Cook Reservoir 1 Fish Stocking
Montana · 1966–1997 on record
According to Montana fish & wildlife agency, Cook Reservoir 1 was last stocked June 16, 1997 with Rainbow Trout. Cook Reservoir 1 has 19 stocking records on file, spanning 1966–1997, with about 22,266 fish stocked over that period.
When Cook Reservoir 1 is stocked
Cook Reservoir 1 is typically stocked in summer, most often in June — 14 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Cook Reservoir 1, freshest activity first.
Gipsy Lake
8 mi2 species · 65 records
Last stocked June 2026
Cook Reservoir 2
1 mi1 species · 39 records
Last stocked May 2026
Grace Lake
9 mi1 species · 27 records
Last stocked September 2025
Upper Baldy Lake
9 mi1 species · 29 records
Last stocked September 2025
Newlan Creek
9 mi3 species · 30 records
Last stocked July 2012
Schafer Pond
7 mi1 species · 6 records
Last stocked May 1992
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 16, 1997 | Rainbow Trout | 1,260 | 4.2" | Montana fish & wildlife agency |
| June 12, 1996 | Rainbow Trout | 1,210 | 4.1" | Montana fish & wildlife agency |
| June 2, 1995 | Rainbow Trout | 1,028 | 4.1" | Montana fish & wildlife agency |
| June 15, 1994 | Rainbow Trout | 1,017 | 4.2" | Montana fish & wildlife agency |
| June 14, 1993 | Rainbow Trout | 1,000 | 3.9" | Montana fish & wildlife agency |
| May 26, 1992 | Rainbow Trout | 1,022 | 3.9" | Montana fish & wildlife agency |
| June 11, 1991 | Rainbow Trout | 1,000 | 4.5" | Montana fish & wildlife agency |
| June 15, 1990 | Rainbow Trout | 1,015 | 4.4" | Montana fish & wildlife agency |
Show 11 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 28, 1989 | Rainbow Trout | 968 | 4.8" | Montana fish & wildlife agency |
| June 6, 1988 | Rainbow Trout | 1,000 | 4.8" | Montana fish & wildlife agency |
| June 4, 1987 | Rainbow Trout | 1,076 | 4.6" | Montana fish & wildlife agency |
| June 18, 1986 | Rainbow Trout | 1,046 | 5" | Montana fish & wildlife agency |
| May 14, 1985 | Rainbow Trout | 1,006 | 4" | Montana fish & wildlife agency |
| June 8, 1984 | Rainbow Trout | 1,007 | 4" | Montana fish & wildlife agency |
| June 2, 1983 | Rainbow Trout | 1,015 | 4" | Montana fish & wildlife agency |
| July 20, 1982 | Rainbow Trout | 1,018 | 8" | Montana fish & wildlife agency |
| September 14, 1977 | Cutthroat Trout | 1,578 | 3" | Montana fish & wildlife agency |
| June 18, 1968 | Rainbow Trout | 1,500 | 5" | Montana fish & wildlife agency |
| May 5, 1966 | Rainbow Trout | 2,500 | 3" | Montana fish & wildlife agency |
Frequently asked
When was Cook Reservoir 1 last stocked?
According to Montana fish & wildlife agency, Cook Reservoir 1 was last stocked June 16, 1997 with Rainbow Trout.
What fish species are stocked in Cook Reservoir 1?
Cook Reservoir 1 is stocked with Rainbow Trout and Cutthroat Trout.
What time of year is Cook Reservoir 1 stocked?
Cook Reservoir 1 is typically stocked in summer, most often in June.
How often is Cook Reservoir 1 stocked?
Cook Reservoir 1 is stocked intermittently — 19 recorded stockings between 1966 and 1997.
How many fish have been stocked in Cook Reservoir 1?
About 22,266 fish have been stocked in Cook Reservoir 1 across 19 recorded events since 1966, per Montana fish & wildlife agency.
What size are the fish stocked in Cook Reservoir 1?
Fish stocked in Cook Reservoir 1 average about 4.4 inches, based on the sizes the agency reported.