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

How deep is Gun Lake?

Gun Lake has a maximum depth of 134.8 feet. The lake covers 185 acres.

Gun Lake

St. Louis County, Minnesota185 acresView map Directions

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

Max depth

134.8 ft

Bathymetric survey

Area

185 acres

Surface area

Shoreline

4.8 mi

Measured length

Impaired · Mercury
135 ft max depth

See the measurements Directions Where to stay

Gun Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 134.8 ft. Surface area: 185 acres.

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Gun Lake is a 185-acre lake in St. Louis County, Minnesota with a maximum depth of 135 feet.

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

What Gun Lake is good for

From access and monitoring records, not editorial picks.

Deep water134.8 ft surveyed max depth

Swimming conditions

No reading

Not rated

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

Whether Gun 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 Gun Lake

These are the measurements Minnesota PCA publishes for Gun 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 Gun Lake

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

Lake Details

Max depth

134.8 ft

Surface area

185 acres

Shoreline

4.8 mi

Stays via Stay22

Stays near Gun Lake

Compare lakeside cabins, hotels, and vacation rentals near Gun Lake in St. Louis 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.

Top-rated places to stay near Gun Lake

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Fishing Gun Lake

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

EPA Impairment Status

Gun Lake 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.

Source: EPA ATTAINS assessment unit MN69-0487-00 · Official waterbody report

Nearby Lakes in St. Louis County

Beartrack Lake11 ft clear1.4 miView →Little Beartrack Lake1.3 miView →Eugene Lake11.5 ft clear1.3 miView →Trillium Lake1.6 miView →Thumb Lake2.3 miView →Steep Lake1.8 miView →

Frequently asked questions about Gun Lake

Where is Gun Lake?: Gun Lake is a lake in St. Louis County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Gun Lake?: Gun Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 134.8 ft. Surface area: 185 acres.
Is Gun Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Gun Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Gun Lake?: Gun Lake has a maximum depth of 134.8 feet. The lake covers 185 acres.