Where is Lake McClure?

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

Are there boat ramps on Lake McClure?

Lake McClure has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake McClure - Barrett Cove. Public access is listed as yes.

Can I fish at Lake McClure?

Lake McClure has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by California's fish and wildlife agency, so check its current regulations before you go.

Lake McClure

Mariposa County, California4,827 acresView map Directions

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

Area

4,827 acres

Surface area

Shoreline

90.9 mi

Measured length

Impaired · Mercury
Public access
Limited data

See the measurements Directions Where to stay

Lake McClure in Mariposa County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 4827 acres.

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Lake McClure is a 4,827-acre lake in Mariposa County, California. Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Lake McClure is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Big water4,827 acres

Swimming conditions

No reading

Limited data

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

Whether Lake McClure 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 Lake McClure

These are the measurements SWRCB publishes for Lake McClure, 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 Lake McClure

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

Lake Details

Surface area

4,827 acres

Shoreline

90.9 mi

Public access

Yes

Listed by SWRCB

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

Recreation & Access

Boat Landings

Yes

Public Access

Lake McClure - Barrett CovePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Lake McClure

Compare lakeside cabins, hotels, and vacation rentals near Lake McClure in Mariposa 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.

Top-rated places to stay near Lake McClure

Prices for Oct 16–18, 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.

Follow Lake McClure’s readings

Email me when new measurements post for this lake. Updates stay free.

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Fishing Lake McClure

→ Lake McClure fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Lake McClure 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 CAL5372200020020430110127 · Official waterbody report

Nearby Lakes in Mariposa County

Ostrander Lake—View →May Lake—View →Tenaya Lake—View →Merced Lake—View →Cathedral Lakes—View →Emeric Lake—View →

Frequently asked questions about Lake McClure

Where is Lake McClure?: Lake McClure is a lake in Mariposa County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Lake McClure?: Lake McClure in Mariposa County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 4827 acres.
Is Lake McClure safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake McClure is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Are there boat ramps on Lake McClure?: Lake McClure has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake McClure - Barrett Cove. Public access is listed as yes.
Can I fish at Lake McClure?: Lake McClure has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by California's fish and wildlife agency, so check its current regulations before you go.