Minnesota · DNR survey data
Thompson Lake
Thompson Lake covers 18 acres in Cook County, running to 12 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
Last recorded in the 1986 survey and not seen since.
Rainbow troutStocked · 2025Present, stockedPresent and managed by the DNR.
Present and managed by the DNR.
Lengths measured · 17 fish
Recent · 2024Lengths measured · 17 fish
2024Lengths measured · 25 fish
2015Lengths measured · 34 fish
2012Lengths measured · 2 fish
2007Only 2 fish measured that year — too few to read as a shape.
Present and managed by the DNR.
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.
DNR stocking records
Stocking history
| Year | Species | Stocked |
|---|---|---|
| 2025 | Brown Trout | 1,000 fingerlings |
| 2025 | Rainbow Trout | 1,050 yearlings |
| 2024 | Rainbow Trout | 1,050 yearlings |
| 2023 | Brown Trout | 1,000 fingerlings |
| 2023 | Rainbow Trout | 1,050 yearlings |
| 2022 | Rainbow Trout | 1,050 yearlings |
| 2021 | Brown Trout | 1,000 fingerlings |
| 2021 | Rainbow Trout | 1,050 yearlings |
| 2020 | Rainbow Trout | 1,050 yearlings |
| 2019 | Brown Trout | 1,000 fingerlings |
| 2019 | Rainbow Trout | 1,050 yearlings |
| 2018 | Rainbow Trout | 1,050 yearlings |
Stocking records before 2018 omitted.
Recent reports
Thompson Lake fishing reports
Recent reports on Thompson 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
- Olson Lake · 34 ac · 2.4 mi
- McDonald Lake · 86 ac · 2.6 mi
- Devil Track Lake · 1,876 ac · 2.8 mi
- Two Island Lake · 754 ac · 3 mi
- Bath Lake · 28 ac · 3.9 mi
- Pit · 26 ac · 4.1 mi
- Thrasher Lake · 24 ac · 4.2 mi
- Thrush Lake · 15 ac · 4.4 mi
Quick answers
Frequently asked questions
Is there a depth map for Thompson Lake?
The Minnesota DNR has not published bathymetry for Thompson Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Thompson Lake?
The most recent DNR survey (2024) recorded brook trout, rainbow trout, brown trout.
Is Thompson Lake stocked?
Yes. The DNR stocked brown trout and rainbow trout in 2025; the stocking table on this page lists every year back to 2018.
When was Thompson Lake last surveyed?
The Minnesota DNR last surveyed Thompson 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 .