Mary Lake (Todd County)
Todd County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 77001900
DNR records show 8 stocking entries at Mary Lake (Todd County) since 2017, most recently walleye adults in 2025 (77 fish).
- Mary Lake (Todd County) has 8 DNR stocking records across 8 years (2017-2025): walleye (8).
- The most-stocked species by count is walleye: 102,992 fish on record.
- Maximum depth 58 ft; surface area 129 acres, 39 littoral acres, 4.5 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 7.6 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, common carp, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, and 3 more.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (standard survey).
- Todd County, nearest town Upsala; DNR lake number (DOW) 77001900.
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 | adults | 77 | 98.0 |
| 2024 | Walleye | adults | 22 | 16.0 |
| 2023 | Walleye | fingerlings | 576 | 64.0 |
| 2022 | Walleye | fry | 50,000 | 0.5 |
| 2021 | Walleye | fingerlings | 696 | 58.0 |
| 2019 | Walleye | fingerlings | 1,325 | 53.0 |
| 2018 | Walleye | fry | 50,000 | 0.5 |
| 2017 | Walleye | fingerlings | 296 | 74.0 |
Public accesses
| Type | Owner | Where |
|---|---|---|
| concrete ramp | Minnesota DNR | STATE OWNED ACCESS ON NORTHEAST END OF LAKE - Located on NE side of lake - good shape - decent depth |
DNR fish survey, 2025
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Black bullhead | Standard trap nets | 431.00 | 3,879 | 0.00 |
| Bluegill | Standard trap nets | 28.11 | 253 | 0.37 |
| Hybrid sunfish | Standard trap nets | 5.22 | 47 | 0.22 |
| Black crappie | Standard trap nets | 3.33 | 30 | 0.24 |
| Northern pike | Standard trap nets | 2.67 | 24 | 1.33 |
| Brown bullhead | Standard trap nets | 2.33 | 21 | 0.27 |
| Pumpkinseed | Standard trap nets | 0.89 | 8 | 0.19 |
| Yellow bullhead | Standard trap nets | 0.56 | 5 | 0.33 |
| Black bullhead | Standard gill nets | 80.83 | 485 | 0.03 |
| Northern pike | Standard gill nets | 25.00 | 150 | 1.82 |
| Black crappie | Standard gill nets | 1.50 | 9 | 0.16 |
| Walleye | Standard gill nets | 0.50 | 3 | 2.68 |
| Yellow bullhead | Standard gill nets | 0.17 | 1 | 0.34 |
| White sucker | Standard gill nets | 0.17 | 1 | 2.00 |
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.
Mary Lake (DOW# 77-0019-00; Lake Class 34) is a 129-acre lake located near Upsala, Minnesota. A Minnesota Department of Natural Resources (MNDNR) owned concrete boat ramp is located on the northeast shore. Mary Lake has 4.52 miles of shoreline and a maximum depth of 58 feet. The lake is primarily managed for Bluegill and Northern Pike and secondarily for Walleye, Black Crappie, and Largemouth Bass. The lake was initially surveyed in 1969, and 16 fish sampling surveys or investigations have occurred since then. A standard survey using six gill nets and nine standard trap nets was completed on Mary Lake during the week of June 30,2025. Gill netting captured a total of six species; the most abundant species being captured were Black Bullheads at 485 and Northern Pike at 150. Northern Pike ranged in size from 15.6 to 33.8 inches. Other species included Black Crappies, Walleye, White Sucker, and Yellow Bullhead. The average size for Walleye captured was 19.9 inches. Trap nets caught a total of fourteen species, the most abundant being Black Bullheads. Bluegills were the second highest species captured at 28.11 fish per trap net which is high for this type of lake, this is very encouraging after the 2023 winterkill. A 5 fish bag limit for sunfish was implemented on Mary Lake in 2021 as part of the statewide Quality Sunfish Initiative. Other species that were captured were Northern Pike, Hybrid Sunfish, and Black Crappie. The Northern Pike population continues to be mostly in the range of 18 to 21 inches with a few above 30 inches. Black Crappies averaged 5.5 to 6 inches.
Minnesota DNR survey narrative, .
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