Lake Mary

Details

DNR lake ID

21009200

County

Douglas

Surface area

2,450 acres

Maximum depth

40 feet

Mean depth

17 feet

Shallow water (littoral) area

1,096 acres, 45% of the lake

Shoreline

11.7 miles

Average water clarity

5.9 feet (Secchi disk, 4 readings)

Nearest town (DNR)

Holmes City

Latest DNR fish survey

August 2025, standard survey

Surveys on record

15, since 1974

Game fish caught in the 2025 survey

bluegill 385, walleye 162, largemouth bass 76, northern pike 68, pumpkinseed 56, black crappie 43, rock bass 28, hybrid sunfish 9

Fish species recorded

black crappie, bluegill, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, yellow perch, and 23 other species

Stocked in 2024

walleye fry (1,644,000)

Stocked in 2023

walleye fingerlings (12,000)

Stocked in 2022

walleye fry (1,644,000)

Stocking years on record

8 of the last 10 (2016 to 2024)

Mary Lake (S) Public Water Access Site

trailer launch, concrete slab ramp, 1 dock, 17 trailer spaces, run by DNR Division of Parks and Trails

Mary Lake (N) Public Water Access Site

trailer launch, concrete slab ramp, 1 dock, 3 trailer spaces, run by DNR Division of Parks and Trails

Infested waters list

zebra mussel

Fish consumption

Follow the statewide guidelines; fish from this lake have been tested

Size

2,000 acres or more

Deepest point

30 to 59 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.