Triangle Lake Fish Stocking
Montana · 1969–2025 on record
According to Montana fish & wildlife agency, Triangle Lake was last stocked August 5, 2025 with Cutthroat Trout. Triangle Lake has 22 stocking records on file, spanning 1969–2025, with about 17,277 fish stocked over that period.
When Triangle Lake is stocked
Triangle Lake is typically stocked in summer, most often in August — 14 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Triangle Lake, freshest activity first.
Golden Lake
3 mi1 species · 7 records
Last stocked August 2025
Silt Lake, Upper
3 mi1 species · 5 records
Last stocked July 2024
Throop Lake
3 mi3 species · 6 records
Last stocked September 2022
Mountain Goat Lake
4 mi1 species · 13 records
Last stocked July 2022
Varve Lake
2 mi1 species · 6 records
Last stocked July 2018
Marker Lake
4 mi1 species · 8 records
Last stocked July 2018
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 5, 2025 | Cutthroat Trout | 790 | 2.34" | Montana fish & wildlife agency |
| July 29, 2019 | Cutthroat Trout | 470 | 2.72" | Montana fish & wildlife agency |
| July 30, 2018 | Cutthroat Trout | 630 | 2.34" | Montana fish & wildlife agency |
| July 24, 2017 | Cutthroat Trout | 790 | 2.3" | Montana fish & wildlife agency |
| August 2, 2011 | Cutthroat Trout | 630 | 2.2" | Montana fish & wildlife agency |
| July 20, 2010 | Cutthroat Trout | 630 | 2.15" | Montana fish & wildlife agency |
| July 28, 2009 | Cutthroat Trout | 790 | 2" | Montana fish & wildlife agency |
| July 28, 2009 | Cutthroat Trout | 790 | 2" | Montana fish & wildlife agency |
Show 14 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 6, 2003 | Cutthroat Trout | 630 | 2.15" | Montana fish & wildlife agency |
| August 13, 2002 | Cutthroat Trout | 630 | 2.5" | Montana fish & wildlife agency |
| August 7, 2001 | Cutthroat Trout | 790 | 2" | Montana fish & wildlife agency |
| August 4, 1995 | Cutthroat Trout | 630 | 2" | Montana fish & wildlife agency |
| August 8, 1994 | Cutthroat Trout | 630 | 2.4" | Montana fish & wildlife agency |
| August 9, 1993 | Cutthroat Trout | 800 | 2.2" | Montana fish & wildlife agency |
| August 13, 1987 | Cutthroat Trout | 1,000 | 1.9" | Montana fish & wildlife agency |
| July 22, 1985 | Cutthroat Trout | 817 | 2" | Montana fish & wildlife agency |
| July 22, 1985 | Cutthroat Trout | 654 | 2" | Montana fish & wildlife agency |
| August 17, 1979 | Cutthroat Trout | 1,026 | 2" | Montana fish & wildlife agency |
| August 17, 1977 | Cutthroat Trout | 790 | 2" | Montana fish & wildlife agency |
| August 17, 1977 | Cutthroat Trout | 630 | 2" | Montana fish & wildlife agency |
| August 5, 1971 | Cutthroat Trout | 660 | 3" | Montana fish & wildlife agency |
| August 1, 1969 | Cutthroat Trout | 2,070 | 3" | Montana fish & wildlife agency |
Frequently asked
When was Triangle Lake last stocked?
According to Montana fish & wildlife agency, Triangle Lake was last stocked August 5, 2025 with Cutthroat Trout.
What fish species are stocked in Triangle Lake?
Triangle Lake is stocked with Cutthroat Trout.
What time of year is Triangle Lake stocked?
Triangle Lake is typically stocked in summer, most often in August.
How often is Triangle Lake stocked?
Triangle Lake is stocked intermittently — 22 recorded stockings between 1969 and 2025.
How many fish have been stocked in Triangle Lake?
About 17,277 fish have been stocked in Triangle Lake across 22 recorded events since 1969, per Montana fish & wildlife agency.
What size are the fish stocked in Triangle Lake?
Fish stocked in Triangle Lake average about 2.2 inches, based on the sizes the agency reported.