Fish 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 Fish Lake?

Fish Lake has a maximum depth of 17 feet. The lake covers 476 acres.

Are there boat ramps on Fish Lake?

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

Can I fish at Fish Lake?

Fish 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.

Fish Lake

Otter Tail County, Minnesota476 acresView map Directions

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

Max depth

17 ft

Bathymetric survey

Area

476 acres

Surface area

Shoreline

11.6 mi

Measured length

Impaired · Mercury
17 ft max depth
Public access

See the measurements Directions Where to stay

Fish Lake in Otter Tail County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 17 ft. Surface area: 476 acres.

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Fish Lake is a 476-acre lake in Otter Tail County, Minnesota with a maximum depth of 17 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 Fish Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Recreation use not supported

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

Whether Fish 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 Fish Lake

These are the measurements Minnesota PCA publishes for Fish 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 Fish Lake

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

Lake Details

Max depth

17 ft

Surface area

476 acres

Shoreline

11.6 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

Fish 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 Fish Lake

Compare lakeside cabins, hotels, and vacation rentals near Fish 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 Fish Lake

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

EPA Impairment Status

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

Causes of impairment

MercuryNutrients (phosphorus, nitrogen)

Designated uses not supporting: Fish consumption, Recreation.

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

Source: EPA ATTAINS assessment unit MN56-0066-00 · Official waterbody report

Nearby Lakes in Otter Tail County

Twin Lakes0.9 miView →Twin Lakes1.1 miView →Nelson Lake10 ft clear · Mesotrophic1.9 miView →Miller Lake1.9 miView →Reese Lake1.9 miView →Clarno Lake1.9 miView →

Frequently asked questions about Fish Lake

Where is Fish Lake?: Fish 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 Fish Lake?: Fish Lake in Otter Tail County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 17 ft. Surface area: 476 acres.
Is Fish Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Fish Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Fish Lake?: Fish Lake has a maximum depth of 17 feet. The lake covers 476 acres.
Are there boat ramps on Fish Lake?: Fish Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Fish Lake. Public access is listed as yes.
Can I fish at Fish Lake?: Fish 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.