Minnesota · DNR survey data

Jack Lake

Jack Lake covers 142 acres in Cass County, running to 110 feet, last surveyed by the DNR in 2024. The Minnesota DNR has not published bathymetry for this lake, so there is no depth map here, just the survey record: what the nets held and how big it ran.

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DNR survey data

Fish species

Species
How many
Survey numbers
Lengths
Walleye
Just a few
0.2per gill net
Typical
28"Biggest
Largemouth bass
Just a few
8.8per hr (electrofishing)
Typical
7"Biggest
Northern pike
Present
0.7per trap net
Typical
23"Biggest
Bluegill
Just a few
8.8per trap net
3"Typical
7"Biggest
3"7"

Lengths measured · 79 fish

Recent · 2024
2"4"6"8"

Lengths measured · 79 fish

2024
2"4"6"8"

Lengths measured · 229 fish

2018
2"4"6"8"

Lengths measured · 280 fish

2007
2"4"6"8"

Lengths measured · 295 fish

1999
2"4"6"8"
Crappie
Just a few
0.2per trap net
Typical
7"Biggest
Yellow perch
Present
11.7per seine haul
6"Typical
7"Biggest
4"7"

Lengths measured · 11 fish

Recent · 2024
4"6"8"9"

Lengths measured · 11 fish

2024
4"6"8"9"

Lengths measured · 10 fish

2018
4"6"8"9"

Lengths measured · 1 fish

2007
4"6"8"9"

Only 1 fish measured that year — too few to read as a shape.

Lengths measured · 6 fish

1999
4"6"8"9"

Only 6 fish measured that year — too few to read as a shape.

Rock bass
Excellent numbers
1.6per seine haul
Typical
5"Biggest

Rates come from standard DNR survey gear (gill nets, trap nets, electrofishing), judged against statewide benchmarks for the same gear — which is why the same number of fish per net can read differently for two species. Where the standard gear can't count a species reliably, the page shows presence and size only. Typical is the middle fish of those measured. Open a row for the full length spread, survey by survey. You can read every number on this page without an app or an account.

Recent reports

Jack Lake fishing reports

Recent reports on Jack Lake from guides, tournaments and regular anglers. Anything posted in the last two weeks also bumps the matching spots on the live map, so you'll see a "matches a recent report" tag on them.

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Cass County reports

Public water access

Getting on the water

Within 30 miles

Nearby lakes

Quick answers

Frequently asked questions

Is there a depth map for Jack Lake?

The Minnesota DNR has not published bathymetry for Jack Lake, so this page carries the survey record instead: species, catch rates and stocking history.

What fish are in Jack Lake?

The most recent DNR survey (2024) recorded walleye, largemouth bass, northern pike, bluegill, crappie, yellow perch, rock bass.

Does Jack Lake have a public access?

Yes. Jack Lake has one public access site: Jack Lake (trailer launch).

Is Jack Lake stocked?

No stocking is on record for Jack Lake in the DNR's stocking database.

When was Jack Lake last surveyed?

The Minnesota DNR last surveyed Jack Lake in 2024, the most recent of 8 surveys on record.

Survey numbers are the Minnesota DNR's. How this site reads them →

Page updated .