Hatfield Reservoir Fish Stocking
Montana · 1968–2025 on record
According to Montana fish & wildlife agency, Hatfield Reservoir was last stocked June 9, 2025 with Rainbow Trout. Hatfield Reservoir has 55 stocking records on file, spanning 1968–2025, with about 154,122 fish stocked over that period.
When Hatfield Reservoir is stocked
Hatfield Reservoir is typically stocked in spring, most often in April — 29 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Hatfield Reservoir, freshest activity first.
Raymond Dam
24 mi8 species · 57 records
Last stocked August 2025
Boxelder Lake
24 mi5 species · 115 records
Last stocked June 2025
Holtan Reservoir
13 mi3 species · 36 records
Last stocked June 2025
Danelson Reservoir
12 mi3 species · 35 records
Last stocked July 2024
Stentoft Reservoir
18 mi1 species · 36 records
Last stocked April 2016
Chabot Reservoir
21 mi1 species · 40 records
Last stocked May 2010
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 9, 2025 | Rainbow Trout | 1,000 | 7.03" | Montana fish & wildlife agency |
| May 15, 2024 | Rainbow Trout | 3,000 | 2.92" | Montana fish & wildlife agency |
| May 17, 2023 | Rainbow Trout | 3,000 | 2.63" | Montana fish & wildlife agency |
| May 11, 2022 | Rainbow Trout | 3,000 | 3.25" | Montana fish & wildlife agency |
| May 20, 2020 | Rainbow Trout | 3,113 | 3.23" | Montana fish & wildlife agency |
| May 14, 2019 | Rainbow Trout | 3,000 | 2.65" | Montana fish & wildlife agency |
| May 4, 2018 | Rainbow Trout | 3,000 | 2.38" | Montana fish & wildlife agency |
| April 14, 2017 | Rainbow Trout | 3,000 | 2.02" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| April 8, 2016 | Rainbow Trout | 3,000 | 2.09" | Montana fish & wildlife agency |
| April 17, 2015 | Rainbow Trout | 3,000 | 2.04" | Montana fish & wildlife agency |
| April 17, 2014 | Rainbow Trout | 3,000 | 2.1" | Montana fish & wildlife agency |
| June 13, 2013 | Rainbow Trout | 2,994 | 3.05" | Montana fish & wildlife agency |
| May 9, 2012 | Rainbow Trout | 3,000 | 2.71" | Montana fish & wildlife agency |
| June 2, 2011 | Rainbow Trout | 3,000 | 3.36" | Montana fish & wildlife agency |
| May 19, 2010 | Rainbow Trout | 3,000 | 3.59" | Montana fish & wildlife agency |
| April 22, 2009 | Rainbow Trout | 3,010 | 3" | Montana fish & wildlife agency |
| April 23, 2008 | Rainbow Trout | 3,002 | 3.35" | Montana fish & wildlife agency |
| April 17, 2007 | Rainbow Trout | 2,995 | 3.07" | Montana fish & wildlife agency |
| April 27, 2006 | Rainbow Trout | 3,255 | 3.21" | Montana fish & wildlife agency |
| April 25, 2005 | Rainbow Trout | 3,000 | 3.22" | Montana fish & wildlife agency |
| April 26, 2004 | Rainbow Trout | 2,975 | 3.14" | Montana fish & wildlife agency |
| April 28, 2003 | Rainbow Trout | 3,038 | 3.18" | Montana fish & wildlife agency |
| May 1, 2002 | Rainbow Trout | 2,985 | 3.4" | Montana fish & wildlife agency |
| April 26, 2001 | Rainbow Trout | 3,003 | 3" | Montana fish & wildlife agency |
| April 21, 2000 | Rainbow Trout | 3,023 | 3.3" | Montana fish & wildlife agency |
| April 26, 1999 | Rainbow Trout | 3,016 | 3.6" | Montana fish & wildlife agency |
| April 28, 1998 | Rainbow Trout | 883 | 2.9" | Montana fish & wildlife agency |
| April 28, 1998 | Rainbow Trout | 2,118 | 3.9" | Montana fish & wildlife agency |
| April 27, 1997 | Rainbow Trout | 3,028 | 3.3" | Montana fish & wildlife agency |
| April 22, 1996 | Rainbow Trout | 3,350 | 2.6" | Montana fish & wildlife agency |
| April 18, 1995 | Rainbow Trout | 3,103 | 2.9" | Montana fish & wildlife agency |
| April 19, 1994 | Rainbow Trout | 3,010 | 3.1" | Montana fish & wildlife agency |
| April 13, 1990 | Rainbow Trout | 2,500 | 2.8" | Montana fish & wildlife agency |
| May 2, 1989 | Rainbow Trout | 3,133 | 3.6" | Montana fish & wildlife agency |
| April 7, 1988 | Rainbow Trout | 3,024 | 3.4" | Montana fish & wildlife agency |
| April 14, 1987 | Rainbow Trout | 3,006 | 3.3" | Montana fish & wildlife agency |
| May 27, 1986 | Rainbow Trout | 3,045 | 4" | Montana fish & wildlife agency |
| May 4, 1985 | Rainbow Trout | 3,016 | 4" | Montana fish & wildlife agency |
| May 10, 1984 | Rainbow Trout | 3,007 | 4" | Montana fish & wildlife agency |
| May 3, 1983 | Rainbow Trout | 3,016 | 7" | Montana fish & wildlife agency |
| May 3, 1982 | Rainbow Trout | 3,002 | 4" | Montana fish & wildlife agency |
| April 14, 1981 | Rainbow Trout | 3,007 | 4" | Montana fish & wildlife agency |
| May 1, 1980 | Rainbow Trout | 3,489 | 4" | Montana fish & wildlife agency |
| July 2, 1979 | Rainbow Trout | 3,005 | 5" | Montana fish & wildlife agency |
| June 14, 1978 | Rainbow Trout | 3,060 | 5" | Montana fish & wildlife agency |
| April 18, 1977 | Rainbow Trout | 2,508 | 4" | Montana fish & wildlife agency |
| April 21, 1976 | Rainbow Trout | 2,496 | 5" | Montana fish & wildlife agency |
| June 4, 1975 | Rainbow Trout | 2,520 | 5" | Montana fish & wildlife agency |
| May 6, 1974 | Rainbow Trout | 2,520 | 4" | Montana fish & wildlife agency |
| May 1, 1973 | Rainbow Trout | 2,178 | 2" | Montana fish & wildlife agency |
Showing 50 of 55 stocking records.
Frequently asked
When was Hatfield Reservoir last stocked?
According to Montana fish & wildlife agency, Hatfield Reservoir was last stocked June 9, 2025 with Rainbow Trout.
What fish species are stocked in Hatfield Reservoir?
Hatfield Reservoir is stocked with Rainbow Trout.
What time of year is Hatfield Reservoir stocked?
Hatfield Reservoir is typically stocked in spring, most often in April.
How often is Hatfield Reservoir stocked?
Hatfield Reservoir is stocked intermittently — 55 recorded stockings between 1968 and 2025.
How many fish have been stocked in Hatfield Reservoir?
About 154,122 fish have been stocked in Hatfield Reservoir across 55 recorded events since 1968, per Montana fish & wildlife agency.
What size are the fish stocked in Hatfield Reservoir?
Fish stocked in Hatfield Reservoir average about 3.4 inches, based on the sizes the agency reported.