Little Boy Lake
Cass County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 11016700
DNR records show 5 stocking entries at Little Boy Lake since 2016, most recently walleye fry in 2024 (467,190 fish).
- Little Boy Lake has 5 DNR stocking records across 5 years (2016-2024): walleye (5).
- The most-stocked species by count is walleye: 3,269,175 fish on record.
- Maximum depth 74 ft; surface area 1,452 acres, 466 littoral acres, 10.0 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 12.7 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, cisco species, hybrid sunfish, largemouth bass, muskellunge, northern pike, pumpkinseed, rock bass, and 6 more.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (targeted survey).
- Cass County, nearest town Longville; DNR lake number (DOW) 11016700.
Depth map
Bathymetric contours from the Minnesota DNR lake survey mapped 7/20/1953 (orig map); depths in feet. Simplified for the web; not for navigation.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2024 | Walleye | fry | 467,190 | 4.0 |
| 2022 | Walleye | fry | 467,190 | 3.9 |
| 2021 | Walleye | fry | 470,375 | 3.9 |
| 2018 | Walleye | fry | 932,085 | 7.6 |
| 2016 | Walleye | fry | 932,335 | 7.8 |
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 | On SW corner of lake off of County Rd 54 |
DNR fish survey, 2024
Temperature and dissolved oxygen profiles were collected in the deepest basins in Little Boy Lake on July 30, 2024 , to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Cisco, also known as Tullibee, the most sensitive coldwater species present in this lake. Cisco require a layer of oxythermal habitat that contains water temperatures below 21.2 degrees C (70.2 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profile from the deepest basin, the water temperature decreased to below 21.2 degrees C (70.2 degrees F) at 22.8 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 22.5 feet at the time of sampling. The water column did not contain a layer of water with sufficient temperature and dissolved oxygen for Cisco. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 21.5 degrees C (70.7 degrees F). TDO3 values near 21.2 degrees C (70.2 degrees F) indicate that oxythermal conditions were marginal for Cisco at the time of this survey. Data collected by the Minnesota Department of Natural Resources in 2022 and 2023 during the late summer thermal stress period indicate suitable oxythermal habitat, with the least favorable conditions recorded in 2022. When inadequate oxythermal habitat is available, Cisco are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.
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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