Iowa Lake

Details

DNR lake ID

46004900

County

Martin

Surface area

705 acres

Maximum depth

9 feet

Shallow water (littoral) area

478 acres, 68% of the lake

Shoreline

12.4 miles

Average water clarity

0.7 feet (Secchi disk, 2 readings)

Border water

Shared with Iowa

Nearest town (DNR)

Fairmont

Latest DNR fish survey

July 2023, standard survey

Surveys on record

6, since 1990

Game fish caught in the 2023 survey

black crappie 188, walleye 53, yellow perch 52, bluegill 13, orangespotted sunfish 9, channel catfish 4, white crappie 3, white bass 1

Fish species recorded

black crappie, bluegill, channel catfish, hybrid sunfish, largemouth bass, northern pike, orangespotted sunfish, walleye, white bass, white crappie, yellow perch, and 9 other species

Stocked in 2025

walleye fry (366,128)

Stocked in 2022

northern pike fry (71,091)

Stocked in 2021

northern pike adults (50); walleye fry (366,000)

Stocking years on record

4 of the last 10 (2018 to 2025)

Iowa Lake Public Water Access Site

trailer launch, concrete slab ramp, 1 dock, 10 trailer spaces, run by Martin County

Fish consumption

Follow the statewide guidelines; fish from this lake have not been tested

Size

500 to 1,999 acres

Deepest point

Under 15 feet

Public access

Yes

Stocked in the last 3 years

Yes

Sources

• Minnesota DNR LakeFinder
  Checked September 24, 2026
• Minnesota DNR Public Water Access Sites
  Checked September 24, 2026

Survey catches show what DNR nets and electrofishing found on the survey date, not how the fishing is today. Check the current regulations and the Department of Health advice before you keep fish, and confirm access conditions before you tow a boat.