Castle Lake Fish Stocking
Montana · 1934–2025 on record
According to Montana fish & wildlife agency, Castle Lake was last stocked September 17, 2025 with Cutthroat Trout. Castle Lake has 47 stocking records on file, spanning 1934–2025, with about 101,309 fish stocked over that period.
When Castle Lake is stocked
Castle Lake is typically stocked in summer, most often in August — 25 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Castle Lake, freshest activity first.
East Fork Reservoir
7 mi4 species · 240 records
Last stocked August 2025
Hound Creek Reservoir
6 mi3 species · 22 records
Last stocked June 2015
Wildcat Creek
15 mi2 species · 4 records
Last stocked August 2011
Sheep Creek
13 mi4 species · 276 records
Last stocked September 2008
Mill Coulee
8 mi1 species · 2 records
Last stocked May 1961
Tenderfoot Creek
13 mi3 species · 20 records
Last stocked August 1954
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| September 17, 2025 | Cutthroat Trout | 300 | 12.52" | Montana fish & wildlife agency |
| July 27, 2023 | Cutthroat Trout | 500 | 1.75" | Montana fish & wildlife agency |
| July 20, 2022 | Cutthroat Trout | 1,506 | 1.31" | Montana fish & wildlife agency |
| July 28, 2021 | Cutthroat Trout | 500 | 2" | Montana fish & wildlife agency |
| July 30, 2019 | Cutthroat Trout | 500 | 1.93" | Montana fish & wildlife agency |
| July 20, 2019 | Cutthroat Trout | 1,500 | 1.21" | Montana fish & wildlife agency |
| July 25, 2017 | Cutthroat Trout | 500 | 1.72" | Montana fish & wildlife agency |
| August 24, 2016 | Cutthroat Trout | 94 | 2.2" | Montana fish & wildlife agency |
Show 39 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| July 29, 2015 | Cutthroat Trout | 500 | 1.76" | Montana fish & wildlife agency |
| July 30, 2013 | Cutthroat Trout | 499 | 1.85" | Montana fish & wildlife agency |
| July 30, 2013 | Cutthroat Trout | 499 | 1.85" | Montana fish & wildlife agency |
| August 10, 2011 | Cutthroat Trout | 500 | 1.8" | Montana fish & wildlife agency |
| August 17, 2010 | Cutthroat Trout | 1,500 | 2" | Montana fish & wildlife agency |
| August 10, 2009 | Cutthroat Trout | 500 | 2" | Montana fish & wildlife agency |
| August 8, 2007 | Cutthroat Trout | 500 | 1.85" | Montana fish & wildlife agency |
| July 26, 2007 | Cutthroat Trout | 1,512 | 1.23" | Montana fish & wildlife agency |
| July 12, 2004 | Cutthroat Trout | 1,580 | 1.33" | Montana fish & wildlife agency |
| August 6, 2001 | Cutthroat Trout | 500 | 2" | Montana fish & wildlife agency |
| August 13, 1999 | Cutthroat Trout | 2,496 | 1.5" | Montana fish & wildlife agency |
| August 2, 1999 | Cutthroat Trout | 500 | 2.1" | Montana fish & wildlife agency |
| August 4, 1998 | Cutthroat Trout | 2,940 | 1.3" | Montana fish & wildlife agency |
| August 11, 1997 | Cutthroat Trout | 500 | 2.2" | Montana fish & wildlife agency |
| July 28, 1997 | Cutthroat Trout | 2,509 | 1.5" | Montana fish & wildlife agency |
| July 21, 1995 | Cutthroat Trout | 500 | 1.9" | Montana fish & wildlife agency |
| August 12, 1993 | Cutthroat Trout | 3,000 | 1.2" | Montana fish & wildlife agency |
| August 10, 1993 | Cutthroat Trout | 500 | 2.2" | Montana fish & wildlife agency |
| August 6, 1991 | Cutthroat Trout | 500 | 2" | Montana fish & wildlife agency |
| August 15, 1989 | Cutthroat Trout | 3,036 | 1.3" | Montana fish & wildlife agency |
| August 8, 1989 | Cutthroat Trout | 500 | 2" | Montana fish & wildlife agency |
| August 18, 1987 | Cutthroat Trout | 500 | 1.8" | Montana fish & wildlife agency |
| August 6, 1985 | Cutthroat Trout | 3,000 | 2" | Montana fish & wildlife agency |
| July 25, 1985 | Cutthroat Trout | 500 | 2" | Montana fish & wildlife agency |
| August 3, 1983 | Cutthroat Trout | 507 | 2" | Montana fish & wildlife agency |
| September 2, 1982 | Cutthroat Trout | 3,000 | 2" | Montana fish & wildlife agency |
| August 6, 1981 | Cutthroat Trout | 267 | 2" | Montana fish & wildlife agency |
| July 17, 1979 | Cutthroat Trout | 282 | 2" | Montana fish & wildlife agency |
| August 17, 1977 | Cutthroat Trout | 250 | 2" | Montana fish & wildlife agency |
| August 3, 1977 | Cutthroat Trout | 3,072 | 1" | Montana fish & wildlife agency |
| September 8, 1975 | Cutthroat Trout | 508 | 3" | Montana fish & wildlife agency |
| September 18, 1973 | Cutthroat Trout | 480 | 2" | Montana fish & wildlife agency |
| August 19, 1969 | Cutthroat Trout | 2,844 | 1" | Montana fish & wildlife agency |
| July 20, 1966 | Cutthroat Trout | 1,584 | 3" | Montana fish & wildlife agency |
| September 18, 1961 | Arctic Grayling | 684 | 2" | Montana fish & wildlife agency |
| August 17, 1951 | Cutthroat Trout | 3,000 | 1" | Montana fish & wildlife agency |
| August 12, 1939 | Rainbow Trout | 1,000 | 4" | Montana fish & wildlife agency |
| September 16, 1938 | Rainbow Trout | 9,360 | 2" | Montana fish & wildlife agency |
| August 18, 1934 | Cutthroat Trout | 40,000 | 0 | Montana fish & wildlife agency |
Frequently asked
When was Castle Lake last stocked?
According to Montana fish & wildlife agency, Castle Lake was last stocked September 17, 2025 with Cutthroat Trout.
What fish species are stocked in Castle Lake?
Castle Lake is stocked with Cutthroat Trout, Arctic Grayling, and Rainbow Trout.
What time of year is Castle Lake stocked?
Castle Lake is typically stocked in summer, most often in August.
How often is Castle Lake stocked?
Castle Lake is stocked intermittently — 47 recorded stockings between 1934 and 2025.
How many fish have been stocked in Castle Lake?
About 101,309 fish have been stocked in Castle Lake across 47 recorded events since 1934, per Montana fish & wildlife agency.
What size are the fish stocked in Castle Lake?
Fish stocked in Castle Lake average about 2.1 inches, based on the sizes the agency reported.