Minnesota · Cass County
Long Lake Fishing guide
Long Lake sits in Cass County, Minnesota, and covers 1,007 acres, reaching 115 ft at its deepest point. Secchi readings average around 15.9 ft of visibility. The Minnesota DNR has surveyed the lake 13 times, most recently in 2025, with walleye, largemouth bass, northern pike and bluegill in the nets.
DNR survey data
Fish species
WalleyeLast stocked 2025Fair numbers1.8per gill net17"Typical29"Biggest
Lengths measured · 44 fish
Recent · 2021 + 2025Lengths measured · 22 fish
2025Lengths measured · 22 fish
2021Lengths measured · 11 fish
2015Lengths measured · 18 fish
2010Largemouth bassPresent3per gill net12"Typical18"Biggest
Lengths measured · 73 fish
Recent · 2021 + 2025Lengths measured · 39 fish
2025Lengths measured · 34 fish
2021Lengths measured · 84 fish
2015Lengths measured · 95 fish
2010Northern pikeFair numbers8.7per gill net14"Typical36"Biggest
Lengths measured · 220 fish
Recent · 2021 + 2025Lengths measured · 112 fish
2025Lengths measured · 108 fish
2021Lengths measured · 103 fish
2015Lengths measured · 225 fish
2010BluegillJust a few8.9per trap net6"Typical8"Biggest
Lengths measured · 339 fish
Recent · 2021 + 2025Lengths measured · 183 fish
2025Lengths measured · 156 fish
2021Lengths measured · 161 fish
2015Lengths measured · 1349 fish
2010CrappieJust a few1.1per trap net8"Typical12"Biggest
Lengths measured · 50 fish
Recent · 2021 + 2025Lengths measured · 22 fish
2025Lengths measured · 28 fish
2021Lengths measured · 40 fish
2015Lengths measured · 129 fish
2010Yellow perchJust a few0.6per gill net8"Typical10"Biggest
Lengths measured · 15 fish
Recent · 2021 + 2025Lengths measured · 7 fish
2025Only 7 fish measured that year — too few to read as a shape.
Lengths measured · 8 fish
2021Only 8 fish measured that year — too few to read as a shape.
Lengths measured · 6 fish
2015Only 6 fish measured that year — too few to read as a shape.
Lengths measured · 42 fish
2010Rock bassGood numbers2.3per gill net7"Typical10"Biggest
Lengths measured · 74 fish
Recent · 2021 + 2025Lengths measured · 39 fish
2025Lengths measured · 35 fish
2021Lengths measured · 35 fish
2015Lengths measured · 152 fish
2010Rates come from standard DNR survey gear (gill nets, trap nets, electrofishing), judged against statewide benchmarks for the same gear, so the same number of fish per net can read differently for two species. Where the standard gear can't count a species reliably, only presence and size are listed. Typical is the middle fish of those measured. Open a row for the full length spread, survey by survey.
How to fish Long Lake through the year
Walleye
- Spring
- Walleye are shallow, on and just off the spawning flats and the first green weeds. At 15.9 ft of clarity, fish them deeper and lighter than usual.
- Early summer
- Walleye are setting up on the outside weed edge, points and shallow structure.
- Summer
- Walleye are working the weed edge, points and any wind-blown structure. On a lake that drops to 115 ft, check the deep edge of that structure too.
- Fall
- Walleye are packing onto the sharpest breaks and points as the water cools, in big schools with short windows.
Northern pike
- Spring
- Pike are in the shallow bays and along new weed growth. At 15.9 ft of clarity, fish them deeper and lighter than usual.
- Early summer
- Pike are on the outside weed edge and points.
- Summer
- Pike are on the deep weed edge and points near the coolest water they can find. On a lake that drops to 115 ft, check the deep edge of that structure too.
- Fall
- Pike are on the last green weeds and the breaks beside them, feeding heavily as the water drops.
Season patterns for each species. Open the live map for today's wind, light and water temp.
Size history
Biggest fish by survey year
| Survey year | Walleye | Northern pike | Largemouth bass |
|---|---|---|---|
| 2025 | 29" | 36" | 18" |
| 2021 | 25" | 34" | 16" |
| 2015 | 22" | 34" | 17" |
| 2010 | 23" | 36" | 16" |
| 2008 | 25" | 35" | 17" |
| 2004 | 27" | 37" | 17" |
| 2001 | 28" | 27" | 22" |
| 1998 | 25" | 32" | 18" |
Longest fish measured by DNR survey crews in each year's nets. Survey gear samples the population, so the lake usually holds larger fish than any survey measured.
Suggested tackle
What to bring
Top presentations for this lake's structure and clarity:
Walleye · Live bait
Live-Bait (Lindy) Rig + Leech/Crawler
jumbo leech or half a nightcrawler
Walleye · Trolling
Leadcore Line + Crankbaits
4–5" mid-diving crankbait behind a long leadcore run
Northern pike · Soft plastics
Paddletail Swimbait on Jighead
4–5" paddletail swimbait on a ball-head swimbait jighead
Northern pike · Jigs & bladed
Inline Spinner (Mepps/Blue Fox)
#2–#4 in-line spinner
Largemouth bass · Soft plastics
Texas-Rigged Worm
7" ribbon-tail or straight-tail plastic worm
Largemouth bass · Soft plastics
Free Rig
Creature bait or magnum finesse worm
Full setups, including hooks, weights and line, are on the live map. As an Amazon Associate I earn from qualifying purchases.
