Minnesota · DNR survey data
Olson Lake
Olson Lake covers 34 acres in Cook County, running to 18 feet, last surveyed by the DNR in 2025. 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
No recent survey rating.
Last recorded in the 2000 survey and not seen since.
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 | Rainbow Trout | 1,500 fingerlings |
| 2024 | Rainbow Trout | 1,500 fingerlings |
| 2023 | Rainbow Trout | 1,500 fingerlings |
| 2022 | Rainbow Trout | 1,500 fingerlings |
| 2021 | Rainbow Trout | 1,500 fingerlings |
| 2020 | Rainbow Trout | 1,511 fingerlings |
| 2019 | Rainbow Trout | 1,500 fingerlings |
| 2018 | Rainbow Trout | 2,500 fingerlings |
| 2017 | Rainbow Trout | 1,500 fingerlings |
| 2016 | Rainbow Trout | 1,500 fingerlings |
Recent reports
Olson Lake fishing reports
Recent reports on Olson 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
- Two Island Lake · 754 ac · 1 mi
- Pit · 26 ac · 1.7 mi
- Thompson Lake · 18 ac · 2.4 mi
- Bath Lake · 28 ac · 2.5 mi
- Junco Lake · 41 ac · 2.5 mi
- Mit Lake · 87 ac · 2.6 mi
- Thrasher Lake · 24 ac · 2.9 mi
- Devil Track Lake · 1,876 ac · 2.9 mi
Quick answers
Frequently asked questions
Is there a depth map for Olson Lake?
The Minnesota DNR has not published bathymetry for Olson Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Olson Lake?
The most recent DNR survey (2025) recorded walleye, brook trout, rainbow trout.
Is Olson Lake stocked?
Yes. The DNR stocked rainbow trout in 2025; the stocking table on this page lists every year back to 2016.
When was Olson Lake last surveyed?
The Minnesota DNR last surveyed Olson Lake in 2025, the most recent of 9 surveys on record.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .