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

Tuolumne County Lake Quality

California, 62 lakes, measured by SWRCB

Tuolumne County in California carries 62 monitored lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. The 62 monitored lakes in Tuolumne 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 Tuolumne County

Top-rated places to stay near Tuolumne County

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

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Quick Answers for Tuolumne County

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

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

All Lakes in Tuolumne County

62 lakes · 0 ranked on readings, 62 without enough sampling0 lakes ranked on readings · 62 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Ardeth LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Avonelle LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bear LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Beardsley LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bearup LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Benson LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bigelow LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Boundary LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Branigan LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Buck LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Cherry LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Dog LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Don Pedro ReservoirTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samples490 ftNot recorded
Donnell LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Dorothy LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Edith LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Elizabeth LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Emigrant LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Emigrant Meadow LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Evelyn LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Helen LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hetch Hetchy ReservoirTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Huckleberry LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hyatt LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Ireland LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Kennedy LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Kibbie LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake EleanorTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake VernonTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Laurel LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Leighton LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lertora LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Little Bear LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Long LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lyons ReservoirTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Many Island LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mary LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Maxwell LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Moccasin ReservoirTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Otter LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Peninsula LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Phoenix ReservoirTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pine Mountain LakeTuolumne18 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pinecrest LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pingree LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Priest ReservoirTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Red LakeTuolumneNo recent samples75 µg/LNo recent samplesNo recent samplesNo recent samplesNot recorded
Relief ReservoirTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Rock Island LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Rodgers LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Roosevelt LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Shallow LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Smedberg LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Snow LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Spiller LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Spotted Fawn LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Tilden LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Twin LakesTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Upper McCabe LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Virginia LakeTuolumneNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Wilma LakeTuolumneNo 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.