Minnesota · DNR survey data

Thrasher Lake

Thrasher Lake covers 24 acres in Cook County, running to 27 feet, last surveyed by the DNR in 2021. 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
Brook trout
Present (last recorded 1998)

Last recorded in the 1998 survey and not seen since.

Lake trout
Present (last recorded 1983)

Last recorded in the 1983 survey and not seen since.

SplakeStocked · 2024
Present, stocked

Present and managed by the DNR.

6"19"

Lengths measured · 47 fish

Recent · 2021
4"5"10"15"20"23"

Lengths measured · 47 fish

2021
4"5"10"15"20"23"

Lengths measured · 51 fish

2016
4"5"10"15"20"23"

Lengths measured · 52 fish

2011
4"5"10"15"20"23"

Lengths measured · 17 fish

2007
4"5"10"15"20"23"

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

YearSpeciesStocked
2024Splake2,500 fingerlings
2023Splake3,001 fingerlings
2022Splake2,500 fingerlings
2021Splake3,700 fingerlings
2020Splake2,500 fingerlings
2019Splake2,500 fingerlings
2018Splake2,500 fingerlings
2016Splake2,500 fingerlings

Recent reports

Thrasher Lake fishing reports

Recent reports on Thrasher 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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Cook County reports

Within 30 miles

Nearby lakes

Quick answers

Frequently asked questions

Is there a depth map for Thrasher Lake?

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

What fish are in Thrasher Lake?

The most recent DNR survey (2021) recorded brook trout, lake trout, splake.

Is Thrasher Lake stocked?

Yes. The DNR stocked splake in 2024; the stocking table on this page lists every year back to 2016.

When was Thrasher Lake last surveyed?

The Minnesota DNR last surveyed Thrasher Lake in 2021, the most recent of 11 surveys on record.

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

Page updated .