Island Lake Fish Stocking
Montana · 1934–2024 on record
According to Montana fish & wildlife agency, Island Lake was last stocked September 30, 2024 with Golden Trout. Island Lake has 37 stocking records on file, spanning 1934–2024, with about 592,285 fish stocked over that period.
When Island Lake is stocked
Island Lake is typically stocked in summer, most often in July — 12 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Island Lake, freshest activity first.
Crater Lake
6 mi3 species · 42 records
Last stocked August 2025
George Lake
10 mi1 species · 41 records
Last stocked August 2025
Gravelly Range Lake
10 mi10 species · 25 records
Last stocked April 1957
Landers Fork
8 mi2 species · 28 records
Last stocked July 1954
Keep Cool Creek
10 mi2 species · 47 records
Last stocked July 1954
Meadow Creek
8 mi3 species · 76 records
Last stocked August 1952
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| September 30, 2024 | Golden Trout | 500 | 1.53" | Montana fish & wildlife agency |
| August 1, 2023 | Cutthroat Trout | 500 | 2.54" | Montana fish & wildlife agency |
| July 21, 2020 | Cutthroat Trout | 500 | 2.83" | Montana fish & wildlife agency |
| September 12, 2017 | Golden Trout | 1,000 | 1.09" | Montana fish & wildlife agency |
| July 24, 2017 | Cutthroat Trout | 500 | 2.3" | Montana fish & wildlife agency |
| July 25, 2012 | Largemouth Bass | 22,500 | 1.2" | Montana fish & wildlife agency |
| September 12, 2011 | Golden Trout | 500 | 0.93" | Montana fish & wildlife agency |
| July 27, 2011 | Largemouth Bass | 22,500 | 1.6" | Montana fish & wildlife agency |
Show 29 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| July 20, 2011 | Cutthroat Trout | 1,000 | 2.9" | Montana fish & wildlife agency |
| August 13, 2010 | Cutthroat Trout | 1,302 | 2.4" | Montana fish & wildlife agency |
| July 20, 2010 | Largemouth Bass | 22,500 | 1.2" | Montana fish & wildlife agency |
| September 16, 2009 | Cutthroat Trout | 100 | 14" | Montana fish & wildlife agency |
| July 11, 2009 | Cutthroat Trout | 1,000 | 2" | Montana fish & wildlife agency |
| July 29, 2008 | Largemouth Bass | 22,500 | 1.1" | Montana fish & wildlife agency |
| July 24, 2007 | Largemouth Bass | 14,600 | 1.6" | Montana fish & wildlife agency |
| July 25, 2006 | Golden Trout | 900 | 5.5" | Montana fish & wildlife agency |
| July 18, 2006 | Largemouth Bass | 14,000 | 1.7" | Montana fish & wildlife agency |
| August 17, 2004 | Largemouth Bass | 22,500 | 1.3" | Montana fish & wildlife agency |
| August 1, 1991 | Largemouth Bass | 15,000 | 1.2" | Montana fish & wildlife agency |
| August 4, 1970 | Arctic Grayling | 20,000 | 1" | Montana fish & wildlife agency |
| October 28, 1966 | Rainbow Trout | 15,130 | 4" | Montana fish & wildlife agency |
| October 27, 1966 | Rainbow Trout | 14,960 | 4" | Montana fish & wildlife agency |
| September 8, 1964 | Brook Trout | 29,440 | 4" | Montana fish & wildlife agency |
| June 30, 1964 | Brook Trout | 51,100 | 3" | Montana fish & wildlife agency |
| September 4, 1963 | Golden Trout | 4,420 | 1" | Montana fish & wildlife agency |
| July 28, 1954 | Cutthroat Trout | 15,180 | 0 | Montana fish & wildlife agency |
| June 7, 1953 | Arctic Grayling | 100,000 | 0 | Montana fish & wildlife agency |
| June 7, 1951 | Arctic Grayling | 50,000 | 0 | Montana fish & wildlife agency |
| June 30, 1950 | Rainbow Trout | 4,100 | 99" | Montana fish & wildlife agency |
| June 14, 1949 | Rainbow Trout | 17,850 | 0 | Montana fish & wildlife agency |
| June 14, 1949 | Rainbow Trout | 24,990 | 0 | Montana fish & wildlife agency |
| June 9, 1948 | Rainbow Trout | 25,440 | 99" | Montana fish & wildlife agency |
| June 9, 1947 | Rainbow Trout | 25,440 | 99" | Montana fish & wildlife agency |
| September 11, 1946 | Rainbow Trout | 2,333 | 2" | Montana fish & wildlife agency |
| September 6, 1941 | Rainbow Trout | 15,000 | 2" | Montana fish & wildlife agency |
| June 13, 1941 | Cutthroat Trout | 5,000 | 4" | Montana fish & wildlife agency |
| September 7, 1934 | Rainbow Trout | 8,000 | 3" | Montana fish & wildlife agency |
Frequently asked
When was Island Lake last stocked?
According to Montana fish & wildlife agency, Island Lake was last stocked September 30, 2024 with Golden Trout.
What fish species are stocked in Island Lake?
Island Lake is stocked with Golden Trout, Cutthroat Trout, Largemouth Bass, Arctic Grayling, Rainbow Trout, and Brook Trout.
What time of year is Island Lake stocked?
Island Lake is typically stocked in summer, most often in July.
How often is Island Lake stocked?
Island Lake is stocked intermittently — 37 recorded stockings between 1934 and 2024.
How many fish have been stocked in Island Lake?
About 592,285 fish have been stocked in Island Lake across 37 recorded events since 1934, per Montana fish & wildlife agency.
What size are the fish stocked in Island Lake?
Fish stocked in Island Lake average about 11.7 inches, based on the sizes the agency reported.