Colwell Reservoir Fish Stocking
Montana · 1963–1983 on record
According to Montana fish & wildlife agency, Colwell Reservoir was last stocked July 23, 1983 with Smallmouth Bass. Colwell Reservoir has 3 stocking records on file, spanning 1963–1983, with about 8,400 fish stocked over that period.
Nearby stocked waters
Other stocked waters near Colwell Reservoir, freshest activity first.
Fort Peck Lake
19 mi16 species · 1842 records
Last stocked July 2025
Medicine Lake
14 mi10 species · 82 records
Last stocked June 2025
McRae Reservoir 1, Jack
15 mi1 species · 34 records
Last stocked May 2025
Trumbo Pond
20 mi3 species · 15 records
Last stocked July 2009
Olsen Pond 1
16 mi1 species · 22 records
Last stocked March 2005
Twitchel Res
10 mi1 species · 4 records
Last stocked April 1999
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| July 23, 1983 | Smallmouth Bass | 1,000 | 2" | Montana fish & wildlife agency |
| June 7, 1977 | Walleye | 5,000 | 1" | Montana fish & wildlife agency |
| November 6, 1963 | Rainbow Trout | 2,400 | 6" | Montana fish & wildlife agency |
Frequently asked
When was Colwell Reservoir last stocked?
According to Montana fish & wildlife agency, Colwell Reservoir was last stocked July 23, 1983 with Smallmouth Bass.
What fish species are stocked in Colwell Reservoir?
Colwell Reservoir is stocked with Smallmouth Bass, Walleye, and Rainbow Trout.
How often is Colwell Reservoir stocked?
Colwell Reservoir is stocked intermittently — 3 recorded stockings between 1963 and 1983.
How many fish have been stocked in Colwell Reservoir?
About 8,400 fish have been stocked in Colwell Reservoir across 3 recorded events since 1963, per Montana fish & wildlife agency.
What size are the fish stocked in Colwell Reservoir?
Fish stocked in Colwell Reservoir average about 3.0 inches, based on the sizes the agency reported.