Sheridan County, MT
Flat Lake
LakeSheridan County, MT
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About this water
Flat Lake is a lake in Sheridan County, Montana. State records show it stocked 24 times between 2000 and 2025. Every recorded release has been rainbow trout. 27,151 rainbow trout have gone in across 24 releases.
Stocking history
24 recorded stockings
| Date | Species | Number | Size | Hatchery |
|---|---|---|---|---|
| Jun 5, 2025 | Rainbow Trout · Arlee X Erwin - Ennis | 1,000 | 7.0" | Fort Peck Hatchery |
| Jun 27, 2024 | Rainbow Trout · Arlee X Erwin - Ennis | 1,000 | 8.3" | Fort Peck Hatchery |
| Jul 14, 2023 | Rainbow Trout · Arlee X Erwin - Ennis | 1,055 | 6.7" | Fort Peck Hatchery |
| May 24, 2022 | Rainbow Trout · Arlee X Erwin - Ennis | 1,000 | 7.1" | Fort Peck Hatchery |
| May 19, 2021 | Rainbow Trout · Arlee X Erwin - Ennis | 1,000 | 6.8" | Fort Peck Hatchery |
| May 26, 2020 | Rainbow Trout · Arlee X Erwin - Ennis | 1,003 | 7.1" | Fort Peck Hatchery |
| Jun 7, 2019 | Rainbow Trout | 1,000 | 7.3" | Fort Peck Hatchery |
| Jun 13, 2018 | Rainbow Trout · Arlee X Erwin - Ennis | 542 | 7.2" | Fort Peck Hatchery |
| Oct 31, 2017 | Rainbow Trout · Arlee X Erwin - Ennis | 2,000 | 1.0" | Fort Peck Hatchery |
| Jun 1, 2017 | Rainbow Trout · Arlee X Erwin - Ennis | 1,006 | 6.9" | Fort Peck Hatchery |
| May 18, 2016 | Rainbow Trout · Arlee X Erwin - Ennis | 504 | 7.3" | Fort Peck Hatchery |
| May 18, 2016 | Rainbow Trout · Arlee X Erwin - Ennis | 503 | 7.3" | Fort Peck Hatchery |
Showing the 12 most recent of 24. Stocking records for Flat Lake 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.
