Minnesota · DNR survey data

May Lake

May Lake covers 143 acres in Cass County, running to 59 feet, last surveyed by the DNR in 2022. 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
0.3per gill net
Typical
27"Biggest
Largemouth bass
Just a few
9.2per hr (electrofishing)
Typical
13"Biggest
Northern pike
Present
0.3per seine haul
Typical
20"Biggest
Bluegill
Just a few
21.2per trap net
4"Typical
10"Biggest
2"10"

Lengths measured · 191 fish

Recent · 2022
2"4"6"8"10"

Lengths measured · 191 fish

2022
2"4"6"8"10"

Lengths measured · 100 fish

2020
2"4"6"8"10"

Lengths measured · 316 fish

2013
2"4"6"8"10"

Lengths measured · 479 fish

2006
2"4"6"8"10"
Crappie
Just a few
1.1per trap net
9"Typical
10"Biggest
7"10"

Lengths measured · 10 fish

Recent · 2022
4"6"8"10"11"

Lengths measured · 10 fish

2022
4"6"8"10"11"

Lengths measured · 16 fish

2020
4"6"8"10"11"

Lengths measured · 12 fish

2013
4"6"8"10"11"

Lengths measured · 14 fish

2006
4"6"8"10"11"
Yellow perch
Present
1.8per seine haul
Typical
8"Biggest
Rock bass
One of the best around
3.3per trap net
7"Typical
10"Biggest
3"10"

Lengths measured · 30 fish

Recent · 2022
3"4"6"8"10"

Lengths measured · 30 fish

2022
3"4"6"8"10"

Lengths measured · 24 fish

2020
3"4"6"8"10"

Lengths measured · 27 fish

2013
3"4"6"8"10"

Lengths measured · 50 fish

2006
3"4"6"8"10"

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

May Lake fishing reports

Recent reports on May 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

Within 30 miles

Nearby lakes

Quick answers

Frequently asked questions

Is there a depth map for May Lake?

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

What fish are in May Lake?

The most recent DNR survey (2022) recorded walleye, largemouth bass, northern pike, bluegill, crappie, yellow perch, rock bass.

Is May Lake stocked?

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

When was May Lake last surveyed?

The Minnesota DNR last surveyed May Lake in 2022, the most recent of 12 surveys on record.

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

Page updated .