Stocking Report
Rainbow Trout stocking in Montana
15,826 recorded stockings, 581 waters, averaging 7.82" at release, from Montana Fish, Wildlife & Parks records. Every water links to its own page.
Latest recorded stocking: Sep 23, 2026
When rainbow trout goes in
66% of recorded stockings happen from April through June.
- 1%Jan
- 1%Feb
- 3%Mar
- 18%Apr
- 24%May
- 24%Jun
- 8%Jul
- 3%Aug
- 11%Sep
- 6%Oct
- 1%Nov
- 1%Dec
Share of all recorded rainbow 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 rainbow trout gets stocked in Montana
| Water | County | Stockings | Fish | Last recorded |
|---|---|---|---|---|
| Canyon Ferry Lake | Broadwater | 777 | 8,933,678 | Jul 1, 2026 |
| Holter Reservoir | Not reported | 646 | 6,944,470 | Jun 25, 2026 |
| Hauser Reservoir | Not reported | 407 | 3,905,414 | Jun 25, 2026 |
| Harpers Lake | Missoula | 303 | 69,082 | Jun 30, 2026 |
| Lake Koocanusa | Lincoln | 232 | 1,222,908 | Jun 12, 2024 |
| Rainbow Dam Reservoir | Not reported | 221 | 399,247 | Aug 26, 2026 |
| Beavertail Pond | Not reported | 221 | 39,764 | May 14, 2026 |
| Cooney Reservoir | Not reported | 215 | 3,375,981 | May 21, 2026 |
| Giant Springs Fishing Pond | Not reported | 203 | 25,808 | Aug 25, 2026 |
| Georgetown Lake | Granite | 196 | 4,995,599 | Sep 8, 2026 |
| Lake Como | Ravalli | 193 | 298,103 | Sep 8, 2026 |
| Triangle Pond | Not reported | 180 | 88,223 | Sep 11, 2026 |
| Clark Canyon Reservoir | Beaverhead | 176 | 6,317,004 | Jul 30, 2026 |
| Troy Kids Pond | Not reported | 155 | 61,760 | Jun 23, 2026 |
| Beaver Creek Reservoir | Not reported | 148 | 1,532,186 | Jun 18, 2026 |
| Missoula Kids Pond | Not reported | 140 | 18,462 | Jun 9, 2026 |
| Browns Lake | Powell | 128 | 1,473,301 | Sep 16, 2026 |
| Ninepipes Pond (Allentown) | Not reported | 125 | 39,901 | May 1, 2026 |
| Frenchtown Pond | Missoula | 124 | 48,942 | Sep 22, 2026 |
| Willow Creek Reservoir | Not reported | 122 | 2,843,218 | Jun 1, 2026 |
| Tetrault Lake | Lincoln | 119 | 317,518 | May 6, 2026 |
| Pine Grove Pond | Not reported | 118 | 49,004 | Jul 1, 2026 |
| Snappys Pond | Not reported | 118 | 30,642 | Jun 11, 2026 |
| Wild Bill Lake | Carbon | 112 | 152,529 | Aug 24, 2026 |
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.
