Minnesota · DNR survey data
Rock Lake
Rock Lake covers 79 acres in Pine County, running to 11 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
Northern pikeJust a few4per gill net27"Typical29"Biggest
Lengths measured · 17 fish
Recent surveysLengths measured · 17 fish
2012Lengths measured · 17 fish
2007Lengths measured · 17 fish
2002Lengths measured · 13 fish
1997BluegillJust a few11.6per trap net6"Typical9"Biggest
Lengths measured · 110 fish
Recent surveysLengths measured · 110 fish
2012Lengths measured · 242 fish
2007Lengths measured · 397 fish
2002Lengths measured · 65 fish
1997Yellow perchJust a few0.7per gill net6"Typical7"Biggest
Lengths measured · 11 fish
Recent surveysLengths measured · 11 fish
2012Lengths measured · 53 fish
2007Lengths measured · 60 fish
2002Lengths measured · 104 fish
1997Rates 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 | 200,000 fry |
| 2024 | Walleye | 200,000 fry |
| 2023 | Walleye | 400,000 fry |
| 2021 | Walleye | 200,000 fry |
| 2017 | Walleye | 200,000 fry |
Recent reports
Rock Lake fishing reports
Recent reports on Rock 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
- Rock Lake (trailer launch)
Within 30 miles
Nearby lakes
- Grace Lake · 80 ac · 1.7 mi
- Razor Lake · 98 ac · 3.1 mi
- Tamarack Lake · 71 ac · 4.1 mi
- McGowan Lake · 22 ac · 4.6 mi
- Kenney Lake · 15 ac · 4.6 mi
- Pickerel Lake · 57 ac · 24.3 mi
- Oak Lake · 459 ac · 24.6 mi
- McCormick Lake · 61 ac · 25.4 mi
Quick answers
Frequently asked questions
Is there a depth map for Rock Lake?
The Minnesota DNR has not published bathymetry for Rock Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Rock Lake?
The most recent DNR survey (2021) recorded walleye, northern pike, bluegill, yellow perch.
Does Rock Lake have a public access?
Yes. Rock Lake has one public access site: Rock Lake (trailer launch).
Is Rock Lake stocked?
Yes. The DNR stocked walleye in 2025; the stocking table on this page lists every year back to 2017.
When was Rock Lake last surveyed?
The Minnesota DNR last surveyed Rock Lake in 2021, the most recent of 12 surveys on record.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .