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

How deep is Mills Lake?

Mills Lake has a maximum depth of 6.6 feet. The lake covers 232 acres.

Are there boat ramps on Mills Lake?

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

Can I fish at Mills Lake?

Mills 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.

Mills Lake

Blue Earth County, Minnesota232 acresView map Directions

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

Max depth

6.6 ft

Bathymetric survey

Area

232 acres

Surface area

Shoreline

2.4 mi

Measured length

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

See the measurements Directions Where to stay

Mills Lake in Blue Earth County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 6.6 ft. Surface area: 232 acres.

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Mills Lake is a 232-acre lake in Blue Earth County, Minnesota with a maximum depth of 7 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 Mills 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. Mills Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Mills 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 Mills Lake

These are the measurements Minnesota PCA publishes for Mills 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 Mills Lake

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

Lake Details

Max depth

6.6 ft

Surface area

232 acres

Shoreline

2.4 mi

Public access

Yes

Listed by Minnesota PCA

Recreation & Access

Boat Landings

Yes

Public Access

Mills LakePublic

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

Stays via Stay22

Stays near Mills Lake

Compare lakeside cabins, hotels, and vacation rentals near Mills Lake in Blue Earth 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 Mills Lake

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Fishing Mills Lake

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

EPA Impairment Status

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

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Recreation.

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

Source: EPA ATTAINS assessment unit MN07-0097-00 · Official waterbody report

Nearby Lakes in Blue Earth County

Loon Lake2 ft clear2 miView →Crystal Lake1.5 ft clear · Hypereutrophic3.3 miView →Lily Lake4.3 miView →Horseshoe Lake9.5 miView →Ida Lake—View →Porter Lake1.3 ft clear10.7 miView →

Frequently asked questions about Mills Lake

Where is Mills Lake?: Mills Lake is a lake in Blue Earth County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Mills Lake?: Mills Lake in Blue Earth County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 6.6 ft. Surface area: 232 acres.
Is Mills Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Mills Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Mills Lake?: Mills Lake has a maximum depth of 6.6 feet. The lake covers 232 acres.
Are there boat ramps on Mills Lake?: Mills Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Mills Lake. Public access is listed as yes.
Can I fish at Mills Lake?: Mills 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.