Slim Lake

Details

DNR lake ID

69018100

County

St. Louis

Surface area

312 acres

Maximum depth

49 feet

Shallow water (littoral) area

87 acres, 28% of the lake

Shoreline

8.2 miles

Average water clarity

12.4 feet (Secchi disk, 4 readings)

Latest DNR fish survey

August 2025, targeted survey

Surveys on record

9, since 1982

Fish species recorded

green sunfish, northern pike, smallmouth bass, walleye, yellow perch, and 4 other species

Stocked in 2024

walleye fry (87,000)

Stocked in 2023

walleye fry (87,000)

Stocked in 2022

walleye fry (87,000)

Stocking years on record

7 of the last 10 (2016 to 2024)

Slim Lake Public Water Access Site

carry-in, run by U.S. Forest Service

Eating advice, general populations

cisco: all sizes - 2 servings/week; northern pike: shorter than 22" - 1 serving/week; northern pike: 22" or longer - 1 serving/month; walleye: shorter than 16" - 1 serving/week; walleye: 16" or longer - 1 serving/month

Size

100 to 499 acres

Deepest point

30 to 59 feet

Public access

Yes

Stocked in the last 3 years

Yes

Lake-specific eating advice

Yes

Sources

• Minnesota DNR LakeFinder
  Checked September 24, 2026
• Minnesota DNR Public Water Access Sites
  Checked September 24, 2026
• Minnesota Department of Health fish consumption guidelines
  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.