Lynch Lake is a lake in Washington County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.

How deep is Lynch Lake?

Lynch Lake has a maximum depth of 16.4 feet and an average depth of 6.6 feet. The lake covers 32 acres.

Lynch Lake

Washington County, Minnesota32 acresView map Directions

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

Max depth

16.4 ft

Bathymetric survey

Area

32 acres

Surface area

Shoreline

1.6 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)
16 ft max depth

See the measurements Directions Where to stay

Lynch Lake in Washington County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 16.4 ft. Surface area: 32 acres.

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Lynch Lake is a 32-acre lake in Washington County, Minnesota with a maximum depth of 16 feet (7-foot average).

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. Methodology: how these readings are compared.

Swimming conditions

No reading

Recreation use not supported

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

Whether Lynch Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Lynch Lake

These are the measurements Minnesota PCA publishes for Lynch 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. TSI undefined.

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

Lake Details

Max depth

16.4 ft

Average depth

6.6 ft

Surface area

32 acres

Shoreline

1.6 mi

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Stays near Lynch Lake

Compare lakeside cabins, hotels, and vacation rentals near Lynch Lake in Washington County, Minnesota — 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 Lynch Lake

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

EPA Impairment Status

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

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Recreation.

Source: EPA ATTAINS assessment unit MN82-0042-00 · Official waterbody report

Nearby Lakes in Washington County

Lynch Lake5.8 ft clear · Eutrophic0.3 miView →Bass Lake6.5 ft clear · Eutrophic1.3 miView →Goggins Lake1.4 miView →Maple Marsh Lake1.9 miView →Bass Lake1.7 miView →Turtle Lake—View →

Frequently asked questions about Lynch Lake

Where is Lynch Lake?: Lynch Lake is a lake in Washington County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Lynch Lake?: Lynch Lake in Washington County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 16.4 ft. Surface area: 32 acres.
Is Lynch Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lynch Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Lynch Lake?: Lynch Lake has a maximum depth of 16.4 feet and an average depth of 6.6 feet. The lake covers 32 acres.