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

How deep is Wall Lake?

Wall Lake has a maximum depth of 26.9 feet. The lake covers 720 acres.

Wall Lake

Otter Tail County, Minnesota720 acresView map Directions

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

Max depth

26.9 ft

Bathymetric survey

Area

720 acres

Surface area

Shoreline

6.6 mi

Measured length

Impaired · Mercury
27 ft max depth

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Wall Lake in Otter Tail County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 26.9 ft. Surface area: 720 acres.

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Wall Lake is a 720-acre lake in Otter Tail County, Minnesota with a maximum depth of 27 feet.

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

Swimming conditions

No reading

Not rated

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

Whether Wall 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 Wall Lake

These are the measurements Minnesota PCA publishes for Wall 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.

Ask about Wall Lake

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

Lake Details

Max depth

26.9 ft

Surface area

720 acres

Shoreline

6.6 mi

Stays via Stay22

Stays near Wall Lake

Compare lakeside cabins, hotels, and vacation rentals near Wall Lake in Otter Tail 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 Wall Lake

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

EPA Impairment Status

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

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

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

Source: EPA ATTAINS assessment unit MN56-0658-00 · Official waterbody report

Nearby Lakes in Otter Tail County

Wall Lake8.7 ft clear · Mesotrophic0.2 miView →Spring Lake1.7 miView →Glorvigan Lake1.7 miView →North Stang Lake1.9 miView →Bahle Lake2.8 miView →Moen Lake2.5 miView →

Frequently asked questions about Wall Lake

Where is Wall Lake?: Wall Lake is a lake in Otter Tail County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Wall Lake?: Wall Lake in Otter Tail County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 26.9 ft. Surface area: 720 acres.
Is Wall Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Wall Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Wall Lake?: Wall Lake has a maximum depth of 26.9 feet. The lake covers 720 acres.