Where is Long Lost Lake?

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

How deep is Long Lost Lake?

Long Lost Lake has a maximum depth of 53 feet. The lake covers 376 acres.

Are there boat ramps on Long Lost Lake?

Long Lost Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Long Lost Lake. Public access is listed as yes.

Can I fish at Long Lost Lake?

Long Lost Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.

Long Lost Lake

Clearwater County, Minnesota376 acresView map Directions

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

Max depth

53 ft

Bathymetric survey

Area

376 acres

Surface area

Shoreline

10.7 mi

Measured length

Impaired · Mercury
53 ft max depth
Public access

See the measurements Directions Where to stay

Long Lost Lake in Clearwater County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 53 ft. Surface area: 376 acres.

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Long Lost Lake is a 376-acre lake in Clearwater County, Minnesota with a maximum depth of 53 feet. Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Long Lost Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water53 ft surveyed max depth

Swimming conditions

No reading

Not rated

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

Whether Long Lost 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 Long Lost Lake

These are the measurements Minnesota PCA publishes for Long Lost 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 Long Lost Lake

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

Lake Details

Max depth

53 ft

Surface area

376 acres

Shoreline

10.7 mi

Public access

Yes

Listed by Minnesota PCA

The depth above comes from a bathymetric survey of this lake, not from a regional estimate.

Recreation & Access

Boat Landings

Yes

Public Access

Long Lost LakePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

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Stays near Long Lost Lake

Compare lakeside cabins, hotels, and vacation rentals near Long Lost Lake in Clearwater 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 Long Lost Lake

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Fishing Long Lost Lake

→ Long Lost Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Long Lost 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 MN15-0068-00 · Official waterbody report

Nearby Lakes in Clearwater County

Long Lost Lake22 ft clear · Oligotrophic0.6 miView →Glanders Lake0.7 miView →Little Rock Lake15.1 ft clear · Oligotrophic2 miView →Cox Lake14 ft clear2.6 miView →Pickerel Lake16.1 ft clear · Oligotrophic3.5 miView →Mckenzie Lake12.6 ft clear · Oligotrophic—View →

Frequently asked questions about Long Lost Lake

Where is Long Lost Lake?: Long Lost Lake is a lake in Clearwater County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Long Lost Lake?: Long Lost Lake in Clearwater County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 53 ft. Surface area: 376 acres.
Is Long Lost Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Long Lost Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Long Lost Lake?: Long Lost Lake has a maximum depth of 53 feet. The lake covers 376 acres.
Are there boat ramps on Long Lost Lake?: Long Lost Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Long Lost Lake. Public access is listed as yes.
Can I fish at Long Lost Lake?: Long Lost Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.