Minnesota · DNR survey data
Diamond Lake
Diamond Lake covers 77 acres in Cass County, running to 31 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.
DNR survey data
Fish species
No recent survey rating.
Last recorded in the 1991 survey and not seen since.
No recent survey rating.
No recent survey rating.
Rainbow troutStocked · 2025Present, stockedPresent and managed by the DNR.
Present and managed by the DNR.
Lengths measured · 205 fish
Recent · 2021Lengths measured · 205 fish
2021Lengths measured · 27 fish
2017Lengths measured · 97 fish
2015Lengths measured · 66 fish
2014Rates 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 | 100 yearlings · 102 adults |
| 2024 | Rainbow Trout | 7,000 fingerlings · 1,500 yearlings |
| 2023 | Rainbow Trout | 14,000 fingerlings |
| 2022 | Rainbow Trout | 14,020 fingerlings |
| 2021 | Rainbow Trout | 16,035 fingerlings |
| 2020 | Rainbow Trout | 10,305 fingerlings |
| 2019 | Rainbow Trout | 14,000 fingerlings |
| 2018 | Rainbow Trout | 15,502 fingerlings |
| 2017 | Rainbow Trout | 14,000 fingerlings |
| 2016 | Rainbow Trout | 14,000 fingerlings |
Recent reports
Diamond Lake fishing reports
Recent reports on Diamond 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
- Diamond Lake (trailer launch)
Within 30 miles
Nearby lakes
- Long Lake · 59 ac · 1.1 mi
- Hovde Lake · 133 ac · 1.1 mi
- Little Webb Lake · 226 ac · 1.8 mi
- Teepee Lake · 21 ac · 2.1 mi
- South Stocking Lake · 46 ac · 2.6 mi
- Stony Lake · 563 ac · 2.8 mi
- Webb Lake · 720 ac · 3.3 mi
- Pine Lake · 261 ac · 3.8 mi
Quick answers
Frequently asked questions
Is there a depth map for Diamond Lake?
The Minnesota DNR has not published bathymetry for Diamond Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Diamond Lake?
The most recent DNR survey (2021) recorded walleye, muskellunge, crappie, yellow perch, rainbow trout.
Does Diamond Lake have a public access?
Yes. Diamond Lake has one public access site: Diamond Lake (trailer launch).
Is Diamond Lake stocked?
Yes. The DNR stocked rainbow trout in 2025; the stocking table on this page lists every year back to 2016.
When was Diamond Lake last surveyed?
The Minnesota DNR last surveyed Diamond Lake in 2021, the most recent of 18 surveys on record.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .