Fallon County, MT
South Sandstone Reservoir
Around here
Around South Sandstone Reservoir
Public land: USGS PAD-US
About this water
South Sandstone Reservoir is a reservoir in Fallon County, Montana. State records show it stocked 65 times between 2000 and 2026. The most-stocked species are walleye, northern pike and smallmouth bass, with 1 more on record. 2,619,254 walleye have gone in across 40 releases.
Boat access nearby
One mapped launch sits within 2 miles of South Sandstone Reservoir. Ramp data comes from the USGS national boat-ramp inventory.
Stocking history
65 recorded stockings
| Date | Species | Number | Size | Hatchery |
|---|---|---|---|---|
| Jun 25, 2026 | Yellow Perch · Wild | 100,000 | 1.5" | Miles City Fish Hatchery |
| Jun 15, 2026 | Northern Pike · Fort Peck | 1,500 | 3.0" | Fort Peck Hatchery |
| Jun 15, 2026 | Walleye · Fort Peck | 10,000 | 1.6" | Miles City Fish Hatchery |
| Jun 18, 2025 | Walleye · Fort Peck | 10,000 | 1.4" | Miles City Fish Hatchery |
| Jun 6, 2025 | Northern Pike · Fort Peck | 1,571 | 3.0" | Fort Peck Hatchery |
| May 6, 2025 | Northern Pike · Fort Peck | 252,000 | 1.0" | Fort Peck Hatchery |
| Jun 19, 2024 | Walleye · Fort Peck | 10,000 | 1.3" | Miles City Fish Hatchery |
| Jun 29, 2023 | Walleye · Fort Peck | 10,000 | 1.9" | Miles City Fish Hatchery |
| Jun 17, 2022 | Walleye · Fort Peck | 10,000 | 1.3" | Miles City Fish Hatchery |
| Jun 16, 2022 | Northern Pike · Fort Peck | 1,545 | 2.3" | Fort Peck Hatchery |
| May 3, 2022 | Northern Pike · Fort Peck | 300,000 | 0.5" | Fort Peck Hatchery |
| Jun 25, 2021 | Walleye · Fort Peck | 10,000 | 1.4" | Miles City Fish Hatchery |
Showing the 12 most recent of 65. Stocking records for South Sandstone 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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