Minnesota · DNR survey data
Twenty-one Lake
Twenty-one Lake covers 142 acres in Otter Tail County, running to 47 feet, last surveyed by the DNR in 2018. 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.
DNR survey data
Fish species
Largemouth bassPresent4.4per trap net13"Typical16"Biggest
Lengths measured · 51 fish
Recent · 2018Lengths measured · 51 fish
2018Lengths measured · 42 fish
2010Lengths measured · 46 fish
2004Lengths measured · 10 fish
2001Northern pikeFair numbers7.5per gill net18"Typical36"Biggest
Lengths measured · 53 fish
Recent · 2018Lengths measured · 53 fish
2018Lengths measured · 93 fish
2010Lengths measured · 89 fish
2004Lengths measured · 64 fish
2001BluegillFair numbers33.9per trap net7"Typical10"Biggest
Lengths measured · 309 fish
Recent · 2018Lengths measured · 309 fish
2018Lengths measured · 313 fish
2010Lengths measured · 193 fish
2004Lengths measured · 100 fish
2001CrappieJust a few3.1per trap net11"Typical13"Biggest
Lengths measured · 30 fish
Recent · 2018Lengths measured · 30 fish
2018Lengths measured · 115 fish
2010Lengths measured · 16 fish
2004Lengths measured · 14 fish
2001No recent survey rating.
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
Twenty-one Lake fishing reports
Recent reports on Twenty-one 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.
Public water access
Getting on the water
- Twentyone Lake, Maplewood State Park (carry-in)
Within 30 miles
Nearby lakes
- Anderson Lake · 89 ac · 2.5 mi
- Beers Lake · 317 ac · 2.6 mi
- South Lida Lake · 777 ac · 2.8 mi
- Fladmark Lake · 59 ac · 2.9 mi
- Heilberger Lake · 221 ac · 4.5 mi
- West Silent Lake · 347 ac · 5.6 mi
- Long Lake · 767 ac · 5.7 mi
- North Lida Lake · 5,523 ac · 6.1 mi
Quick answers
Frequently asked questions
Is there a depth map for Twenty-one Lake?
The Minnesota DNR has not published bathymetry for Twenty-one Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Twenty-one Lake?
The most recent DNR survey (2018) recorded largemouth bass, northern pike, bluegill, crappie, yellow perch.
Does Twenty-one Lake have a public access?
Yes. Twenty-one Lake has one public access site: Twentyone Lake, Maplewood State Park (carry-in).
Is Twenty-one Lake stocked?
No stocking is on record for Twenty-one Lake in the DNR's stocking database.
When was Twenty-one Lake last surveyed?
The Minnesota DNR last surveyed Twenty-one Lake in 2018, the most recent of 6 surveys on record. A survey that old is a starting point, not a current reading.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .