Powder River County, MT
Cow Creek Reservoir
ReservoirPowder River County, MT
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About this water
Cow Creek Reservoir is a reservoir in Powder River County, Montana. State records show it stocked 33 times between 2000 and 2025. The most-stocked species are walleye, tiger muskie and channel catfish, with 1 more on record. 264,780 walleye have gone in across 15 releases.
Stocking history
33 recorded stockings
| Date | Species | Number | Size | Hatchery |
|---|---|---|---|---|
| Oct 6, 2025 | Channel Catfish · Montana | 285 | 2.3" | Miles City Fish Hatchery |
| Jun 25, 2024 | Walleye · Fort Peck | 3,777 | 1.5" | Fort Peck Hatchery |
| Jun 30, 2022 | Walleye · Fort Peck | 3,000 | 1.4" | Fort Peck Hatchery |
| Jun 24, 2022 | Tiger Muskie (Northern X Muskie) · Nebraska | 260 | 5.0" | Miles City Fish Hatchery |
| Jun 24, 2022 | Yellow Perch · Wild | 33,000 | 0.8" | Miles City Fish Hatchery |
| Sep 9, 2021 | Channel Catfish · Montana | 5,000 | 1.9" | Miles City Fish Hatchery |
| Aug 20, 2020 | Channel Catfish · Montana | 5,000 | 1.6" | Miles City Fish Hatchery |
| Jun 23, 2020 | Walleye · Fort Peck | 3,203 | 1.7" | Fort Peck Hatchery |
| Aug 6, 2019 | Channel Catfish · Montana | 1,420 | 2.1" | Miles City Fish Hatchery |
| Jul 11, 2019 | Yellow Perch · Wild | 20,000 | 1.2" | Miles City Fish Hatchery |
| Jul 8, 2019 | Tiger Muskie (Northern X Muskie) · Nebraska | 1,000 | 4.9" | Miles City Fish Hatchery |
| Jun 29, 2018 | Walleye · Fort Peck | 3,000 | 2.1" | Fort Peck Hatchery |
Showing the 12 most recent of 33. Stocking records for Cow Creek Reservoir published by Montana Fish, Wildlife & Parks. Stocking does not guarantee fish are present. Check current regulations and access before you go. See the full Montana stocking report.
