Gervais Lake
Ramsey County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 62000700
DNR records show 19 stocking entries at Gervais Lake since 2017, most recently tiger muskellunge fingerlings in 2025 (234 fish).
- Gervais Lake has 19 DNR stocking records across 9 years (2017-2025): walleye (10), tiger muskellunge (9).
- The most-stocked species by count is tiger muskellunge: 87,455 fish on record.
- Maximum depth 41 ft; surface area 235 acres, 91 littoral acres, 3.3 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 6.0 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, common carp, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, tiger muskellunge, walleye, white sucker, and 2 more.
- 2 public accesses on the DNR list.
- Most recent DNR fish survey: (targeted survey).
- Ramsey County, nearest town Little Canada; DNR lake number (DOW) 62000700.
Depth map
Bathymetric contours from the Minnesota DNR lake survey mapped 7/8/1981 (orig map); depths in feet. Simplified for the web; not for navigation.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2025 | Tiger Muskellunge1 | fingerlings | 234 | 234.0 |
| 2025 | Walleye | yearlings | 75 | 60.0 |
| 2024 | Walleye | fingerlings | 833 | 102.0 |
| 2023 | Tiger Muskellunge2 | fingerlings | 117 | 29.2 |
| 2023 | Tiger Muskellunge2 | yearlings | 117 | 39.0 |
| 2023 | Walleye | fingerlings | 2,807 | 67.0 |
| 2022 | Walleye | yearlings | 46 | 26.0 |
| 2022 | Walleye | fingerlings | 399 | 33.0 |
| 2021 | Tiger Muskellunge | fry | 24,100 | 1.1 |
| 2021 | Tiger Muskellunge2 | fingerlings | 234 | 58.5 |
| 2020 | Walleye | yearlings | 40 | 5.0 |
| 2020 | Walleye | adults | 51 | 72.9 |
| 2019 | Tiger Muskellunge2 | fingerlings | 234 | 72.0 |
| 2019 | Tiger Muskellunge | fry | 5,415 | 0.2 |
| 2019 | Walleye | fingerlings | 1,980 | 60.0 |
| 2018 | Walleye | fingerlings | 2,303 | 49.0 |
| 2017 | Tiger Muskellunge | yearlings | 254 | 147.7 |
| 2017 | Tiger Muskellunge | fry | 56,750 | 1.8 |
| 2017 | Walleye | fingerlings | 1,666 | 59.5 |
1 fish purchased and stocked by private citizens and sporting groups. 2 fish purchased by the DNR for stocking.
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 | county | - COUNTY OWNED ACCESS ON ADJACENT SPOON LAKE PROVIDES NAVIGABLE ACCESS TO GERVAIS. |
| O | county | - Swimming beach; southwest shore of the lake. |
DNR fish survey, 2021
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Bluegill | 50-ft beach seine | 94.33 | 849 | 0.00 |
| Yellow perch | 50-ft beach seine | 10.11 | 91 | 0.00 |
| Largemouth bass | 50-ft beach seine | 9.22 | 83 | 0.00 |
| Pumpkinseed | 50-ft beach seine | 3.44 | 31 | 0.00 |
| Hybrid sunfish | 50-ft beach seine | 2.56 | 23 | 0.00 |
| Green sunfish | 50-ft beach seine | 0.67 | 6 | 0.00 |
| Black crappie | 50-ft beach seine | 0.56 | 5 | 0.00 |
| Johnny darter | 50-ft beach seine | 0.22 | 2 | 0.00 |
| Bluegill | Backpack electrofishing | 39.98 | 39 | 0.00 |
| Yellow bullhead | Backpack electrofishing | 13.33 | 13 | 0.00 |
| Green sunfish | Backpack electrofishing | 12.30 | 12 | 0.00 |
| Hybrid sunfish | Backpack electrofishing | 10.25 | 10 | 0.00 |
| Largemouth bass | Backpack electrofishing | 8.20 | 8 | 0.00 |
| Central mudminnow | Backpack electrofishing | 1.03 | 1 | 0.00 |
| Black bullhead | Backpack electrofishing | 1.03 | 1 | 0.00 |
| Common carp | Backpack electrofishing | 1.03 | 1 | 0.00 |
| Bluegill | Standard trap nets | 21.44 | 193 | 0.12 |
| Black crappie | Standard trap nets | 1.22 | 11 | 0.20 |
| Pumpkinseed | Standard trap nets | 1.00 | 9 | 0.10 |
| Yellow perch | Standard trap nets | 0.22 | 2 | 0.16 |
| Northern pike | Standard trap nets | 0.22 | 2 | 0.74 |
| Common carp | Standard trap nets | 0.22 | 2 | 8.56 |
| Hybrid sunfish | Standard trap nets | 0.11 | 1 | 0.12 |
| Walleye | Standard trap nets | 0.11 | 1 | 3.90 |
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 and littoral fish species in Gervais Lake was conducted beginning on September 7th, 2021 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 10 sampling stations. Similarly, a 50-foot seine was used to sample nine stations, and site conditions (soft sediment and deep water) prevented the use of seines at one station. Nearshore sampling captured 15 species of fish including no species that are intolerant of disturbance and three that is species that are tolerant of disturbance (Black Bullhead, Common Carp, Green Sunfish). A concurrent summer trap net survey was conducted the week of September 7th, 2021 by IBI Program Staff. Nine trap nets were set along the shoreline and in shallow offshore locations that encompassed multiple habitat types. Bluegill comprised a majority of the trap net catch by number and Bluegill and Common Carp accounted for the majority of the biomass. Bluegill count per net was between the 25th and 50th quartile, while the Bluegill mean weight was just below the 25th quartile for similar Lake Class 24 lakes. The nearshore and trap net data were combined with gill net data from a July 2020 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. Banded Killifish, Blackchin Shiner, and Rock Bass), while other species are tolerant of degraded conditions (e.g. Green Sunfish, Black Bullhead, 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. Data from this survey will contribute biological information about the health of the fish community to the Mississippi River-Twin Cities Watershed assessment process in coordination with MN Pollution Control Agency.
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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