DNR stocking records
Stocking history
| Year | Species | Stocked |
|---|---|---|
| 2025 | Walleye | 357,330 fry |
| 2024 | Rainbow Trout | 8,500 yearlings |
| 2024 | Walleye | 458,055 fry |
| 2023 | Rainbow Trout | 10,000 yearlings |
| 2023 | Walleye | 372,600 fry |
| 2022 | Rainbow Trout | 10,000 yearlings |
| 2021 | Rainbow Trout | 10,000 yearlings |
| 2021 | Walleye | 357,750 fry · 2,450 yearlings |
| 2020 | Rainbow Trout | 9,322 yearlings |
| 2020 | Walleye | 4,900 yearlings |
| 2019 | Rainbow Trout | 9,998 yearlings |
| 2018 | Rainbow Trout | 10,000 fingerlings · 10,000 yearlings |
Stocking records before 2018 omitted.
MN DNR · in their words
From the 2025 survey
Long Lake (DOW# 11-0142; Lake Class 25) is a 1007-acre lake with 15.96 miles of shoreline and a maximum depth of 115 feet located near Longville, MN. A DNR owned public access is located on the northwest shore. The DNR has classified Minnesota's lakes into 43 different classes based on physical, chemical and other characteristics. Long Lake is in Lake Class 25; lakes in this class are deep, clear, and irregularly shaped lakes. Other area lakes in this class include Blackwater, Howard, Inguadona and Girl. The lake is primarily managed for Largemouth Bass, Black Crappie and Bluegill. Secondarily for Northern Pike, Tullibee (Cisco) and Yellow Perch.
Long Lake is a good multi-species lake with potential to produce trophy-sized fish. No Rainbow Trout were sampled in the 2025 survey and trout management was discontinued in 2024 after stockings failed to produce a fishery. Largemouth Bass were abundant with fish from 5 to 18 inches sampled; management goals are based on spring electrofishing which was not conducted in 2025. Black Crappie were sampled at moderate levels with fish from 5 to 11 inches sampled. Goals for the Black Crappie population are based on spring trap netting which was not conducted in 2025. Bluegill were sampled at low levels with fish from 4 to 8 inches sampled. Size structure goals for Bluegill were met however; abundance goals were not. Northern Pike were caught at moderate levels with fish from 10 to 36 inches sampled. Northern Pike management goals were partially met and size structure improved from the 2021 survey. Tullibee (Cisco) were caught at moderate levels with fish ranging from 15 to 17 inches. Yellow Perch were sampled in very low numbers, and the catch was below the management goal. The Walleye catch rate remained low despite recent increased stocking efforts. Walleye ranged in length from 12 to 29 inches.
Read the full DNR narrative
Other fish species sampled in Long Lake include Brown Bullhead, Hybrid Sunfish, Yellow Bullhead, Pumpkinseed, and Rock Bass.
People can have significant impacts on lakes and the fish populations they support. Harvest, lakeshore development, removal of shoreline vegetation, and introductions of invasive species can all adversely affect fish populations. Currently, no aquatic invasive species (AIS) have been identified in Long Lake. AIS are moved from infested to non-infested waters by anglers, boaters, and lake shore owners and can adversely impact lakes and fish populations. To avoid spreading AIS, lake users are required to remove all aquatic plants or animals from their watercraft and drain all water from their boat before leaving the access. If you suspect an infestation of an invasive species in this lake, save a specimen and report it to a local natural resource office. Additional information on all of these topics can be found on the DNR website (www.dnr.state.mn.us) or by contacting the Walker Area Fisheries office.
Narrative text from the Minnesota DNR lake survey.
Recent reports
Long Lake fishing reports
Recent reports on Long 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
- DNR access: Public access NW side of lake; T141N R28W S13
DNR bathymetry
Long Lake depth map
Within 30 miles
Nearby lakes
- Boxell Lake · 66 ac · 2.2 mi
- Girl Lake · 428 ac · 3.1 mi
- Inguadona Lake · 1,133 ac · 3.7 mi
- Rice Lake · 270 ac · 3.8 mi
- Town Line Lake · 698 ac · 3.8 mi
- Three Island Lake · 288 ac · 4.3 mi
- Lake · 759 ac · 4.6 mi
- Silver Lake · 121 ac · 5 mi
Quick answers
Frequently asked questions
How deep is Long Lake?
Long Lake reaches 115 ft at its deepest point; about 35% of the lake is littoral (15 ft or shallower).
How big is Long Lake?
Long Lake covers 1,007 acres with about 16 miles of shoreline.
How clear is the water in Long Lake?
DNR Secchi readings on Long Lake average 15.9 ft of visibility, clear water for a Minnesota lake.
What fish are in Long Lake?
Minnesota DNR surveys (most recently 2025) record walleye, largemouth bass, northern pike, bluegill, crappie, yellow perch, rock bass.
Is Long Lake stocked?
Yes. The DNR stocked walleye in 2025; the stocking table on this page lists every year back to 2018.
Does Long Lake have a public access?
Yes. Long Lake has one public access site: DNR access (Public access NW side of lake; T141N R28W S13).
How big do walleye get in Long Lake?
The biggest walleye measured in recent DNR surveys taped 29"; the size-history table on this page tracks the biggest fish in each survey back to 1998.
When was Long Lake last surveyed?
The Minnesota DNR last surveyed Long Lake in 2025, the most recent of 13 surveys on record.
Page updated .
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