Stocking Report
Westslope Cutthroat Trout stocking in Montana
4,285 recorded stockings, 457 waters, averaging 4.57" at release, from Montana Fish, Wildlife & Parks records. Every water links to its own page.
Latest recorded stocking: Sep 29, 2026
When westslope cutthroat trout goes in
60% of recorded stockings happen from May through July.
- 0%Jan
- Feb
- 0%Mar
- 6%Apr
- 13%May
- 20%Jun
- 27%Jul
- 23%Aug
- 7%Sep
- 2%Oct
- 0%Nov
- 0%Dec
Share of all recorded westslope cutthroat trout stockings in Montana, by calendar month. Stocking does not guarantee fish are present. Check current regulations and access before you go.
States run two very different stocking calendars. We looked at all 114,145 records to work out why.
Where westslope cutthroat trout gets stocked in Montana
| Water | County | Stockings | Fish | Last recorded |
|---|---|---|---|---|
| Harpers Lake | Missoula | 21 | 8,300 | Jun 12, 2026 |
| Rainy Lake | Missoula | 21 | 23,329 | Jun 10, 2026 |
| Tunnel Lake | Not reported | 21 | 37,780 | May 21, 2026 |
| Lake Como | Ravalli | 21 | 98,948 | Apr 21, 2026 |
| Missoula Kids Pond | Not reported | 21 | 9,628 | Jun 18, 2025 |
| Nevada Reservoir | Not reported | 21 | 102,028 | May 23, 2022 |
| Piedmont Pond | Not reported | 21 | 8,377 | Oct 3, 2013 |
| Rainbow Lake | Not reported | 20 | 21,843 | Sep 30, 2025 |
| Big Therriault Lake | Lincoln | 20 | 67,767 | Aug 17, 2024 |
| Hawkins Lake | Not reported | 20 | 27,037 | Aug 9, 2024 |
| Rainbow Lake | Not reported | 20 | 21,954 | Aug 9, 2024 |
| Seeley Lake | Missoula | 20 | 241,384 | May 30, 2013 |
| AMC Settling Pond #3 | Not reported | 19 | 104,574 | Apr 14, 2026 |
| Big Bear Lake | Gallatin | 19 | 19,801 | Oct 16, 2024 |
| Grouse Lake | Not reported | 19 | 20,777 | Aug 26, 2024 |
| Libby Pond | Not reported | 18 | 6,552 | Jun 18, 2026 |
| Little Therriault Lake | Lincoln | 18 | 24,494 | Aug 17, 2024 |
| Sunburst Lake | Flathead | 18 | 170,031 | Aug 12, 2024 |
| North Fish Lake | Not reported | 18 | 21,409 | Aug 9, 2024 |
| Bailey Lake | Not reported | 18 | 30,975 | Jul 27, 2023 |
| Park Lake | Not reported | 18 | 61,569 | Jul 28, 2021 |
| Whitefish Lake | Flathead | 18 | 272,498 | Apr 21, 2021 |
| Bootjack Lake | Not reported | 18 | 16,639 | Jul 10, 2019 |
| Castle Lake | Not reported | 17 | 12,990 | Sep 17, 2025 |
See everything Montana stocks in the full Montana stocking report, or browse every mapped water in the Montana fishing spot finder.
Source: Montana Fish, Wildlife & Parks, from its fish stocking locations dataset.
