Yellowtail Afterbay Reservoir Fish Stocking
Montana · 1966–2026 on record
According to Montana fish & wildlife agency, Yellowtail Afterbay Reservoir was last stocked May 6, 2026 with Rainbow Trout. Yellowtail Afterbay Reservoir has 121 stocking records on file, spanning 1966–2026, with about 2,155,409 fish stocked over that period.
When Yellowtail Afterbay Reservoir is stocked
Yellowtail Afterbay Reservoir is typically stocked in spring and summer, most often in May — 26 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Yellowtail Afterbay Reservoir, freshest activity first.
Bighorn Lake
2 mi9 species · 243 records
Last stocked June 2025
Old Anderson Pond
17 mi1 species · 1 records
Last stocked August 2017
Little Bull Elk Creek
8 mi1 species · 4 records
Last stocked May 2013
Lodge Grass Storage Reservoir
20 mi3 species · 129 records
Last stocked May 2008
Dry Head Creek
11 mi2 species · 12 records
Last stocked July 2003
Ten Mile Pond
11 mi2 species · 5 records
Last stocked July 1991
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| May 6, 2026 | Rainbow Trout | 6,239 | 5.1" | Montana fish & wildlife agency |
| April 2, 2025 | Rainbow Trout | 6,649 | 4.5" | Montana fish & wildlife agency |
| April 1, 2025 | Rainbow Trout | 8,311 | 4.3" | Montana fish & wildlife agency |
| May 7, 2024 | Rainbow Trout | 10,173 | 4.65" | Montana fish & wildlife agency |
| May 10, 2023 | Rainbow Trout | 12,970 | 4.65" | Montana fish & wildlife agency |
| May 10, 2021 | Rainbow Trout | 14,960 | 4.41" | Montana fish & wildlife agency |
| August 12, 2020 | Cutthroat Trout | 6,580 | 2.95" | Montana fish & wildlife agency |
| May 13, 2020 | Rainbow Trout | 18,166 | 4.2" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| May 15, 2019 | Rainbow Trout | 20,880 | 4.57" | Montana fish & wildlife agency |
| May 7, 2018 | Rainbow Trout | 23,582 | 4.12" | Montana fish & wildlife agency |
| May 7, 2018 | Rainbow Trout | 23,582 | 4.12" | Montana fish & wildlife agency |
| October 4, 2017 | Rainbow Trout | 952 | 5.4" | Montana fish & wildlife agency |
| August 8, 2017 | Rainbow Trout | 10,611 | 7.26" | Montana fish & wildlife agency |
| August 7, 2017 | Rainbow Trout | 12,646 | 6.92" | Montana fish & wildlife agency |
| April 29, 2016 | Rainbow Trout | 26,432 | 4.05" | Montana fish & wildlife agency |
| October 6, 2015 | Rainbow Trout | 10,410 | 5.06" | Montana fish & wildlife agency |
| May 11, 2015 | Rainbow Trout | 31,552 | 4.18" | Montana fish & wildlife agency |
| May 27, 2014 | Rainbow Trout | 30,566 | 4.41" | Montana fish & wildlife agency |
| May 1, 2013 | Rainbow Trout | 31,025 | 3.89" | Montana fish & wildlife agency |
| July 18, 2012 | Walleye | 36,692 | 2.37" | Montana fish & wildlife agency |
| July 17, 2012 | Walleye | 90,792 | 2.37" | Montana fish & wildlife agency |
| May 2, 2011 | Rainbow Trout | 23,021 | 4.15" | Montana fish & wildlife agency |
| May 17, 2010 | Rainbow Trout | 28,638 | 4.32" | Montana fish & wildlife agency |
| June 20, 2008 | Rainbow Trout | 11,647 | 5.92" | Montana fish & wildlife agency |
| June 18, 2008 | Rainbow Trout | 13,668 | 5.71" | Montana fish & wildlife agency |
