Long Lake
About Long Lake
Long Lake is a 1,007-acre lake near Longville in Cass County, Minnesota. It reaches 115 feet at its deepest point, and has roughly 16 miles of shoreline. DNR surveys put average water clarity at about 15.9 feet, which is exceptionally clear for Minnesota.
Minnesota DNR fisheries surveys list 14 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 21, based on 58 years of DNR ice-out records.
Plan Your Visit to Long Lake
- 1,007 acres, up to 115 feet deep, near Longville
- 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 15.9 feet — very clear
Access & Fees
- Public access
- 1 public boat launch (concrete)
- Launch fee
- Free at DNR accesses
- Managed by
- Minnesota DNR
Conditions
- Surface area
- 1,007 acres
- Max depth
- 115 ft
- Shoreline
- 16 mi
- Water clarity
- 15.9 ft
- Shallows (under 15 ft)
- 356 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
- 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
- 14
- Game fish
- 9
- 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 21
- Years of record
- 58
- Earliest
- March 25, 2012
- Latest
- May 11, 2013
- Most recent
- April 22, 2026
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.
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See how Long Lake ranks among ice fishing lakes nearby.
Nearby Lakes
Kego Lake
26 out of 100 Lake ScoreCass · Longville121 acres
0.7 miles away
Girl Lake
65 out of 100 Lake ScoreCass · Longville428 acres
3.4 miles away
Inguadona Lake
64 out of 100 Lake ScoreCass · Longville1,133 acres
3.6 miles away
Town Line Lake
54 out of 100 Lake ScoreCass · Longville698 acres
3.6 miles away
Cooper Lake
31 out of 100 Lake ScoreCass · Longville133 acres
3.8 miles away
Rice Lake
45 out of 100 Lake ScoreCass · Inguadona270 acres
3.9 miles away
Frequently Asked Questions
Where is Long Lake?
Long Lake is in Cass County, Minnesota, near Longville. It covers 1,007 acres and reaches 115 feet deep.
How big and how deep is Long Lake?
Long Lake covers 1,007 acres with about 16 miles of shoreline. Its maximum depth is 115 feet.
What fish can you catch at Long Lake?
Minnesota DNR surveys list Walleye, Northern Pike, Largemouth Bass, Black Crappie, Bluegill, Pumpkinseed, Yellow Perch, Tullibee (Cisco), and Rock Bass 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 21, from 58 years of Minnesota DNR records. The earliest on record is March 25, 2012 and the latest is May 11, 2013.