Rock Lake
About Rock Lake
Rock Lake is a 1,196-acre lake near Detroit Lakes in Becker County, Minnesota. It reaches 18 feet at its deepest point, and has roughly 10.1 miles of shoreline. DNR surveys put average water clarity at about 6.7 feet.
Minnesota DNR fisheries surveys list 12 fish species here, including walleye, northern pike, largemouth bass, black crappie, bluegill, and pumpkinseed. The DNR has stocking records for the lake, so check the stocking report for the most recent species and year classes. The most recent fisheries survey on file dates to 2023.
There is one public boat launch (concrete surface) managed by the Minnesota DNR.
Plan Your Visit to Rock Lake
- 1,196 acres, up to 18 feet deep, near Detroit Lakes
- 1 public boat launch (concrete) — managed by the Minnesota DNR
- Game fish on the DNR survey: walleye, northern pike, largemouth bass, black crappie, bluegill, and pumpkinseed
- Average water clarity around 6.7 feet
Access & Fees
- Public access
- 1 public boat launch (concrete)
- Launch fee
- Free at DNR accesses
- Managed by
- Minnesota DNR
Conditions
- Surface area
- 1,196 acres
- Max depth
- 18 ft
- Shoreline
- 10.1 mi
- Water clarity
- 6.7 ft
- Shallows (under 15 ft)
- 1,001 acres
Rules & Regulations
- A Minnesota fishing license is required for anglers 16 and older
- Drain plugs must be out and all water drained before leaving any access; remove aquatic plants from boats and trailers
- Children under 10 must wear a life jacket on a boat that is underway
Facilities
- 1 public boat launch (concrete)
Best For
- Walleye fishing
- Ice fishing
- Ice is never completely safe — check thickness yourself before walking or driving on any lake
Angler's Report
Minnesota DNR LakeFinder- Species on survey
- 12
- Game fish
- 7
- Stocked
- Yes
- Last DNR survey
- 2023
- Special regulations
- No
- Fishing pier
- No
- Ice fishing
- Yes
- Boat launch
- Yes
Fishing data: Minnesota Department of Natural Resources. Regulations change — confirm with the current DNR fishing regulations.
Activities
Amenities
Fish Species
Plan your trip to Rock Lake
Compare Rock Lake against the top-ranked lakes nearby, then map your route.
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See how Rock Lake ranks among ice fishing lakes nearby.
Nearby Lakes
Rice Lake
26 out of 100 Lake ScoreBecker · Richwood231 acres
1.7 miles away
Buffalo Lake
63 out of 100 Lake ScoreBecker · Richwood418 acres
3.5 miles away
Pickerel Lake
64 out of 100 Lake ScoreBecker · Detroit Lakes361 acres
3.7 miles away
North Tamarack Lake
56 out of 100 Lake ScoreBecker · Rochert1,442 acres
3.9 miles away
Cotton Lake
63 out of 100 Lake ScoreBecker · Rochert1,763 acres
4 miles away
Little Floyd Lake
56 out of 100 Lake ScoreBecker · Detroit Lakes215 acres
5.2 miles away
Frequently Asked Questions
Where is Rock Lake?
Rock Lake is in Becker County, Minnesota, near Detroit Lakes. It covers 1,196 acres and reaches 18 feet deep.
How big and how deep is Rock Lake?
Rock Lake covers 1,196 acres with about 10.1 miles of shoreline. Its maximum depth is 18 feet.
What fish can you catch at Rock Lake?
Minnesota DNR surveys list Walleye, Northern Pike, Largemouth Bass, Black Crappie, Bluegill, Pumpkinseed, and Yellow Perch and other species. A Minnesota fishing license is required for anyone 16 and older.
Is there a public boat launch on Rock Lake?
Yes. Rock Lake has 1 public boat launch (concrete), managed by the Minnesota DNR. DNR public water accesses are free to use.
Can you swim at Rock Lake?
There is no mapped public swim beach at Rock Lake. Minnesota's public waters are open to swimming where you have legal access, but there are no lifeguards or water-quality monitoring away from designated beaches.
Is Rock Lake stocked?
Yes. The Minnesota DNR has stocking records for Rock Lake; species and numbers vary by year, so see the stocking report on DNR LakeFinder.