Long Lake
About Long Lake
Long Lake is a 435-acre lake near Glen in Aitkin County, Minnesota. It reaches 116 feet at its deepest point, with an average depth of about 30 feet, and has roughly 5.5 miles of shoreline. DNR surveys put average water clarity at about 11.9 feet, clearer than most lakes in the state.
Minnesota DNR fisheries surveys list 16 fish species here, including walleye, northern pike, largemouth bass, black crappie, bluegill, and pumpkinseed. 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.
There is one public boat launch (concrete surface) managed by the Minnesota DNR. Ice typically goes out around April 18, based on 10 years of DNR ice-out records.
Plan Your Visit to Long Lake
- 435 acres, up to 116 feet deep, near Glen
- 1 public boat launch (concrete) — managed by the Minnesota DNR
- Game fish on the DNR survey: walleye, northern pike, largemouth bass, black crappie, bluegill, and pumpkinseed
- Average water clarity around 11.9 feet
Access & Fees
- Public access
- 1 public boat launch (concrete)
- Launch fee
- Free at DNR accesses
- Managed by
- Minnesota DNR
Conditions
- Surface area
- 435 acres
- Max depth
- 116 ft
- Average depth
- 30 ft
- Shoreline
- 5.5 mi
- Water clarity
- 11.9 ft
- Shallows (under 15 ft)
- 120 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
- 10
- Stocked
- Yes
- Last DNR survey
- 2025
- Special regulations
- No
- Fishing pier
- No
- Ice fishing
- Yes
- Boat launch
- Yes
Fishing data: Minnesota Department of Natural Resources. Regulations change — confirm with the current DNR fishing regulations.
Ice-Out History
- Median ice-out
- April 18
- Years of record
- 10
- Earliest
- March 16, 2004
- Latest
- April 30, 2008
- Most recent
- April 12, 2015
See every lake on the ice-out tracker. Ice-out data: Minnesota DNR State Climatology Office.
Activities
Amenities
Fish Species
Plan your trip to Long Lake
Compare Long Lake against the top-ranked lakes nearby, then map your route.
See how Long Lake ranks among fishing lakes nearby.
See how Long Lake ranks among boating lakes nearby.
See how Long Lake ranks among paddling lakes nearby.
See how Long Lake ranks among ice fishing lakes nearby.
Nearby Lakes
Dam Lake
60 out of 100 Lake ScoreAitkin · Aitkin598 acres
2 miles away
Rabbit Lake
57 out of 100 Lake ScoreAitkin · Glen212 acres
2.8 miles away
Swamp Lake
25 out of 100 Lake ScoreAitkin · Glen272 acres
3.4 miles away
Clear Lake
64 out of 100 Lake ScoreAitkin · Glen574 acres
4.1 miles away
Section Twelve Lake
54 out of 100 Lake ScoreAitkin · Rossburg170 acres
4.5 miles away
Sugar Lake
61 out of 100 Lake ScoreAitkin · Glen416 acres
5 miles away
Frequently Asked Questions
Where is Long Lake?
Long Lake is in Aitkin County, Minnesota, near Glen. It covers 435 acres and reaches 116 feet deep.
How big and how deep is Long Lake?
Long Lake covers 435 acres with about 5.5 miles of shoreline. Its maximum depth is 116 feet and its average depth is about 30 feet.
What fish can you catch at Long Lake?
Minnesota DNR surveys list Walleye, Northern Pike, Largemouth Bass, Black Crappie, Bluegill, Pumpkinseed, Yellow Perch, Splake, and Tullibee (Cisco) and other species. A Minnesota fishing license is required for anyone 16 and older.
Is there a public boat launch on Long Lake?
Yes. Long Lake has 1 public boat launch (concrete), managed by the Minnesota DNR. DNR public water accesses are free to use.
Can you swim at Long Lake?
There is no mapped public swim beach at Long 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 Long Lake stocked?
Yes. The Minnesota DNR has stocking records for Long Lake; species and numbers vary by year, so see the stocking report on DNR LakeFinder.
When does the ice go out on Long Lake?
The median ice-out date is April 18, from 10 years of Minnesota DNR records. The earliest on record is March 16, 2004 and the latest is April 30, 2008.