Diamond Lake

Details

DNR lake ID

11039600

County

Cass

Surface area

77 acres

Maximum depth

31 feet

Shallow water (littoral) area

62 acres, 81% of the lake

Shoreline

1.9 miles

Average water clarity

12.7 feet (Secchi disk, 10 readings)

Nearest town (DNR)

Walker

Latest DNR fish survey

June 2021, standard survey

Surveys on record

18, since 1978

Game fish caught in the 2021 survey

rainbow trout 206

Fish species recorded

black crappie, muskellunge, rainbow trout, walleye, yellow perch, and 10 other species

Stocked in 2025

rainbow trout yearlings (100); rainbow trout adults (102)

Stocked in 2024

rainbow trout yearlings (1,500); rainbow trout fingerlings (7,000)

Stocked in 2023

rainbow trout fingerlings (14,000)

Stocking years on record

10 of the last 10 (2016 to 2025)

Diamond Lake Public Water Access Site

trailer launch, natural ramp, 3 trailer spaces, run by U.S. Forest Service

Fish consumption

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

Size

Under 100 acres

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.