Walleye Stocked · 8 plants · last June 30, 2026 Best: dawn, dusk, night Cow Creek Reservoir fishing
Cow Creek Reservoir fishing is stocked with Walleye, Tiger Muskie, Yellow Perch, and Channel Catfish on a reservoir. Also recorded: Black Crappie, Brook Trout, Largemouth Bass, Northern Pike, Golden Shiner, Flathead Chub, and 8 more. It is stocked about 1.3 times a year since 2014, most often in June and August. Species guides list dawn, dusk, and night for Walleye and Black Crappie, dawn, day, and dusk for Yellow Perch, Brook Trout, and Northern Pike, and dusk and night for Channel Catfish.
- Last stocked
- June 30, 2026
- · Walleye
- Plants on record
- 17
- Since 2014
- Species stocked
- 4 (+14 also recorded)
- Average size
- 2.2 in
- Elevation
- 3,710.6 ft
Fish at Cow Creek Reservoir
Around the dates Cow Creek Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 61.6°F in June, 68.2°F in August, 70.2°F in July, 59.1°F in September. That is air temperature at these coordinates, not water temperature. Open-Meteo
Walleye Stocked · 8 plants · last June 30, 2026 Best: dawn, dusk, night 
Channel Catfish Stocked · 4 plants · last October 6, 2025 Best: dusk, night 
Tiger Muskie Stocked · 3 plants · last June 24, 2022 Last stocked June 24, 2022 · avg 5 in · 3 plants
Tiger Muskie species guide
Yellow Perch Stocked · 2 plants · last June 24, 2022 Best: dawn, day, dusk 
Black Crappie Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
Black Crappie species guide
Brook Trout Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Brook Trout species guide
Largemouth Bass Confirmed present Best: dawn, dusk Best: dawn, dusk
Largemouth Bass species guide
Northern Pike Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Northern Pike species guide Golden Shiner Confirmed present
Flathead Chub Confirmed present
Lake Chub Confirmed present
Brassy Minnow Confirmed present
Fathead Minnow Confirmed present
Longnose Dace Confirmed present
Northern Redbelly Dace Confirmed present
Sand Shiner Confirmed present
Mountain Sucker Confirmed present
White Sucker Confirmed present
How Cow Creek Reservoir is stocked
No plants recorded in 2017 and 2023.
Fish stocked in 2014
5,000
Fish stocked in 2015
400
Fish stocked in 2016
3,004
Fish stocked in 2018
3,000
Fish stocked in 2019
22,420
Fish stocked in 2020
8,203
Fish stocked in 2021
5,000
Fish stocked in 2022
36,260
Fish stocked in 2024
3,777
Fish stocked in 2025
285
Fish stocked in 2026
4,400
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| June 30, 2026 | Walleye | 2,200 | 1.36 in | report |
| June 30, 2026 | Walleye | 2,200 | 1.36 in | report |
| October 6, 2025 | Channel Catfish | 285 | 2.26 in | report |
| June 25, 2024 | Walleye | 3,777 | 1.47 in | report |
| June 30, 2022 | Walleye | 3,000 | 1.4 in | report |
| June 24, 2022 | Yellow Perch | 33,000 | 0.85 in | report |
| June 24, 2022 | Tiger Muskie | 260 | 4.98 in | report |
| September 9, 2021 | Channel Catfish | 5,000 | 1.91 in | report |
| August 20, 2020 | Channel Catfish | 5,000 | 1.63 in | report |
| June 23, 2020 | Walleye | 3,203 | 1.72 in | report |
| August 6, 2019 | Channel Catfish | 1,420 | 2.11 in | report |
| July 11, 2019 | Yellow Perch | 20,000 | 1.24 in | report |
| July 8, 2019 | Tiger Muskie | 1,000 | 4.93 in | report |
| June 29, 2018 | Walleye | 3,000 | 2.08 in | report |
| June 29, 2016 | Walleye | 3,004 | 1.69 in | report |
| August 3, 2015 | Tiger Muskie | 400 | 5 in | report |
| June 26, 2014 | Walleye | 5,000 | 1.57 in | report |
Access and facts
- Water type
- reservoir
- Nearest town
- Cleveland
An 85-acre reservoir on private ranch land. FWP says no landowner permission is needed to fish, but overnight camping needs the landowner's OK. From Cleveland, take Peoples Creek Road west 10 miles, then Lloyd Road south 10 miles; the reservoir is on the left.
Drafted by AI from the cited sources and checked before publishing.
Advisories, closures, regulations and water conditions change. Check the Montana Fish, Wildlife & Parks before you go.
Nearest lakes
Common questions
What fish are at Cow Creek Reservoir?
Fishing Cow Creek Reservoir usually means Walleye: Walleye accounts for 8 of 17 plants on record, ahead of Channel Catfish and 2 more. Walleye was last stocked June 30, 2026, averaging 1.6 in. Channel Catfish was last stocked October 6, 2025, averaging 2 in. Tiger Muskie was last stocked June 24, 2022, averaging 5 in. Yellow Perch was last stocked June 24, 2022, averaging 1 in. Black Crappie, Brook Trout, Largemouth Bass, and Northern Pike, plus 10 more are recorded here outside the stocking reports.
When is Cow Creek Reservoir stocked?
Last stocked June 30, 2026. It is stocked about 1.3 times a year since 2014, most often in June and August. No plants recorded in 2017 and 2023.
How big are the fish stocked at Cow Creek Reservoir?
Stocked fish average 2.2 in. Walleye average 1.6 in. Channel Catfish average 2 in. Tiger Muskie average 5 in. Yellow Perch average 1 in.
How do you get on Cow Creek Reservoir?
The nearest town is Cleveland. An 85-acre reservoir on private ranch land. FWP says no landowner permission is needed to fish, but overnight camping needs the landowner's OK. From Cleveland, take Peoples Creek Road west 10 miles, then Lloyd Road south 10 miles; the reservoir is on the left.
Which lakes near Cow Creek Reservoir were stocked more recently?
Faber Reservoir (14.3 mi) was stocked more recently.