Big Portage Lake

Details

DNR lake ID

11030800

County

Cass

Surface area

902 acres

Maximum depth

23 feet

Shallow water (littoral) area

901 acres, 100% of the lake

Shoreline

7.2 miles

Average water clarity

6.6 feet (Secchi disk, 4 readings)

Latest DNR fish survey

July 2023, standard survey

Surveys on record

8, since 1987

Game fish caught in the 2023 survey

bluegill 451, black crappie 262, pumpkinseed 259, northern pike 94, yellow perch 54, largemouth bass 15, walleye 12, hybrid sunfish 9

Fish species recorded

black crappie, bluegill, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, yellow perch, and 9 other species

Stocked in 2025

walleye fry (901,710)

Stocked in 2024

walleye fry (904,365)

Stocked in 2023

walleye fry (901,800)

Stocking years on record

7 of the last 10 (2016 to 2025)

Public accesses (DNR survey record)

1, owned by DNR

Special regulation, Including connected waters, Rice and Deep Portage Lakes

Crappie: Daily limit five.

Special regulation, Including connected waters, Rice and Deep Portage Lakes

Sunfish: Daily limit 10.

Fish consumption

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

Size

500 to 1,999 acres

Deepest point

15 to 29 feet

Public access

Yes

Stocked in the last 3 years

Yes

Sources

• Minnesota DNR LakeFinder
  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.