Hassler Reservoir Fish Stocking
Montana · 1965–2014 on record
According to Montana fish & wildlife agency, Hassler Reservoir was last stocked May 2, 2014 with Rainbow Trout. Hassler Reservoir has 49 stocking records on file, spanning 1965–2014, with about 48,244 fish stocked over that period.
When Hassler Reservoir is stocked
Hassler Reservoir is typically stocked in spring, most often in May — 21 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Hassler Reservoir, freshest activity first.
Anita Reservoir
17 mi7 species · 54 records
Last stocked August 2025
Hopalong Reservoir
15 mi1 species · 11 records
Last stocked July 2008
Rindel Pond
8 mi4 species · 37 records
Last stocked May 1999
Styer Pond
14 mi1 species · 1 records
Last stocked July 1986
Styer Reservoir
10 mi1 species · 2 records
Last stocked June 1986
Clarke Reservoir
16 mi3 species · 17 records
Last stocked April 1971
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| May 2, 2014 | Rainbow Trout | 200 | 6.93" | Montana fish & wildlife agency |
| May 17, 2013 | Rainbow Trout | 200 | 7.75" | Montana fish & wildlife agency |
| April 16, 2012 | Rainbow Trout | 203 | 7" | Montana fish & wildlife agency |
| May 17, 2011 | Rainbow Trout | 201 | 7.11" | Montana fish & wildlife agency |
| May 17, 2010 | Rainbow Trout | 201 | 7.61" | Montana fish & wildlife agency |
| May 19, 2009 | Rainbow Trout | 201 | 8" | Montana fish & wildlife agency |
| May 7, 2008 | Rainbow Trout | 196 | 7.74" | Montana fish & wildlife agency |
| May 4, 2006 | Rainbow Trout | 163 | 6.96" | Montana fish & wildlife agency |
Show 41 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| May 4, 2006 | Rainbow Trout | 47 | 8.47" | Montana fish & wildlife agency |
| May 24, 2005 | Rainbow Trout | 978 | 3.52" | Montana fish & wildlife agency |
| June 16, 2004 | Rainbow Trout | 984 | 4.55" | Montana fish & wildlife agency |
| May 28, 2003 | Rainbow Trout | 994 | 3.69" | Montana fish & wildlife agency |
| June 6, 2002 | Rainbow Trout | 998 | 4.2" | Montana fish & wildlife agency |
| May 22, 2001 | Rainbow Trout | 996 | 3.8" | Montana fish & wildlife agency |
| June 6, 2000 | Rainbow Trout | 1,002 | 4" | Montana fish & wildlife agency |
| May 26, 1999 | Rainbow Trout | 1,021 | 4" | Montana fish & wildlife agency |
| June 4, 1998 | Rainbow Trout | 1,026 | 4" | Montana fish & wildlife agency |
| June 3, 1997 | Rainbow Trout | 1,050 | 4.1" | Montana fish & wildlife agency |
| May 21, 1996 | Rainbow Trout | 1,056 | 5.1" | Montana fish & wildlife agency |
| May 3, 1995 | Rainbow Trout | 1,100 | 3.9" | Montana fish & wildlife agency |
| May 2, 1994 | Rainbow Trout | 1,022 | 4.3" | Montana fish & wildlife agency |
| May 3, 1993 | Rainbow Trout | 1,007 | 4.7" | Montana fish & wildlife agency |
| April 27, 1992 | Rainbow Trout | 1,065 | 4" | Montana fish & wildlife agency |
| May 7, 1991 | Rainbow Trout | 1,000 | 4.5" | Montana fish & wildlife agency |
| April 19, 1990 | Rainbow Trout | 1,085 | 4.2" | Montana fish & wildlife agency |
| April 19, 1989 | Rainbow Trout | 979 | 4.2" | Montana fish & wildlife agency |
| April 20, 1988 | Rainbow Trout | 1,000 | 4.3" | Montana fish & wildlife agency |
| May 6, 1987 | Rainbow Trout | 1,541 | 3.8" | Montana fish & wildlife agency |
| April 21, 1986 | Rainbow Trout | 1,502 | 4" | Montana fish & wildlife agency |
| April 17, 1985 | Rainbow Trout | 1,501 | 5" | Montana fish & wildlife agency |
| April 20, 1984 | Rainbow Trout | 1,504 | 7" | Montana fish & wildlife agency |
| May 25, 1983 | Rainbow Trout | 1,020 | 4" | Montana fish & wildlife agency |
| May 6, 1982 | Rainbow Trout | 1,504 | 5" | Montana fish & wildlife agency |
| April 16, 1981 | Rainbow Trout | 1,028 | 4" | Montana fish & wildlife agency |
| June 17, 1980 | Rainbow Trout | 1,526 | 6" | Montana fish & wildlife agency |
| June 6, 1979 | Rainbow Trout | 1,500 | 5" | Montana fish & wildlife agency |
| June 15, 1978 | Rainbow Trout | 1,530 | 6" | Montana fish & wildlife agency |
| April 19, 1977 | Rainbow Trout | 1,508 | 4" | Montana fish & wildlife agency |
| April 21, 1976 | Rainbow Trout | 1,512 | 4" | Montana fish & wildlife agency |
| June 24, 1975 | Rainbow Trout | 1,500 | 5" | Montana fish & wildlife agency |
| April 8, 1974 | Rainbow Trout | 1,550 | 4" | Montana fish & wildlife agency |
| August 15, 1973 | Rainbow Trout | 484 | 11" | Montana fish & wildlife agency |
| April 4, 1973 | Rainbow Trout | 1,536 | 4" | Montana fish & wildlife agency |
| November 12, 1972 | Rainbow Trout | 1,168 | 6" | Montana fish & wildlife agency |
| April 24, 1967 | Rainbow Trout | 1,500 | 5" | Montana fish & wildlife agency |
| August 3, 1966 | Rainbow Trout | 979 | 8" | Montana fish & wildlife agency |
| April 18, 1966 | Rainbow Trout | 875 | 9" | Montana fish & wildlife agency |
| August 10, 1965 | Rainbow Trout | 1,000 | 7" | Montana fish & wildlife agency |
| May 18, 1965 | Rainbow Trout | 501 | 8" | Montana fish & wildlife agency |
Frequently asked
When was Hassler Reservoir last stocked?
According to Montana fish & wildlife agency, Hassler Reservoir was last stocked May 2, 2014 with Rainbow Trout.
What fish species are stocked in Hassler Reservoir?
Hassler Reservoir is stocked with Rainbow Trout.
What time of year is Hassler Reservoir stocked?
Hassler Reservoir is typically stocked in spring, most often in May.
How often is Hassler Reservoir stocked?
Hassler Reservoir is stocked intermittently — 49 recorded stockings between 1965 and 2014.
How many fish have been stocked in Hassler Reservoir?
About 48,244 fish have been stocked in Hassler Reservoir across 49 recorded events since 1965, per Montana fish & wildlife agency.
What size are the fish stocked in Hassler Reservoir?
Fish stocked in Hassler Reservoir average about 5.5 inches, based on the sizes the agency reported.