Long Lake

Details

DNR lake ID

11045400

County

Cass

Surface area

142 acres

Maximum depth

48 feet

Shallow water (littoral) area

77 acres, 54% of the lake

Shoreline

3.4 miles

Average water clarity

16.3 feet (Secchi disk, 2 readings)

Latest DNR fish survey

August 2025, standard survey

Surveys on record

6, since 1967

Game fish caught in the 2025 survey

rock bass 149, largemouth bass 64, hybrid sunfish 25, walleye 25, northern pike 24, yellow perch 22, pumpkinseed 5, green sunfish 3

Fish species recorded

green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, yellow perch, and 1 other species

Long Lake, Deerfield Public Water Access Site

trailer launch, concrete slab ramp, 6 trailer spaces, run by Cass County

Fish consumption

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

Size

100 to 499 acres

Deepest point

30 to 59 feet

Public access

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.