Where is Decker Lake?

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

How deep is Decker Lake?

Decker Lake has a maximum depth of 10 feet. The lake covers 222 acres.

Are there boat ramps on Decker Lake?

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

Can I fish at Decker Lake?

Decker 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.

Decker Lake

Itasca County, Minnesota222 acresView map Directions

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

Max depth

10 ft

Bathymetric survey

Area

222 acres

Surface area

Shoreline

3.3 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)
10 ft max depth
Public access

See the measurements Directions Where to stay

Decker Lake in Itasca County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 10 ft. Surface area: 222 acres.

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Decker Lake is a 222-acre lake in Itasca County, Minnesota with a maximum depth of 10 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 Decker 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. Decker Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Decker 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 Decker Lake

These are the measurements Minnesota PCA publishes for Decker 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 Decker Lake

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

Lake Details

Max depth

10 ft

Surface area

222 acres

Shoreline

3.3 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

Decker 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 Decker Lake

Compare lakeside cabins, hotels, and vacation rentals near Decker Lake in Itasca 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 Decker Lake

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Fishing Decker Lake

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

EPA Impairment Status

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

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Recreation.

Source: EPA ATTAINS assessment unit MN31-0934-00 · Official waterbody report

Nearby Lakes in Itasca County

Coleman Lake0.6 miView →Marie Lake1.8 miView →Skimerhorn Lake2.3 miView →Damon Lake2.8 miView →Upper Twin Lakes4.1 miView →Morph Lake—View →

Frequently asked questions about Decker Lake

Where is Decker Lake?: Decker Lake is a lake in Itasca County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Decker Lake?: Decker Lake in Itasca County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 10 ft. Surface area: 222 acres.
Is Decker Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Decker Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Decker Lake?: Decker Lake has a maximum depth of 10 feet. The lake covers 222 acres.
Are there boat ramps on Decker Lake?: Decker Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Decker Lake. Public access is listed as yes.
Can I fish at Decker Lake?: Decker 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.