Acorn Lake
Becker County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 03025800
DNR records show 6 stocking entries at Acorn Lake since 2017, most recently walleye fingerlings in 2025 (1,284 fish).
- Acorn Lake has 6 DNR stocking records across 5 years (2017-2025): walleye (6).
- The most-stocked species by count is walleye: 10,273 fish on record.
- Maximum depth 55 ft, mean depth 20 ft; surface area 154 acres, 51 littoral acres, 3.0 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 13.1 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, white sucker, and 2 more.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (targeted survey).
- Becker County, nearest town Frazee; DNR lake number (DOW) 03025800.
Depth map
Bathymetric contours from the Minnesota DNR lake survey mapped 7/10/1984 (orig map); depths in feet. Simplified for the web; not for navigation.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2025 | Walleye | fingerlings | 1,284 | 121.0 |
| 2023 | Walleye | fingerlings | 5,150 | 103.0 |
| 2021 | Walleye | fingerlings | 1,243 | 113.0 |
| 2019 | Walleye | fingerlings | 2,058 | 102.0 |
| 2017 | Walleye | yearlings | 328 | 92.0 |
| 2017 | Walleye | fingerlings | 210 | 10.0 |
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 |
|---|---|---|
| asphalt ramp | Minnesota DNR | Southeast shore of lake in section 28. |
DNR fish survey, 2024
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Brassy minnow | 50-ft beach seine | 136.00 | 544 | 0.00 |
| Bluegill | 50-ft beach seine | 9.00 | 36 | 0.00 |
| BCS | 50-ft beach seine | 7.00 | 28 | 0.00 |
| Largemouth bass | 50-ft beach seine | 6.00 | 24 | 0.00 |
| BKF | 50-ft beach seine | 3.25 | 13 | 0.00 |
| Yellow perch | 50-ft beach seine | 1.25 | 5 | 0.00 |
| Hybrid sunfish | 50-ft beach seine | 0.50 | 2 | 0.00 |
| Green sunfish | 50-ft beach seine | 0.50 | 2 | 0.00 |
| Brassy minnow | 15-ft beach seine | 28.40 | 142 | 0.00 |
| Bluegill | 15-ft beach seine | 14.20 | 71 | 0.00 |
| BKF | 15-ft beach seine | 3.80 | 19 | 0.00 |
| Largemouth bass | 15-ft beach seine | 3.80 | 19 | 0.00 |
| Pumpkinseed | 15-ft beach seine | 3.40 | 17 | 0.00 |
| Yellow perch | 15-ft beach seine | 1.40 | 7 | 0.00 |
| Hybrid sunfish | 15-ft beach seine | 1.40 | 7 | 0.00 |
| BCS | 15-ft beach seine | 0.80 | 4 | 0.00 |
| Brassy minnow | Backpack electrofishing | 26.22 | 32 | 0.00 |
| Hybrid sunfish | Backpack electrofishing | 17.21 | 21 | 0.00 |
| Green sunfish | Backpack electrofishing | 16.39 | 20 | 0.00 |
| BKF | Backpack electrofishing | 13.93 | 17 | 0.00 |
| Largemouth bass | Backpack electrofishing | 13.93 | 17 | 0.00 |
| Bluegill | Backpack electrofishing | 9.83 | 12 | 0.00 |
| Yellow perch | Backpack electrofishing | 9.01 | 11 | 0.00 |
| BCS | Backpack electrofishing | 3.28 | 4 | 0.00 |
| Bluegill | Standard trap nets | 10.89 | 98 | 0.20 |
| Pumpkinseed | Standard trap nets | 0.89 | 8 | 0.23 |
| Yellow perch | Standard trap nets | 0.89 | 8 | 0.14 |
| Black crappie | Standard trap nets | 0.78 | 7 | 0.37 |
| Largemouth bass | Standard trap nets | 0.78 | 7 | 0.34 |
| Walleye | Standard trap nets | 0.56 | 5 | 0.55 |
| Yellow bullhead | Standard trap nets | 0.33 | 3 | 0.45 |
| Hybrid sunfish | Standard trap nets | 0.22 | 2 | 0.22 |
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.
A targeted survey of nearshore fish species in Acorn Lake was conducted on August 12-14, 2024, by Index of Biological Integrity (IBI) Program staff. Sampling sites were evenly spaced around the lake, and each was sampled by backpack electrofishing and seining with a 50-foot or 15-foot seine, where possible. Backpack electrofishing was completed at ten sampling stations, one station was sampled from the boat due to soft sediment and dense aquatic vegetation. A 50-foot seine was used to sample four stations, and a 15-foot seine was used at five stations, and site conditions prevented the use of seines at one station. Nearshore sampling captured 14 species of fish including two species that are intolerant of disturbance (i.e., Banded Killifish and Blackchin Shiner) and one that is tolerant of disturbance (i.e., Green Sunfish). The most common species caught in the nearshore survey was Bluntnose Minnow. A concurrent summer trap net survey was also conducted by IBI Program staff. Nine trap nets were set along the shoreline in locations that encompassed multiple habitat types. Trap net sampling captured ten species of fish; no species captured in trap nets were intolerant of disturbance. Bluegill comprised most of the catch by number and biomass. Bluegill showed a moderate size structure, their average size was around 6.5 inches with 8% of individuals being larger than 8 inches and the largest Bluegill caught was 9.25 inches. The nearshore and trap net data were combined with gill net data from a June 2023 survey to describe the fish community and provide a fish-based IBI (FIBI) score. The FIBI uses fish community data to measure a lake's health, and the types of fish species present can help identify any stressors that may be negatively affecting the lake environment. In Minnesota lakes, certain fish species cannot survive without clean water and a healthy habitat (e.g., Blackchin Shiner, Iowa Darter, and Rock Bass), while other species are tolerant of degraded conditions (e.g., Green Sunfish and Common Carp). The FIBI score, composed of several fish community diversity and composition metrics, indicates the overall health of a lake by comparing it to what is expected for a healthy lake. For additional information on the FIBI, search for "lake index of biological integrity" on the mndnr.gov website. Acorn Lake scored 36 with the IBI 4 model. Results from this survey provide evidence that the fish community in Acorn Lake is adversely impacted by stressors, as indicated by an FIBI score just below the impairment threshold for aquatic life use determined for…
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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