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

How deep is Iowa Lake?

Iowa Lake has a maximum depth of 6.6 feet. The lake covers 670 acres.

Are there boat ramps on Iowa Lake?

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

Can I fish at Iowa Lake?

Iowa 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.

Iowa Lake

Martin County, Minnesota670 acresView map Directions

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

Max depth

6.6 ft

Bathymetric survey

Area

670 acres

Surface area

Shoreline

8.9 mi

Measured length

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

See the measurements Directions Where to stay

Iowa Lake in Martin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 6.6 ft. Surface area: 670 acres.

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Iowa Lake is a 670-acre lake in Martin 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 Iowa 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. Iowa Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Iowa 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 Iowa Lake

These are the measurements Minnesota PCA publishes for Iowa 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 Iowa Lake

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

Lake Details

Max depth

6.6 ft

Surface area

670 acres

Shoreline

8.9 mi

Public access

Yes

Listed by Minnesota PCA

Recreation & Access

Boat Landings

Yes

Public Access

Iowa 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 Iowa Lake

Compare lakeside cabins, hotels, and vacation rentals near Iowa Lake in Martin 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 Iowa Lake

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Follow Iowa Lake’s readings

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Fishing Iowa Lake

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

EPA Impairment Status

Iowa 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 MN46-0049-00 · Official waterbody report

Nearby Lakes in Martin County

South Silver Lake3 ft clear0.9 miView →North Silver Lake4.9 ft clear · Eutrophic2 miView →North Silver Lake2.2 miView →Willmert Lake3.3 ft clear · Eutrophic4.3 miView →Swag Lake4.2 miView →Mud Lake1.6 ft clear · Hypereutrophic—View →

Frequently asked questions about Iowa Lake

Where is Iowa Lake?: Iowa Lake is a lake in Martin County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Iowa Lake?: Iowa Lake in Martin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 6.6 ft. Surface area: 670 acres.
Is Iowa Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Iowa 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 Iowa Lake?: Iowa Lake has a maximum depth of 6.6 feet. The lake covers 670 acres.
Are there boat ramps on Iowa Lake?: Iowa Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Iowa Lake. Public access is listed as yes.
Can I fish at Iowa Lake?: Iowa 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.