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

Legg Lake

Los Angeles County, California42 acresView map Directions

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

Area

42 acres

Surface area

Impaired · Algal growth
Limited data

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Legg Lake in Los Angeles County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 42 acres.

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Legg Lake is a 42-acre lake in Los Angeles 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. Legg Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.

Whether Legg 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 Legg Lake

These are the measurements SWRCB publishes for Legg 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 Legg Lake

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

Lake Details

Surface area

42 acres

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

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Stays near Legg Lake

Compare lakeside cabins, hotels, and vacation rentals near Legg Lake in Los Angeles 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 Legg Lake

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

EPA Impairment Status

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

Causes of impairment

Algal growthMercury

Designated uses not supporting: Aquatic life, Fish consumption, Other.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit CAL4053100019980917155807 · Official waterbody report

Nearby Lakes in Los Angeles County

Garvey Reservoir3.5 miView →Silver Lake Reservoir12.6 miView →Cogswell Reservoir15.4 miView →Morris Reservoir15.1 miView →Puddingstone Reservoir15 miView →San Gabriel Reservoir—View →

Frequently asked questions about Legg Lake

Where is Legg Lake?: Legg Lake is a lake in Los Angeles County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Legg Lake?: Legg Lake in Los Angeles County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 42 acres.
Is Legg Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Legg Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.