Mahnomen Lake
About Mahnomen Lake
Mahnomen Lake is a 238-acre lake near Trommald in Crow Wing County, Minnesota. It reaches 25 feet at its deepest point, and has roughly 4 miles of shoreline.
Minnesota DNR fisheries surveys list 13 fish species here, including northern pike, largemouth bass, black crappie, bluegill, pumpkinseed, and yellow perch. The most recent fisheries survey on file dates to 1988.
The DNR lists public water access for the lake; confirm the launch type before towing a trailer in. The lake is listed as infested with zebra mussel — clean, drain and dry your boat and gear before leaving.
Plan Your Visit to Mahnomen Lake
- 238 acres, up to 25 feet deep, near Trommald
- 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
- Listed as infested with zebra mussel — clean, drain and dry before you leave
Access & Fees
- Public access
- Public access on record
- Launch fee
- Free at DNR accesses
Conditions
- Surface area
- 238 acres
- Max depth
- 25 ft
- Shoreline
- 4 mi
- Shallows (under 15 ft)
- 190 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
No developed facilities on record. Plan to be self-sufficient.
- Ice is never completely safe — check thickness yourself before walking or driving on any lake
Angler's Report
Minnesota DNR LakeFinder- Species on survey
- 13
- Game fish
- 7
- Stocked
- No
- Last DNR survey
- 1988
- 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.
Activities
Amenities
Fish Species
Plan your trip to Mahnomen Lake
Compare Mahnomen Lake against the top-ranked lakes nearby, then map your route.
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Frequently Asked Questions
Where is Mahnomen Lake?
Mahnomen Lake is in Crow Wing County, Minnesota, near Trommald. It covers 238 acres and reaches 25 feet deep.
How big and how deep is Mahnomen Lake?
Mahnomen Lake covers 238 acres with about 4 miles of shoreline. Its maximum depth is 25 feet.
What fish can you catch at Mahnomen Lake?
Minnesota DNR surveys list Northern Pike, Largemouth Bass, Black Crappie, Bluegill, Pumpkinseed, Yellow Perch, and Rock Bass and other species. A Minnesota fishing license is required for anyone 16 and older.
Is there a public boat launch on Mahnomen Lake?
Public access is on record, but not a trailer ramp: public access on record.
Can you swim at Mahnomen Lake?
There is no mapped public swim beach at Mahnomen 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 Mahnomen Lake stocked?
The DNR has no stocking report on file for Mahnomen Lake; its fishery is sustained by natural reproduction or has not been stocked recently.
Does Mahnomen Lake have invasive species?
Yes. The DNR lists Mahnomen 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.