Rock Lake
About Rock Lake
Rock Lake is a 261-acre lake near Casino in Cass County, Minnesota. It reaches 17 feet at its deepest point, and has roughly 3.4 miles of shoreline. DNR surveys put average water clarity at about 7 feet.
Minnesota DNR fisheries surveys list 11 fish species here, including northern pike, largemouth bass, black crappie, bluegill, pumpkinseed, and yellow perch. 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 2025.
The DNR lists public water access for the lake; confirm the launch type before towing a trailer in. Rock Lake Campground is mapped close to the shoreline for overnight stays.
Plan Your Visit to Rock Lake
- 261 acres, up to 17 feet deep, near Casino
- Public access on record — bring a boat you can hand-launch unless you confirm a ramp
- Game fish on the DNR survey: northern pike, largemouth bass, black crappie, bluegill, pumpkinseed, and yellow perch
- Average water clarity around 7 feet
- Camping close to the water at Rock Lake Campground
Access & Fees
- Public access
- Public access on record
- Launch fee
- Free at DNR accesses
- Managed by
- Minnesota DNR
Conditions
- Surface area
- 261 acres
- Max depth
- 17 ft
- Shoreline
- 3.4 mi
- Water clarity
- 7 ft
- Shallows (under 15 ft)
- 235 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
- Camping: Rock Lake Campground
- Picnic area
Best For
- Lakeside camping
- Ice is never completely safe — check thickness yourself before walking or driving on any lake
Angler's Report
Minnesota DNR LakeFinder- Species on survey
- 11
- Game fish
- 6
- Stocked
- Yes
- Last DNR survey
- 2025
- Special regulations
- No
- Fishing pier
- No
- Ice fishing
- Yes
- Boat launch
- No
Fishing data: Minnesota Department of Natural Resources. Regulations change — confirm with the current DNR fishing regulations.
Camping & Reservations
Rock Lake Campground is mapped on or near Rock Lake. Minnesota state park sites are booked through the DNR reservation system, national forest campgrounds through Recreation.gov, and most state forest campgrounds are first-come, first-served.
Campground locations © OpenStreetMap contributors. Confirm details with the operator.
Activities
Amenities
Fish Species
Plan your trip to Rock Lake
Compare Rock Lake against the top-ranked lakes nearby, then map your route.
See how Rock Lake ranks among fishing lakes nearby.
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See how Rock Lake ranks among ice fishing lakes nearby.
Nearby Lakes
Long Lake
29 out of 100 Lake ScoreCass · Casino113 acres
1.3 miles away
Green Bass Lake
46 out of 100 Lake ScoreCass · East Gull Lake44 acres
2.5 miles away
Pillager Lake
63 out of 100 Lake ScoreCass · Pillager205 acres
4 miles away
Agate Lake
46 out of 100 Lake ScoreCass · Lake Shore157 acres
5.3 miles away
Sylvan Lake
66 out of 100 Lake ScoreCass · Pillager894 acres
5.5 miles away
Gull Lake
90 out of 100 Lake ScoreCass · Nisswa10,010 acres
5.8 miles away
Frequently Asked Questions
Where is Rock Lake?
Rock Lake is in Cass County, Minnesota, near Casino. It covers 261 acres and reaches 17 feet deep.
How big and how deep is Rock Lake?
Rock Lake covers 261 acres with about 3.4 miles of shoreline. Its maximum depth is 17 feet.
What fish can you catch at Rock Lake?
Minnesota DNR surveys list 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?
Public access is on record, but not a trailer ramp: public access on record.
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.
Can you camp at Rock Lake?
Yes. Rock Lake Campground is mapped on or near the shore. Confirm whether sites are reservable or first-come, first-served before you go.