Long Lake (Cass County)
Cass County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 11014200
DNR records show 19 stocking entries at Long Lake (Cass County) since 2016, most recently walleye fry in 2025 (357,330 fish).
- Long Lake (Cass County) has 19 DNR stocking records across 10 years (2016-2025): rainbow trout (12), walleye (7).
- The most-stocked species by count is walleye: 1,556,585 fish on record.
- Maximum depth 115 ft; surface area 1,007 acres, 356 littoral acres, 16.0 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 15.9 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, tullibee (cisco), walleye, and 2 more.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (standard survey).
- Cass County, nearest town Longville; DNR lake number (DOW) 11014200.
Depth map
Bathymetric contours from the Minnesota DNR lake survey; depths in feet. Simplified for the web; not for navigation.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2025 | Walleye | fry | 357,330 | 3.0 |
| 2024 | Rainbow Trout | yearlings | 8,500 | 2,833.3 |
| 2024 | Walleye | fry | 458,055 | 3.9 |
| 2023 | Rainbow Trout | yearlings | 10,000 | 3,448.3 |
| 2023 | Walleye | fry | 372,600 | 3.0 |
| 2022 | Rainbow Trout | yearlings | 10,000 | 3,448.3 |
| 2021 | Rainbow Trout | yearlings | 10,000 | 3,448.3 |
| 2021 | Walleye1 | yearlings | 2,450 | 350.0 |
| 2021 | Walleye | fry | 357,750 | 3.0 |
| 2020 | Rainbow Trout | yearlings | 9,322 | 3,214.5 |
| 2020 | Walleye1 | yearlings | 4,900 | 1,050.0 |
| 2019 | Rainbow Trout | yearlings | 9,998 | 3,570.7 |
| 2018 | Rainbow Trout | fingerlings | 10,000 | 980.4 |
| 2018 | Rainbow Trout | yearlings | 10,000 | 3,571.4 |
| 2018 | Walleye1 | fingerlings | 3,500 | 350.0 |
| 2017 | Rainbow Trout | yearlings | 12,990 | 4,479.3 |
| 2017 | Rainbow Trout | adults | 35 | 106.1 |
| 2017 | Rainbow Trout | fingerlings | 10,000 | 3,125.0 |
| 2016 | Rainbow Trout | fingerlings | 12,997 | 4,332.3 |
1 fish purchased and stocked by private citizens and sporting groups.
Field note · Minnesota stocks by year, not by truck day: walleye fry go in within weeks of ice-out, fingerlings and yearlings mostly in fall, and stream trout in spring and fall. A row here means the fish went in during that year; DNR adds the year's rows after the fact, so the current year can look empty until winter.
Public accesses
| Type | Owner | Where |
|---|---|---|
| concrete ramp | Minnesota DNR | Public access NW side of lake; T141N R28W S13 |
DNR fish survey, 2025
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Bluegill | Standard trap nets | 10.42 | 125 | 0.19 |
| Yellow bullhead | Standard trap nets | 4.92 | 59 | 0.65 |
| Rock bass | Standard trap nets | 1.17 | 14 | 0.22 |
| Hybrid sunfish | Standard trap nets | 1.17 | 14 | 0.43 |
| Black crappie | Standard trap nets | 1.00 | 12 | 0.40 |
| Northern pike | Standard trap nets | 0.67 | 8 | 0.36 |
| Pumpkinseed | Standard trap nets | 0.50 | 6 | 0.31 |
| Brown bullhead | Standard trap nets | 0.17 | 2 | 1.08 |
| Northern pike | Standard gill nets | 8.67 | 104 | 1.58 |
| Yellow bullhead | Standard gill nets | 6.83 | 82 | 0.58 |
| Bluegill | Standard gill nets | 4.83 | 58 | 0.21 |
| Largemouth bass | Standard gill nets | 3.17 | 38 | 1.03 |
| Rock bass | Standard gill nets | 2.08 | 25 | 0.37 |
| Walleye | Standard gill nets | 1.83 | 22 | 2.14 |
| Tullibee (cisco) | Standard gill nets | 1.33 | 16 | 1.65 |
| Black crappie | Standard gill nets | 0.83 | 10 | 0.32 |
Catch per net (CPUE) is the DNR survey's count per gill net or trap net set; higher means more of that species were sampled, not a fishing forecast. Top species per gear shown; where we have no verified common name for a DNR code, the code itself is shown.
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. 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…
Minnesota DNR survey narrative, .
All Minnesota stockings · every Minnesota lake with a page · state CSV · this lake on DNR LakeFinder
Stocking rows, depths, accesses and survey figures are Minnesota DNR LakeFinder data as of 2026-09-02; contours are the DNR bathymetric survey. Regulations, slot limits and special rules are on the DNR page linked above, not here.
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