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

Shasta County Lake Quality

California, 31 lakes, measured by SWRCB

There are 31 monitored lakes in Shasta County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 31 monitored lakes in Shasta 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 Shasta County

Top-rated places to stay near Shasta County

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

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Quick Answers for Shasta County

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

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

All Lakes in Shasta County

31 lakes · 0 ranked on readings, 31 without enough sampling0 lakes ranked on readings · 31 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Arthur LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bald Mountain ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Baum LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Cornaz LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Crystal LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Dry LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fall River LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Horr PondShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Horseshoe LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Iron Canyon ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Keswick ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lake BrittonShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lake EilerShastaNo recent samples16 µg/LNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake HelenShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake MargaretShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake McCloudShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lower Twin LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Manzanita LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samples35 ftNot recorded
McCumber ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
North Battle Creek ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pit Four ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pit Six ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Rainbow LakeShastaNo recent samplesNo recent samples1.3 µg/LNo recent samplesNo recent samplesNot recorded
Rising River LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Shasta LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samples517 ft✓ Public
Spring Creek ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Terry LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Tunnel ReservoirShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Upper Twin LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Whiskeytown LakeShastaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Woodridge LakeShastaNo 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.