Mahnomen, Alstead & Arco Lake
About Mahnomen, Alstead & Arco Lake
Mahnomen, Alstead & Arco Lake is a 272-acre lake near Armour Number Two Mine in Crow Wing County, Minnesota. It reaches 525 feet at its deepest point, and has roughly 8.1 miles of shoreline. DNR surveys put average water clarity at about 32.3 feet, which is exceptionally clear for Minnesota.
Minnesota DNR fisheries surveys list 16 fish species here, including walleye, northern pike, largemouth bass, smallmouth bass, black crappie, and bluegill. Special fishing regulations apply to lake trout, and they override the statewide limits. The most recent fisheries survey on file dates to 2022.
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 Mahnomen, Alstead & Arco Lake
- 272 acres, up to 525 feet deep, near Armour Number Two Mine
- 1 public boat launch (concrete) — managed by the Minnesota DNR
- Game fish on the DNR survey: walleye, northern pike, largemouth bass, smallmouth bass, black crappie, and bluegill
- Special fishing regulations apply here and override the statewide limits
- Average water clarity around 32.3 feet — very clear
- 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
- 272 acres
- Max depth
- 525 ft
- Shoreline
- 8.1 mi
- Water clarity
- 32.3 ft
- Shallows (under 15 ft)
- 53 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
- A trout and salmon stamp is required to fish designated trout lakes or to keep trout
Facilities
- 1 public boat launch (concrete)
Best For
- Walleye fishing
- Quiet paddling
- 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
- 16
- Game fish
- 12
- Stocked
- No
- Last DNR survey
- 2022
- Special regulations
- Yes
- Fishing pier
- No
- Ice fishing
- Yes
- Boat launch
- Yes
Special regulations on this lake
- Lake Trout: All less than 20" must be immediately released, possession limit one.
Fishing data: Minnesota Department of Natural Resources. Regulations change — confirm with the current DNR fishing regulations.
Activities
Amenities
Fish Species
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Nearby Lakes
Pennington Mine
70 out of 100 Lake ScoreCrow Wing · Ironton62 acres
0.6 miles away
Mahnomen Lake
43 out of 100 Lake ScoreCrow Wing · Trommald238 acres
0.8 miles away
Huntington Mine
68 out of 100 Lake ScoreCrow Wing · Crosby106 acres
0.8 miles away
Black Hoof Lake
61 out of 100 Lake ScoreCrow Wing · Ironton201 acres
1.3 miles away
Portsmouth Mine
74 out of 100 Lake ScoreCrow Wing · Armour Number Two Mine149 acres
1.4 miles away
Little Black Hoof Lake
51 out of 100 Lake ScoreCrow Wing · Riverton72 acres
2.2 miles away
Frequently Asked Questions
Where is Mahnomen, Alstead & Arco Lake?
Mahnomen, Alstead & Arco Lake is in Crow Wing County, Minnesota, near Armour Number Two Mine. It covers 272 acres and reaches 525 feet deep.
How big and how deep is Mahnomen, Alstead & Arco Lake?
Mahnomen, Alstead & Arco Lake covers 272 acres with about 8.1 miles of shoreline. Its maximum depth is 525 feet.
What fish can you catch at Mahnomen, Alstead & Arco Lake?
Minnesota DNR surveys list Walleye, Northern Pike, Largemouth Bass, Smallmouth Bass, Black Crappie, Bluegill, Pumpkinseed, Yellow Perch, and Rainbow Trout and other species. A Minnesota fishing license is required for anyone 16 and older.
Is there a public boat launch on Mahnomen, Alstead & Arco Lake?
Yes. Mahnomen, Alstead & Arco Lake has 1 public boat launch (concrete), managed by the Minnesota DNR. DNR public water accesses are free to use.
Can you swim at Mahnomen, Alstead & Arco Lake?
There is no mapped public swim beach at Mahnomen, Alstead & Arco 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, Alstead & Arco Lake stocked?
The DNR has no stocking report on file for Mahnomen, Alstead & Arco Lake; its fishery is sustained by natural reproduction or has not been stocked recently.
Are there special fishing regulations on Mahnomen, Alstead & Arco Lake?
Yes. All less than 20" must be immediately released, possession limit one.
Does Mahnomen, Alstead & Arco Lake have invasive species?
Yes. The DNR lists Mahnomen, Alstead & Arco 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.