.8 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
Blacks Fork LakeSweetwater8.5 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
Blacks Fork Inflow LakeSweetwater5.2 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
Jim Bridger PondSweetwater4.9 ft13 µg/LNo recent samplesNo recent samples✓ Public
Big Sandy ReservoirSweetwater0.7 ft45 µg/LNo recent samplesNo recent samples✓ Public
Green River Inflow LakeSweetwater1.6 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
Flaming Gorge-Green River Off Firehole Canyon Campground LakeSweetwater4.4 ftNo recent samples1.6 µg/LNo recent samplesNot recorded
A And M ReservoirSweetwaterNo recent samples30 µg/LNo recent samplesNo recent samplesNot recorded
Scotty LakeSweetwaterNo recent samples900 µg/LNo recent samplesNo recent samplesNot recorded
Stevens Draw ReservoirSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Cow Creek ReservoirSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Monument LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Frewen LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Red LakesSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Eden ReservoirSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
McKay LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bush LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Buffalo Hump LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Brannan ReservoirSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hay ReservoirSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lost Creek LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mud LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hansen LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mud Springs LakeSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mahoney LakesSweetwaterNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mahoney LakesSweetwaterNo 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 Wyoming

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Browse every Wyoming 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 Wyoming Department of Environmental Quality. See data sources.