Red Rock Lake (Douglas County)
Douglas County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 21029100
DNR records show 7 stocking entries at Red Rock Lake (Douglas County) since 2017, most recently walleye fingerlings in 2025 (8,209 fish).
- Red Rock Lake (Douglas County) has 7 DNR stocking records across 7 years (2017-2025): walleye (7).
- The most-stocked species by count is walleye: 67,524 fish on record.
- Maximum depth 22 ft, mean depth 9 ft; surface area 904 acres, 520 littoral acres, 11.7 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 9.9 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, brown bullhead, common carp, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, yellow bullhead, and 1 more.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (standard survey).
- Douglas County, nearest town Hoffman; DNR lake number (DOW) 21029100.
Depth map
Bathymetric contours from the Minnesota DNR lake survey (get source); depths in feet. Simplified for the web; not for navigation.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2025 | Walleye | fingerlings | 8,209 | 522.0 |
| 2024 | Walleye1 | fingerlings | 6,000 | 200.0 |
| 2023 | Walleye | fingerlings | 11,702 | 520.0 |
| 2022 | Walleye1 | fingerlings | 6,000 | 200.0 |
| 2021 | Walleye | fingerlings | 7,138 | 519.0 |
| 2019 | Walleye | fingerlings | 19,203 | 525.0 |
| 2017 | Walleye | fingerlings | 9,272 | 521.0 |
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 |
DNR fish survey, 2025
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Black crappie | Special trap nets | 86.64 | 953 | 0.37 |
| Bluegill | Special trap nets | 16.00 | 176 | 0.43 |
| Largemouth bass | Standard electrofishing | 36.05 | 31 | 1.67 |
| Yellow perch | Standard gill nets | 9.17 | 110 | 0.19 |
| Walleye | Standard gill nets | 7.67 | 92 | 1.35 |
| Northern pike | Standard gill nets | 6.92 | 83 | 3.01 |
| Black crappie | Standard gill nets | 2.75 | 33 | 0.45 |
| Yellow bullhead | Standard gill nets | 0.83 | 10 | 1.04 |
| Black bullhead | Standard gill nets | 0.17 | 2 | 0.27 |
| Bluegill | Standard gill nets | 0.17 | 2 | 0.61 |
| Brown bullhead | Standard gill nets | 0.08 | 1 | 1.30 |
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.
Red Rock Lake is a 902-acre shallow lake located approximately seven miles northeast of Hoffman. Maximum depth is 22 feet. Average depth is estimated at 9 feet. Water transparency has improved over time, averaging over 10 feet during early summer months since 2010. A trend in increasing water clarity is expected to continue with the discovery of zebra mussels in 2022. The basin's high fertility can cause reductions in water clarity due to algal growth, particularly in late summer and after heavy winds. Most residential development is limited to the north basin of Red Rock Lake. A public access is located along the east shoreline. This access is shallow and launching larger boats during low water levels can be problematic. A standard fisheries survey was completed in 2025 to evaluate abundance and size distribution of gamefish populations. Survey methodology included a spring electrofishing survey, completed May 23, to effectively sample the Largemouth Bass population. The gill netting component of the standard survey was completed June 2-5. In 2022 a special regulation was implemented that reduced the daily sunfish limit from 20 down to 10. As an evaluation requirement of this special regulation, trap netting was conducted during the spring (April 30-May 2) when panfish are more susceptible to capture. These sampling practices will be standard protocol for future fisheries surveys on Red Rock Lake. Red Rock Lake supports a healthy Walleye fishery, which is supplemented with combined fingerling stockings by the MN DNR and private user groups. Gill net catch rates of 7.7 Walleye/net exceeded management objectives and were the highest on record. Walleye grow rapidly in this productive basin and typically reach 15.1 inches by age 3. The largest Walleye was 23.6 inches, and 52% of the Walleyes were larger than 15.0 inches. Northern Pike abundance remained at a desirable level (6.9/gill net). Average length was 23.6 inches. The largest pike measured 33.1 inches. Anglers are reminded that new pike zone regulations were implemented in 2018. Red Rock Lake is located in the North-Central Zone. Anglers can now keep up to 10 pike but not more than two can be over 26 inches in length. All pike between 22-26 inches must be immediately released. Harvesting smaller pike can help shift the population towards larger individuals and reduce the number of predators for young Walleye and other gamefish. Largemouth Bass proved to be moderately abundant. Growth rates are well above average with bass reaching 12.0 inches by age 3. Size structure of the electrofishing catch…
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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