Where is Fish Lake Reservoir?

Fish Lake Reservoir 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 Fish Lake Reservoir?

Fish Lake Reservoir has a maximum depth of 36 feet. The lake covers 3168 acres.

Are there boat ramps on Fish Lake Reservoir?

Fish Lake Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include High Banks (North), Fish Lake (South). Public access is listed as yes.

Can I fish at Fish Lake Reservoir?

Fish Lake Reservoir has 2 documented boat landings 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 Reservoir

St. Louis County, Minnesota3,168 acresView map Directions

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

Max depth

36 ft

Bathymetric survey

Area

3,168 acres

Surface area

Shoreline

36.6 mi

Measured length

Impaired · Mercury
36 ft max depth
Public access

See the measurements Directions Where to stay

Fish Lake Reservoir in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 36 ft. Surface area: 3168 acres.

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Fish Lake Reservoir is a 3,168-acre lake in St. Louis County, Minnesota with a maximum depth of 36 feet. Limited fish-species data available. Public access is available with 2 public boat landings.

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

What Fish Lake Reservoir is good for

From access and monitoring records, not editorial picks.

Boat launch2 documented ramps
Deep water36 ft surveyed max depth
Big water3,168 acres

Swimming conditions

No reading

Not rated

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

Whether Fish Lake Reservoir 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 Reservoir

These are the measurements Minnesota PCA publishes for Fish Lake Reservoir, 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 Reservoir

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

Lake Details

Max depth

36 ft

Surface area

3,168 acres

Shoreline

36.6 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

High Banks (North)Public
Fish Lake (South)Public

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 Reservoir

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

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Fishing Fish Lake Reservoir

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

EPA Impairment Status

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

Causes of impairment

MercuryPFAS

Designated uses not supporting: Fish consumption.

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

Source: EPA ATTAINS assessment unit MN69-0491-01 · Official waterbody report

Nearby Lakes in St. Louis County

Hunter Lake2.8 miView →Caribou Lake10.5 ft clear2.8 miView →Side Lake5.2 ft clear2.6 miView →Bergen Lake4.3 miView →Cooks Lake4.9 miView →Pike Lake18 ft clear5.1 miView →

Frequently asked questions about Fish Lake Reservoir

Where is Fish Lake Reservoir?: Fish Lake Reservoir 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 Fish Lake Reservoir?: Fish Lake Reservoir in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 36 ft. Surface area: 3168 acres.
Is Fish Lake Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Fish Lake Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pFAS. Check local advisories before you swim.
How deep is Fish Lake Reservoir?: Fish Lake Reservoir has a maximum depth of 36 feet. The lake covers 3168 acres.
Are there boat ramps on Fish Lake Reservoir?: Fish Lake Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include High Banks (North), Fish Lake (South). Public access is listed as yes.
Can I fish at Fish Lake Reservoir?: Fish Lake Reservoir has 2 documented boat landings 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.