Boy Lake
About Boy Lake
Boy Lake is a 3,308-acre lake near Boy River in Cass County, Minnesota. It reaches 45 feet at its deepest point, and has roughly 21.6 miles of shoreline. DNR surveys put average water clarity at about 8.6 feet.
Minnesota DNR fisheries surveys list 20 fish species here, including walleye, northern pike, muskellunge, largemouth bass, smallmouth bass, and black crappie. Special fishing regulations apply to crappie and sunfish, and they override the statewide limits. The most recent fisheries survey on file dates to 2025.
There is one public boat launch (concrete surface) managed by the Minnesota DNR. The lake is listed as infested with zebra mussel — clean, drain and dry your boat and gear before leaving.
Plan Your Visit to Boy Lake
- 3,308 acres, up to 45 feet deep, near Boy River
- 1 public boat launch (concrete) — managed by the Minnesota DNR
- Game fish on the DNR survey: walleye, northern pike, muskellunge, largemouth bass, smallmouth bass, and black crappie
- Special fishing regulations apply here and override the statewide limits
- Average water clarity around 8.6 feet
- Listed as infested with zebra mussel — clean, drain and dry before you leave
Access & Fees
- Public access
- 1 public boat launch (concrete)
- Launch fee
- Free at DNR accesses
- Managed by
- Minnesota DNR
Conditions
- Surface area
- 3,308 acres
- Max depth
- 45 ft
- Shoreline
- 21.6 mi
- Water clarity
- 8.6 ft
- Shallows (under 15 ft)
- 2,007 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
- 20
- Game fish
- 12
- Stocked
- No
- Last DNR survey
- 2025
- Special regulations
- Yes
- Fishing pier
- No
- Ice fishing
- Yes
- Boat launch
- Yes
Special regulations on this lake
- Crappie: Daily limit five.
- Sunfish: Daily limit 10.
Fishing data: Minnesota Department of Natural Resources. Regulations change — confirm with the current DNR fishing regulations.
Activities
Amenities
Fish Species
Plan your trip to Boy Lake
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Nearby Lakes
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2.1 miles away
Swift Lake
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Town Line Lake
54 out of 100 Lake ScoreCass · Longville698 acres
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Mabel Lake
64 out of 100 Lake ScoreCass · Remer184 acres
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Long Lake
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Kego Lake
26 out of 100 Lake ScoreCass · Longville121 acres
6.1 miles away
Frequently Asked Questions
Where is Boy Lake?
Boy Lake is in Cass County, Minnesota, near Boy River. It covers 3,308 acres and reaches 45 feet deep.
How big and how deep is Boy Lake?
Boy Lake covers 3,308 acres with about 21.6 miles of shoreline. Its maximum depth is 45 feet.
What fish can you catch at Boy Lake?
Minnesota DNR surveys list Walleye, Northern Pike, Muskellunge, Largemouth Bass, Smallmouth 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 Boy Lake?
Yes. Boy Lake has 1 public boat launch (concrete), managed by the Minnesota DNR. DNR public water accesses are free to use.
Can you swim at Boy Lake?
There is no mapped public swim beach at Boy 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 Boy Lake stocked?
The DNR has no stocking report on file for Boy Lake; its fishery is sustained by natural reproduction or has not been stocked recently.
Are there special fishing regulations on Boy Lake?
Yes. Daily limit five. Daily limit 10.
Does Boy Lake have invasive species?
Yes. The DNR lists Boy Lake as infested with zebra mussel. State law requires you to clean off plants, pull the drain plug and drain all water before leaving the access.