Minnesota · DNR survey data
Mahnomen, Alstead & Arco Mine Lake
Mahnomen, Alstead & Arco Mine Lake covers 272 acres in Crow Wing County, running to 525 feet, last surveyed by the DNR in 2022. The Minnesota DNR has not published bathymetry for this lake, so there is no depth map here, just the survey record: what the nets held and how big it ran.
Open Mahnomen, Alstead & Arco Mine Lake in the live map → Write a report
DNR survey data
Fish species
Largemouth bassPresent1.3per gill net11"Typical20"Biggest
Lengths measured · 16 fish
Recent · 2022Lengths measured · 16 fish
2022Lengths measured · 9 fish
2010Only 9 fish measured that year — too few to read as a shape.
Northern pikeJust a few1per gill net25"Typical31"Biggest
Lengths measured · 12 fish
Recent · 2022Lengths measured · 12 fish
2022Lengths measured · 27 fish
2010BluegillPresent1.7per gill net5"Typical7"Biggest
Lengths measured · 20 fish
Recent · 2022Lengths measured · 20 fish
2022Lengths measured · 152 fish
2010Yellow perchFair numbers1.6per gill net7"Typical8"Biggest
Lengths measured · 19 fish
Recent · 2022Lengths measured · 19 fish
2022Lengths measured · 119 fish
2010Rainbow troutPresentPresent in recent DNR surveys.
Present in recent DNR surveys.
Lengths measured · 55 fish
Rock bassGood numbers2.3per gill net8"Typical10"Biggest
Lengths measured · 28 fish
Recent · 2022Lengths measured · 28 fish
2022Lengths measured · 2 fish
2010Only 2 fish measured that year — too few to read as a shape.
Rates come from standard DNR survey gear (gill nets, trap nets, electrofishing), judged against statewide benchmarks for the same gear — which is why the same number of fish per net can read differently for two species. Where the standard gear can't count a species reliably, the page shows presence and size only. Typical is the middle fish of those measured. Open a row for the full length spread, survey by survey. You can read every number on this page without an app or an account.
Recent reports
Mahnomen, Alstead & Arco Mine Lake fishing reports
Recent reports on Mahnomen, Alstead & Arco Mine Lake from guides, tournaments and regular anglers. Anything posted in the last two weeks also bumps the matching spots on the live map, so you'll see a "matches a recent report" tag on them.
Public water access
Getting on the water
- Alstead Mine Lake (trailer launch)
- Mahnomen Lake (carry-in)
Within 30 miles
Nearby lakes
- Pennington Mine Lake · 62 ac · 0.7 mi
- Huntington Mine Lake · 106 ac · 0.9 mi
- Black Hoof Lake · 201 ac · 1.3 mi
- Portsmouth Mine Lake · 149 ac · 1.4 mi
- Mallen Pit · 6 ac · 2 mi
- Little Black Hoof Lake · 72 ac · 2.1 mi
- Manuel Mine Lake · 41 ac · 2.7 mi
- Snoshoe Mine Lake · 7 ac · 2.7 mi
Quick answers
Frequently asked questions
Is there a depth map for Mahnomen, Alstead & Arco Mine Lake?
The Minnesota DNR has not published bathymetry for Mahnomen, Alstead & Arco Mine Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Mahnomen, Alstead & Arco Mine Lake?
The most recent DNR survey (2022) recorded walleye, largemouth bass, smallmouth bass, northern pike, bluegill, crappie, yellow perch, rainbow trout, rock bass.
Does Mahnomen, Alstead & Arco Mine Lake have a public access?
Yes. Mahnomen, Alstead & Arco Mine Lake has 2 public access sites, including Alstead Mine Lake (trailer launch).
Is Mahnomen, Alstead & Arco Mine Lake stocked?
No stocking is on record for Mahnomen, Alstead & Arco Mine Lake in the DNR's stocking database.
When was Mahnomen, Alstead & Arco Mine Lake last surveyed?
The Minnesota DNR last surveyed Mahnomen, Alstead & Arco Mine Lake in 2022, the most recent of 4 surveys on record.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .