MT
Cooney Reservoir
LakeMT
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About this water
Cooney Reservoir is a reservoir in Montana. State records show it stocked 226 times between 2000 and 2026. The most-stocked species are rainbow trout, walleye and yellowstone cutthroat trout. 3,375,981 rainbow trout have gone in across 215 releases.
Stocking history
226 recorded stockings
| Date | Species | Number | Size | Hatchery |
|---|---|---|---|---|
| May 21, 2026 | Rainbow Trout · Arlee X Erwin - Ennis | 5,181 | 9.0" | Bluewater Springs Trout Hatchery |
| May 20, 2026 | Rainbow Trout · Arlee X Erwin - Ennis | 7,850 | 9.0" | Bluewater Springs Trout Hatchery |
| Mar 9, 2026 | Rainbow Trout · Arlee | 9,959 | 2.4" | Bluewater Springs Trout Hatchery |
| Oct 16, 2025 | Rainbow Trout · Arlee | 5,525 | 9.7" | Bluewater Springs Trout Hatchery |
| Oct 14, 2025 | Rainbow Trout · Arlee | 4,410 | 11.6" | Bluewater Springs Trout Hatchery |
| Oct 14, 2025 | Rainbow Trout · Arlee | 4,410 | 11.6" | Bluewater Springs Trout Hatchery |
| Oct 14, 2025 | Rainbow Trout · Arlee | 4,410 | 11.6" | Bluewater Springs Trout Hatchery |
| Oct 14, 2025 | Rainbow Trout · Arlee | 4,410 | 11.6" | Bluewater Springs Trout Hatchery |
| Oct 13, 2025 | Rainbow Trout · Arlee | 3,400 | 12.0" | Bluewater Springs Trout Hatchery |
| May 20, 2025 | Rainbow Trout · Arlee X Erwin - Ennis | 8,001 | 9.6" | Bluewater Springs Trout Hatchery |
| May 20, 2025 | Rainbow Trout · Arlee X Erwin - Ennis | 8,598 | 9.8" | Bluewater Springs Trout Hatchery |
| May 20, 2025 | Rainbow Trout · Arlee X Erwin - Ennis | 7,438 | 9.6" | Bluewater Springs Trout Hatchery |
Showing the 12 most recent of 226. Stocking records for Cooney Reservoir published by Montana Fish, Wildlife & Parks. Stocking does not guarantee fish are present. Check current regulations and access before you go. See the full Montana stocking report.
