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About this water
Lanning Reservoir is a reservoir in Montana. State records show it stocked 22 times between 2003 and 2025. Every recorded release has been rainbow trout. 22,250 rainbow trout have gone in across 22 releases.
Stocking history
22 recorded stockings
| Date | Species | Number | Size | Hatchery |
|---|---|---|---|---|
| Jun 16, 2025 | Rainbow Trout · Eagle Lake | 1,000 | 3.8" | Giant Springs Trout Hatchery |
| Jun 11, 2024 | Rainbow Trout · Eagle Lake | 1,000 | 3.7" | Giant Springs Trout Hatchery |
| Jun 21, 2023 | Rainbow Trout · Eagle Lake | 1,000 | 3.4" | Giant Springs Trout Hatchery |
| Jun 9, 2022 | Rainbow Trout · Eagle Lake | 1,000 | 3.2" | Giant Springs Trout Hatchery |
| Jun 3, 2021 | Rainbow Trout · Eagle Lake | 1,000 | 3.4" | Giant Springs Trout Hatchery |
| Jun 3, 2020 | Rainbow Trout · Eagle Lake | 1,000 | 3.4" | Giant Springs Trout Hatchery |
| Jun 5, 2019 | Rainbow Trout · Eagle Lake | 1,000 | 3.5" | Giant Springs Trout Hatchery |
| Jun 8, 2018 | Rainbow Trout · Eagle Lake | 1,000 | 3.1" | Giant Springs Trout Hatchery |
| Jun 20, 2017 | Rainbow Trout · Eagle Lake | 1,000 | 3.6" | Giant Springs Trout Hatchery |
| Jun 9, 2015 | Rainbow Trout · Eagle Lake | 1,000 | 3.6" | Giant Springs Trout Hatchery |
| Jun 12, 2014 | Rainbow Trout · Eagle Lake | 1,000 | 3.6" | Giant Springs Trout Hatchery |
| Jun 12, 2013 | Rainbow Trout · Arlee | 1,150 | 3.9" | Giant Springs Trout Hatchery |
Showing the 12 most recent of 22. Stocking records for Lanning 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.
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