Montana stocking report
Upper Twin Lake
The short answer
Upper Twin Lake was last stocked on September 30, 2025: 4,000 Westslope Cutthroat Trout (2.23 in avg).
Location map
Upper Twin Lake location context
Pins use the finest location published with the stocking record. County-level pins show area context, not an exact access point; confirm access and directions with the official agency source.
Looking for a different Upper Twin Lake? Also on record: Upper Twin Lake (Idaho County, Idaho) · Upper Twin Lake (Kootenai County, Idaho)
Agency records
Full stocking history
| Date | Species | Fish | Size | Hatchery |
|---|---|---|---|---|
| September 30, 2025 | Westslope Cutthroat Trout | 4,000 | 2.23 in avg | Washoe Park Trout Hatchery |
| October 3, 2024 | Westslope Cutthroat Trout | 4,000 | 1.85 in avg | Washoe Park Trout Hatchery |
| September 28, 2023 | Westslope Cutthroat Trout | 3,600 | 2.06 in avg | Washoe Park Trout Hatchery |
| September 2, 2022 | Westslope Cutthroat Trout | 4,000 | 2.24 in avg | Washoe Park Trout Hatchery |
| September 1, 2021 | Westslope Cutthroat Trout | 4,000 | 2.35 in avg | Washoe Park Trout Hatchery |
| August 15, 2019 | Westslope Cutthroat Trout | 4,000 | 2.1 in avg | Washoe Park Trout Hatchery |
| August 29, 2018 | Westslope Cutthroat Trout | 3,600 | 2.43 in avg | Washoe Park Trout Hatchery |
| September 28, 2017 | Westslope Cutthroat Trout | 4,012 | 2.3000000000000003 in avg | Washoe Park Trout Hatchery |
| September 1, 2016 | Westslope Cutthroat Trout | 1,500 | 6.88 in avg | Washoe Park Trout Hatchery |
| August 12, 2015 | Westslope Cutthroat Trout | 4,000 | 1.7 in avg | Washoe Park Trout Hatchery |
| August 19, 1963 | Cutthroat Trout | 535 | 2 in avg | Washoe Park Trout Hatchery |
| September 7, 1961 | Cutthroat Trout | 5,040 | 2 in avg | Washoe Park Trout Hatchery |
| September 13, 1959 | Cutthroat Trout | 10,000 | 1 in avg | Washoe Park Trout Hatchery |
| August 17, 1934 | Cutthroat Trout | 36,000 | Washoe Park Trout Hatchery |
Records shown exactly as published by Montana Fish, Wildlife & Parks. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.
Data source: Montana Fish, Wildlife & Parks. Last updated: .
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