Cow Creek Reservoir Fish Stocking
Montana · 1967–2025 on record
According to Montana fish & wildlife agency, Cow Creek Reservoir was last stocked October 6, 2025 with Channel Catfish. Cow Creek Reservoir has 72 stocking records on file, spanning 1967–2025, with about 645,131 fish stocked over that period.
When Cow Creek Reservoir is stocked
Cow Creek Reservoir is typically stocked in summer, most often in June — 23 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Cow Creek Reservoir, freshest activity first.
Dry Blood Reservoir
13 mi2 species · 18 records
Last stocked October 2025
South Fork Blood Reservoir
11 mi1 species · 26 records
Last stocked August 2025
Payola Reservoir
13 mi1 species · 33 records
Last stocked August 2025
Petrolia Reservoir
10 mi8 species · 74 records
Last stocked June 2025
Box Elder Creek Reservoir
7 mi2 species · 54 records
Last stocked June 2025
Manuel Reservoir #2
6 mi1 species · 37 records
Last stocked May 2024
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| October 6, 2025 | Channel Catfish | 285 | 2.26" | Montana fish & wildlife agency |
| June 25, 2024 | Walleye | 3,777 | 1.47" | Montana fish & wildlife agency |
| June 30, 2022 | Walleye | 3,000 | 1.4" | Montana fish & wildlife agency |
| June 24, 2022 | Tiger Trout | 260 | 4.98" | Montana fish & wildlife agency |
| June 24, 2022 | Yellow Perch | 33,000 | 0.85" | Montana fish & wildlife agency |
| September 9, 2021 | Channel Catfish | 5,000 | 1.91" | Montana fish & wildlife agency |
| August 20, 2020 | Channel Catfish | 5,000 | 1.63" | Montana fish & wildlife agency |
| June 23, 2020 | Walleye | 3,203 | 1.72" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 6, 2019 | Channel Catfish | 1,420 | 2.11" | Montana fish & wildlife agency |
| July 11, 2019 | Yellow Perch | 20,000 | 1.24" | Montana fish & wildlife agency |
| July 8, 2019 | Tiger Trout | 1,000 | 4.93" | Montana fish & wildlife agency |
| June 29, 2018 | Walleye | 3,000 | 2.08" | Montana fish & wildlife agency |
| June 29, 2016 | Walleye | 3,004 | 1.69" | Montana fish & wildlife agency |
| August 3, 2015 | Tiger Trout | 400 | 5" | Montana fish & wildlife agency |
| June 26, 2014 | Walleye | 5,000 | 1.57" | Montana fish & wildlife agency |
| October 20, 2010 | Tiger Trout | 50 | 12.02" | Montana fish & wildlife agency |
| June 30, 2010 | Walleye | 4,999 | 1.62" | Montana fish & wildlife agency |
| June 30, 2008 | Walleye | 5,108 | 1.94" | Montana fish & wildlife agency |
| July 10, 2007 | Walleye | 5,084 | 1.9" | Montana fish & wildlife agency |
| May 3, 2007 | Tiger Trout | 820 | 7.7" | Montana fish & wildlife agency |
| June 22, 2006 | Walleye | 7,805 | 1.86" | Montana fish & wildlife agency |
| June 2, 2006 | Tiger Trout | 2,000 | 2.6" | Montana fish & wildlife agency |
| September 19, 2005 | Channel Catfish | 3,000 | 6.3" | Montana fish & wildlife agency |
| June 23, 2005 | Walleye | 7,000 | 1.6" | Montana fish & wildlife agency |
| July 13, 2004 | Tiger Trout | 1,600 | 3.2" | Montana fish & wildlife agency |
| September 16, 2003 | Channel Catfish | 3,000 | 4.5" | Montana fish & wildlife agency |
| June 13, 2002 | Tiger Trout | 4,000 | 1.7" | Montana fish & wildlife agency |
| September 19, 2001 | Channel Catfish | 4,000 | 2.3" | Montana fish & wildlife agency |
| August 21, 2001 | Walleye | 1,800 | 3.2" | Montana fish & wildlife agency |
| June 14, 2001 | Walleye | 7,000 | 3.5" | Montana fish & wildlife agency |
| August 8, 2000 | Tiger Trout | 3,000 | 5.4" | Montana fish & wildlife agency |
| August 8, 2000 | Walleye | 5,000 | 2.6" | Montana fish & wildlife agency |
| May 9, 2000 | Walleye | 200,000 | 0.2" | Montana fish & wildlife agency |
| September 29, 1999 | Tiger Trout | 42 | 9" | Montana fish & wildlife agency |
| July 20, 1999 | Tiger Trout | 1,728 | 4.6" | Montana fish & wildlife agency |
| May 28, 1999 | Black Crappie | 201 | 8" | Montana fish & wildlife agency |
| October 6, 1998 | Tiger Trout | 1,650 | 7" | Montana fish & wildlife agency |
| July 30, 1998 | Tiger Trout | 3,000 | 5.1" | Montana fish & wildlife agency |
| July 30, 1998 | Channel Catfish | 6,500 | 3.3" | Montana fish & wildlife agency |
| May 1, 1998 | Walleye | 200,000 | 0.2" | Montana fish & wildlife agency |
| July 14, 1997 | Tiger Trout | 6,000 | 2.3" | Montana fish & wildlife agency |
| November 7, 1996 | Channel Catfish | 4,000 | 2.8" | Montana fish & wildlife agency |
| June 25, 1996 | Walleye | 7,000 | 1.7" | Montana fish & wildlife agency |
| June 15, 1995 | Walleye | 6,000 | 1.3" | Montana fish & wildlife agency |
| September 8, 1994 | Channel Catfish | 10,000 | 3" | Montana fish & wildlife agency |
| June 14, 1994 | Walleye | 6,000 | 1.5" | Montana fish & wildlife agency |
| April 24, 1986 | Rainbow Trout | 2,007 | 6" | Montana fish & wildlife agency |
| April 17, 1984 | Rainbow Trout | 2,024 | 7" | Montana fish & wildlife agency |
| April 20, 1983 | Rainbow Trout | 2,080 | 8" | Montana fish & wildlife agency |
| April 23, 1982 | Rainbow Trout | 2,002 | 7" | Montana fish & wildlife agency |
Showing 50 of 72 stocking records.
Frequently asked
When was Cow Creek Reservoir last stocked?
According to Montana fish & wildlife agency, Cow Creek Reservoir was last stocked October 6, 2025 with Channel Catfish.
What fish species are stocked in Cow Creek Reservoir?
Cow Creek Reservoir is stocked with Channel Catfish, Walleye, Tiger Trout, Yellow Perch, Black Crappie, Rainbow Trout, and Brook Trout.
What time of year is Cow Creek Reservoir stocked?
Cow Creek Reservoir is typically stocked in summer, most often in June.
How often is Cow Creek Reservoir stocked?
Cow Creek Reservoir has been stocked about 1 times a year — 72 recorded stockings between 1967 and 2025.
How many fish have been stocked in Cow Creek Reservoir?
About 645,131 fish have been stocked in Cow Creek Reservoir across 72 recorded events since 1967, per Montana fish & wildlife agency.
What size are the fish stocked in Cow Creek Reservoir?
Fish stocked in Cow Creek Reservoir average about 5.1 inches, based on the sizes the agency reported.