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

Mono Lake

Mono County, California45,124 acresView map Directions

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

Area

45,124 acres

Surface area

Shoreline

38.4 mi

Measured length

Impaired · Salinity / chlorides
Limited data

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Mono Lake in Mono County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 45124 acres.

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Mono Lake is a 45,124-acre lake in Mono County, California.

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

What Mono Lake is good for

From access and monitoring records, not editorial picks.

Big water45,124 acres

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Mono Lake is listed impaired under Clean Water Act §303(d) (IR 4B) for salinity / chlorides. Check local advisories before you swim.

Whether Mono Lake 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 Mono Lake

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

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

Lake Details

Surface area

45,124 acres

Shoreline

38.4 mi

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

Stays via Stay22

Stays near Mono Lake

Compare lakeside cabins, hotels, and vacation rentals near Mono Lake in Mono 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 Mono Lake

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Follow Mono Lake’s readings

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Fishing Mono Lake

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

EPA Impairment Status

Mono Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4B).

Causes of impairment

Salinity / chlorides

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit CAL6010008019980806094326 · Official waterbody report

Nearby Lakes in Mono County

Grant Lake14.2 miView →Walker Lake14.2 miView →June Lake16.2 miView →Dry Lake—View →Gull Lake—View →Lundy Lake14.4 miView →

Frequently asked questions about Mono Lake

Where is Mono Lake?: Mono Lake is a lake in Mono County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Mono Lake?: Mono Lake in Mono County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 45124 acres.
Is Mono Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Mono Lake is listed impaired under Clean Water Act §303(d) (IR 4B) for salinity / chlorides. Check local advisories before you swim.