| June 12, 2007 | Rainbow Trout | 22,759 | 4.56" | Montana fish & wildlife agency |
| June 6, 2005 | Rainbow Trout | 25,275 | 4.34" | Montana fish & wildlife agency |
| June 2, 2004 | Rainbow Trout | 25,525 | 4.01" | Montana fish & wildlife agency |
| October 29, 2003 | Rainbow Trout | 5,092 | 8.66" | Montana fish & wildlife agency |
| October 29, 2003 | Rainbow Trout | 4,149 | 9.03" | Montana fish & wildlife agency |
| October 28, 2003 | Rainbow Trout | 4,960 | 8.62" | Montana fish & wildlife agency |
| October 27, 2003 | Rainbow Trout | 5,329 | 8.64" | Montana fish & wildlife agency |
| October 2, 2002 | Rainbow Trout | 5,188 | 7.7" | Montana fish & wildlife agency |
| September 27, 2002 | Rainbow Trout | 8,629 | 7.6" | Montana fish & wildlife agency |
| September 27, 2002 | Rainbow Trout | 6,256 | 7.9" | Montana fish & wildlife agency |
| October 25, 2000 | Rainbow Trout | 16,100 | 5.63" | Montana fish & wildlife agency |
| August 18, 1999 | Rainbow Trout | 7,125 | 7.9" | Montana fish & wildlife agency |
| August 17, 1999 | Rainbow Trout | 7,751 | 7.7" | Montana fish & wildlife agency |
| August 16, 1999 | Rainbow Trout | 5,973 | 7.8" | Montana fish & wildlife agency |
| August 19, 1998 | Rainbow Trout | 7,068 | 7.9" | Montana fish & wildlife agency |
| August 17, 1998 | Rainbow Trout | 7,104 | 7.9" | Montana fish & wildlife agency |
| August 17, 1998 | Rainbow Trout | 6,477 | 7.9" | Montana fish & wildlife agency |
| August 13, 1997 | Rainbow Trout | 7,191 | 8.1" | Montana fish & wildlife agency |
| August 12, 1997 | Rainbow Trout | 7,420 | 7.5" | Montana fish & wildlife agency |
| August 11, 1997 | Rainbow Trout | 6,630 | 7.9" | Montana fish & wildlife agency |
| August 14, 1996 | Rainbow Trout | 7,907 | 8.2" | Montana fish & wildlife agency |
| August 12, 1996 | Rainbow Trout | 6,765 | 8.1" | Montana fish & wildlife agency |
| August 12, 1996 | Rainbow Trout | 6,634 | 8.2" | Montana fish & wildlife agency |
| August 31, 1995 | Rainbow Trout | 6,132 | 8.1" | Montana fish & wildlife agency |
| August 30, 1995 | Rainbow Trout | 5,941 | 8.1" | Montana fish & wildlife agency |
Showing 50 of 121 stocking records.
Frequently asked
When was Yellowtail Afterbay Reservoir last stocked?
According to Montana fish & wildlife agency, Yellowtail Afterbay Reservoir was last stocked May 6, 2026 with Rainbow Trout.
What fish species are stocked in Yellowtail Afterbay Reservoir?
Yellowtail Afterbay Reservoir is stocked with Rainbow Trout, Cutthroat Trout, and Walleye.
What time of year is Yellowtail Afterbay Reservoir stocked?
Yellowtail Afterbay Reservoir is typically stocked in spring and summer, most often in May.
How often is Yellowtail Afterbay Reservoir stocked?
Yellowtail Afterbay Reservoir has been stocked about 2 times a year — 121 recorded stockings between 1966 and 2026.
How many fish have been stocked in Yellowtail Afterbay Reservoir?
About 2,155,409 fish have been stocked in Yellowtail Afterbay Reservoir across 121 recorded events since 1966, per Montana fish & wildlife agency.
What size are the fish stocked in Yellowtail Afterbay Reservoir?
Fish stocked in Yellowtail Afterbay Reservoir average about 5.9 inches, based on the sizes the agency reported.