Where is Tulloch Reservoir?

Tulloch Reservoir is a lake in Calaveras County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.

Tulloch Reservoir

Calaveras County, California950 acresView map Directions

No nutrient or algae sampling on record from SWRCB for this lake.

Area

950 acres

Surface area

Shoreline

27.8 mi

Measured length

Impaired · Mercury
Limited data

See the measurements Directions Where to stay

Tulloch Reservoir in Calaveras County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 950 acres.

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Tulloch Reservoir is a 950-acre lake in Calaveras County, California.

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Tulloch Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.

Whether Tulloch Reservoir is safe to swim in today is a call for the California State Water Resources Control Board and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Tulloch Reservoir

These are the measurements SWRCB publishes for Tulloch Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data.

Ask about Tulloch Reservoir

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

950 acres

Shoreline

27.8 mi

No bathymetric survey has been published for Tulloch Reservoir, so its depth is not documented here.

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Stays near Tulloch Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Tulloch Reservoir in Calaveras County, California — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Tulloch Reservoir

→ Tulloch Reservoir fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Tulloch Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption, Other.

Source: EPA ATTAINS assessment unit CAL5342206320020501145743 · Official waterbody report

Nearby Lakes in Calaveras County

New Melones Lake6.5 miView →Salt Spring Valley Reservoir12.6 miView →New Hogan Lake—View →Emery Reservoir—View →Redhawk Lake—View →Pardee Resevoir A Cypress Point Lake—View →

Frequently asked questions about Tulloch Reservoir

Where is Tulloch Reservoir?: Tulloch Reservoir is a lake in Calaveras County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Tulloch Reservoir?: Tulloch Reservoir in Calaveras County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 950 acres.
Is Tulloch Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Tulloch Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.