Cow Creek Reservoir fishing

Fishing at Cow Creek Reservoir has Walleye, Tiger Muskie, Yellow Perch, and Channel Catfish on the stocking report. 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, dawn, day, and dusk for Yellow Perch, and dusk and night for Channel Catfish.

Last stocked

October 6, 2025

Plants on record

15

Since 2014

Species recorded

4

Average size

2.3 in

Elevation

3,710.6 ft

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How Cow Creek Reservoir is stocked

The first plant of the year usually falls in the last week of June. In 2025 it was October 6, 2025, later than usual.

No plants recorded in 2017 and 2023.

Fish at Cow Creek Reservoir

Fishing Cow Creek Reservoir is most likely to be for Walleye. Walleye accounts for 6 of 15 plants on record, ahead of Channel Catfish and 2 more.

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 6 plants
Plants
6 of 15
Last stocked
June 25, 2024
Average length
1.7 in

Seasons and rigs are on the Walleye guide.

Channel Catfish 4 plants
Plants
4 of 15
Last stocked
October 6, 2025
Average length
2 in

Seasons and rigs are on the Channel Catfish guide.

Tiger Muskie 3 plants
Plants
3 of 15
Last stocked
June 24, 2022
Average length
5 in

Seasons and rigs are on the Tiger Muskie guide.

Yellow Perch 2 plants
Plants
2 of 15
Last stocked
June 24, 2022
Average length
1 in

Seasons and rigs are on the Yellow Perch guide.

Fish stocked per year

  • 5,0002014
  • 4002015
  • 3,0042016
  • 3,0002018
  • 22,4202019
  • 8,2032020
  • 5,0002021
  • 36,2602022
  • 3,7772024
  • 2852025

Stocking history

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
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

Species stocked here

Depth-by-season, top lures, and bait notes for each species stocked here are on its own species guide, linked above.

Nearest lakes