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

Mono County Lake Quality

California, 47 lakes, measured by SWRCB

There are 47 monitored lakes in Mono County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 47 monitored lakes in Mono County carry whatever clarity, phosphorus, and chlorophyll-a readings SWRCB 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 Mono County

Top-rated places to stay near Mono County

Prices for Oct 9–11, 4 adults. Change dates on the map below.

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

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Quick Answers for Mono County

Cleanest lakes in Mono County →Best swimming lakes in California →

Planning a trip? Check special fishing regulations for Agnew Lake — or check the official California fishing regulations.

All Lakes in Mono County

47 lakes · 0 ranked on readings, 47 without enough sampling0 lakes ranked on readings · 47 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Agnew LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Alger LakesMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Anna LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big Alkali LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big McGee LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big Valley LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Black LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bridgeport ReservoirMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bright Dot LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Constance LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Convict LakeMonoNo recent samples18 µg/LNo recent samplesNo recent samplesNo recent samplesNot recorded
Davis LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Dry LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
East LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Ellery LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fremont LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Gem LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Grant LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Green LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Gull LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Horseshoe LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
June LakeMonoNo recent samplesNo recent samples1.1 µg/LNo recent samplesNo recent samples✓ Public
Kirman LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake CrowleyMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake DorothyMonoNo recent samplesNo recent samplesNo recent samplesNo recent samples290 ftNot recorded
Lake GenevieveMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake GeorgeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lake MaryMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Leavitt LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Little Alkali LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lobdell LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lundy LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Marie LakesMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mono LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Oneida LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Peeler LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Poore LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Saddlebag LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Silver LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Summit LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Tioga LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Topaz LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samples91.9 ftNot recorded
Twin LakesMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Walker LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Waugh LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Weber LakeMonoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
West LakeMonoNo recent samplesNo 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 California

Plumas County

19 lakes

Amador County

12 lakes

Placer County

16 lakes

Butte County

16 lakes

Nevada County

35 lakes

Santa Clara County

13 lakes

Browse every California 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 California State Water Resources Control Board. See data sources.