Lake Monongalia
Kandiyohi County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 34015800
DNR records show 6 stocking entries at Lake Monongalia since 2018, most recently walleye fry in 2025 (445,897 fish).
- Lake Monongalia has 6 DNR stocking records across 6 years (2018-2025): walleye (5), yellow perch (1).
- The most-stocked species by count is walleye: 1,544,497 fish on record.
- Maximum depth 14 ft, mean depth 4 ft; surface area 2,290 acres, 2,271 littoral acres, 37.8 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 8.9 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, bowfin (dogfish), common carp, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, white sucker, yellow bullhead, and 1 more.
- 7 public accesses on the DNR list.
- Most recent DNR fish survey: (targeted survey).
- Kandiyohi County, nearest town New London; DNR lake number (DOW) 34015800.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2025 | Walleye | fry | 445,897 | 4.4 |
| 2024 | Walleye | fry | 252,876 | 2.6 |
| 2023 | Walleye | fry | 360,128 | 3.4 |
| 2022 | Walleye | fry | 150,406 | 1.4 |
| 2019 | Walleye | fry | 335,190 | 3.0 |
| 2018 | Yellow Perch | adults | 360 | 90.0 |
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 |
|---|---|---|
| concrete ramp | Minnesota DNR | Access along the north side of Mud Lake basin; off of County Rd #33. - Limited Parking. Access lake via the Middle Fork of Crow River channel. |
| concrete ramp | Minnesota DNR | Access in Middle Fork Crow Reservoir basin; located in the east Mill Pond within the City of New London; off of State Highway #9. |
| concrete ramp | county | Access in the Middle Fork Crow Reservoir basin; located 0.5 miles north of New London and west of County Road #9. |
| concrete ramp | TOW | Access in Middle Fork of Crow Reservoir basin; located in New London adjacent to the cemetery and Joe Neer bridge; north of County Road #9. - Limited parking. |
| concrete ramp | PRI | Access in Middle Fork Crow Reservoir; downstream of Mud Lake basin; east side of Dilley's Grade and County Road #9. |
| PU | Minnesota DNR | Fishing Pier located within the City of New London near Access #1 within the east Mill Pond. |
| S | city | Rodvick Park. Shore fishing area with a dock. Located on the east side of County Road #9 north of New London. Across the road from Access #3. - City park with a dock. |
DNR fish survey, 2023
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Yellow bullhead | Standard trap nets | 24.25 | 97 | 0.13 |
| Pumpkinseed | Standard trap nets | 4.50 | 18 | 0.17 |
| Black bullhead | Standard trap nets | 4.00 | 16 | 0.29 |
| Northern pike | Standard trap nets | 2.75 | 11 | 2.62 |
| Black crappie | Standard trap nets | 0.50 | 2 | 0.87 |
| Bowfin (dogfish) | Standard trap nets | 0.25 | 1 | 2.54 |
| White sucker | Standard trap nets | 0.25 | 1 | 3.28 |
| Hybrid sunfish | Standard trap nets | 0.25 | 1 | 0.23 |
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 trapnet survey of Middle Fork Crow Reservoir "MFCR", also known as Monongalia or Mud Lake, was conducted in early June of 2023. The purpose of the survey was to determine the extent of a partial winterkill in February/March of 2023. Four lake survey trapnets were set at standard stations. At least one trapnet was set in each major basin (Mill Pond, Lower Reservoir, Upper Reservoir and Mud). The surface water temperature was 78.6 F. The water was slightly turbid with a brown stained color. Submergent vegetation density was light. Moderate stands of yellow waterlily were present. Filamentous algae blooms were not apparent during the 2023 early June survey unlike other years. A targeted survey is generally used for sampling a specific kind of fish or time of year (i.e. spawning season, fall season, etc.) unlike a standard survey which samples a wider range of fish species during the summer months using standard methodology (i.e. standard time of year, set sampling stations, taking water clarity readings and oxygen/temperature profiles, etc.) and gears (i.e. lake survey gillnets, trapnets and possibly spring electrofishing for Largemouth Bass). MFCR is a large (1,565 acres) and productive reservoir located in Kandiyohi County with three distinct basins starting upstream to downstream which includes: Mud Lake also known as Monongalia, the reservoir, and the Mill Pond located within the City of New London. In addition, there are multiple smaller bays within these basins. The MFCR maximum depth is 14 feet, which occurs in the Mill Pond basin near the New London Dam. The depth in Mud Lake basin is usually less than 4 feet. The reservoir basin maximum depth is about 6 feet deep. Water quality (total phosphorus=0.036 mg/l) was moderate during June of 2013 for MFCR. Water clarity was good (6.5 feet) on June 8, 2023. A helixor aeration system operates in the mid-portion of the reservoir basin during the winter months. It is adequate at maintaining oxygen levels during mild or low snowfall winters. However, both partial and significant winterkills have been frequent occurrences during winters with abundant snowfall accumulations. The present aeration system is unable to maintain adequate oxygen during these winters due to the large upstream volume of low/no oxygenated water flowing thru the aeration site and downstream portions of the reservoir. Installing a functional aeration system upstream on the Mud basin that maintains adequate oxygen levels is not feasible due to poor bottom substrates (muck), shallow depth, abundant decaying vegetation, poor…
Minnesota DNR survey narrative, .
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Stocking rows, depths, accesses and survey figures are Minnesota DNR LakeFinder data as of 2026-09-02. Regulations, slot limits and special rules are on the DNR page linked above, not here.
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