Minnesota · DNR survey data
Lannon Lake
Lannon Lake covers 197 acres in Big Stone County, running to 4 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.
DNR survey data
Fish species
WalleyeStocked · 2025One of the best around60per gill net9"Typical27"Biggest
Lengths measured · 79 fish
Recent · 2024Lengths measured · 79 fish
2024Lengths measured · 69 fish
2017Lengths measured · 3 fish
2014Only 3 fish measured that year — too few to read as a shape.
Lengths measured · 595 fish
2004Rates 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.
DNR stocking records
Stocking history
| Year | Species | Stocked |
|---|---|---|
| 2025 | Walleye | 100,000 fry |
| 2024 | Walleye | 100,000 fry |
| 2023 | Walleye | 100,000 fry |
| 2022 | Walleye | 100,000 fry |
| 2021 | Walleye | 100,000 fry |
| 2019 | Walleye | 100,000 fry |
| 2018 | Walleye | 100,000 fry |
| 2017 | Walleye | 100,000 fry |
| 2016 | Walleye | 100,592 fry |
Recent reports
Lannon Lake fishing reports
Recent reports on Lannon 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.
Within 30 miles
Nearby lakes
- East Toqua Lake · 437 ac · 1.1 mi
- Lone Tree Slough Lake · 90 ac · 2.2 mi
- Swenson Lake · 204 ac · 10.3 mi
- Big Stone Lake · 11,984 ac · 13.1 mi
- Long Tom Lake · 147 ac · 16.1 mi
- Lake Hattie · 459 ac · 17.1 mi
- Traverse Lake · 10,849 ac · 17.9 mi
- Long Lake · 395 ac · 18.7 mi
Quick answers
Frequently asked questions
Is there a depth map for Lannon Lake?
The Minnesota DNR has not published bathymetry for Lannon Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Lannon Lake?
The most recent DNR survey (2024) recorded walleye, northern pike, crappie, yellow perch.
Is Lannon Lake stocked?
Yes. The DNR stocked walleye in 2025; the stocking table on this page lists every year back to 2016.
When was Lannon Lake last surveyed?
The Minnesota DNR last surveyed Lannon Lake in 2024, the most recent of 4 surveys on record.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .