Walleye Stocked · 18 plants · last June 15, 2026 Best: dawn, dusk, night South Sandstone Reservoir fishing
South Sandstone Reservoir fishing is stocked with Walleye, Northern Pike, and Yellow Perch on a reservoir. Also recorded: Black Crappie, Largemouth Bass, Black Bullhead, Smallmouth Bass, Pumpkinseed, White Crappie, and 1 more. It is stocked about 2.1 times a year since 2011, most often in May and June. Species guides list dawn, dusk, and night for Walleye, Black Crappie, and White Crappie, dawn, day, and dusk for Northern Pike and Yellow Perch, and dawn and dusk for Largemouth Bass and Smallmouth Bass.
- Last stocked
- June 25, 2026
- · Yellow Perch
- Plants on record
- 33
- Since 2011
- Species stocked
- 3 (+7 also recorded)
- Average size
- 1.7 in
- Elevation
- 2,861.5 ft
Fish at South Sandstone Reservoir
Around the dates South Sandstone Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 66.9°F in June, 55.1°F in May, 42.4°F in April, 62.8°F in September. That is air temperature at these coordinates, not water temperature. Open-Meteo
Walleye Stocked · 18 plants · last June 15, 2026 Best: dawn, dusk, night 
Northern Pike Stocked · 14 plants · last June 15, 2026 Best: dawn, day, dusk Last stocked June 15, 2026 · avg 1.9 in · 14 plants
Best: dawn, day, dusk
Northern Pike species guide
Yellow Perch Stocked · 1 plant · last June 25, 2026 Best: dawn, day, dusk 
Black Crappie Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
Black Crappie species guide
Largemouth Bass Confirmed present Best: dawn, dusk Best: dawn, dusk
Largemouth Bass species guide Black Bullhead Confirmed present
Smallmouth Bass Confirmed present Best: dawn, dusk Best: dawn, dusk
Smallmouth Bass species guide
Pumpkinseed Confirmed present Best: dusk Best: dusk
Pumpkinseed species guide White Crappie Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
White Crappie species guide Green Sunfish Confirmed present
How South Sandstone Reservoir is stocked
Fish stocked in 2011
205,000
Fish stocked in 2012
311,880
Fish stocked in 2013
10,000
Fish stocked in 2014
319,901
Fish stocked in 2015
10,000
Fish stocked in 2016
311,500
Fish stocked in 2017
10,280
Fish stocked in 2018
311,520
Fish stocked in 2019
10,000
Fish stocked in 2020
11,507
Fish stocked in 2021
10,000
Fish stocked in 2022
311,545
Fish stocked in 2023
10,000
Fish stocked in 2024
10,000
Fish stocked in 2025
263,571
Fish stocked in 2026
111,500
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| June 25, 2026 | Yellow Perch | 100,000 | 1.51 in | report |
| June 15, 2026 | Walleye | 10,000 | 1.55 in | report |
| June 15, 2026 | Northern Pike | 1,500 | 2.98 in | report |
| June 18, 2025 | Walleye | 10,000 | 1.36 in | report |
| June 6, 2025 | Northern Pike | 1,571 | 3.01 in | report |
| May 6, 2025 | Northern Pike | 252,000 | 1.02 in | report |
| June 19, 2024 | Walleye | 10,000 | 1.34 in | report |
| June 29, 2023 | Walleye | 10,000 | 1.89 in | report |
| June 17, 2022 | Walleye | 10,000 | 1.25 in | report |
| June 16, 2022 | Northern Pike | 1,545 | 2.3 in | report |
| May 3, 2022 | Northern Pike | 300,000 | 0.5 in | report |
| June 25, 2021 | Walleye | 10,000 | 1.44 in | report |
| June 9, 2020 | Walleye | 10,000 | 2.18 in | report |
| June 9, 2020 | Northern Pike | 1,507 | 3.43 in | report |
| June 25, 2019 | Walleye | 10,000 | 1.68 in | report |
| June 20, 2018 | Walleye | 10,000 | 1.74 in | report |
| June 19, 2018 | Northern Pike | 1,520 | 3.56 in | report |
| May 22, 2018 | Northern Pike | 300,000 | 0.75 in | report |
| June 15, 2017 | Walleye | 10,280 | 1.48 in | report |
| June 14, 2016 | Walleye | 10,000 | 1.46 in | report |
| May 26, 2016 | Northern Pike | 1,500 | 2.04 in | report |
| April 29, 2016 | Northern Pike | 300,000 | 0.37 in | report |
| June 15, 2015 | Walleye | 10,000 | 1.47 in | report |
| September 4, 2014 | Walleye | 8,400 | 5 in | report |
| June 18, 2014 | Walleye | 10,000 | 1.3 in | report |
| June 5, 2014 | Northern Pike | 1,501 | 2.59 in | report |
| May 15, 2014 | Northern Pike | 300,000 | 0.75 in | report |
| June 24, 2013 | Walleye | 10,000 | 1.5 in | report |
| June 13, 2012 | Walleye | 10,380 | 1.4 in | report |
| May 31, 2012 | Northern Pike | 1,500 | 2.64 in | report |
| April 28, 2012 | Northern Pike | 300,000 | 0.37 in | report |
| June 23, 2011 | Walleye | 5,000 | 1.2 in | report |
| May 13, 2011 | Walleye | 200,000 | 0.25 in | report |
Access and facts
- Water type
- reservoir
- Nearest town
- Plevna
- Boat ramp
- Yes
- ADA accessible
- Yes
- Facilities
- camping, restrooms
FWP fishing access site 5 miles south of Plevna on a county road, then 1.5 miles east. Concrete boat ramp, primitive campsites, toilets, and an ADA-accessible fishing pier on the west shoreline of this state-owned reservoir.
Drafted by AI from the cited sources and checked before publishing.
Advisories, closures, regulations and water conditions change. Check the Montana Fish, Wildlife & Parks before you go.
Nearest lakes
Common questions
What fish are at South Sandstone Reservoir?
Fishing South Sandstone Reservoir usually means Walleye: Walleye accounts for 18 of 33 plants on record, ahead of Northern Pike and one more. Walleye was last stocked June 15, 2026, averaging 1.6 in. Northern Pike was last stocked June 15, 2026, averaging 1.9 in. Yellow Perch was last stocked June 25, 2026, averaging 1.5 in. Black Crappie, Largemouth Bass, Black Bullhead, and Smallmouth Bass, plus 3 more are recorded here outside the stocking reports.
When is South Sandstone Reservoir stocked?
Last stocked June 25, 2026. It is stocked about 2.1 times a year since 2011, most often in May and June.
How big are the fish stocked at South Sandstone Reservoir?
Stocked fish average 1.7 in. Walleye average 1.6 in. Northern Pike average 1.9 in. Yellow Perch average 1.5 in.
How do you get on South Sandstone Reservoir?
There is a boat ramp and it is ADA accessible. The nearest town is Plevna. Facilities include camping and restrooms. FWP fishing access site 5 miles south of Plevna on a county road, then 1.5 miles east. Concrete boat ramp, primitive campsites, toilets, and an ADA-accessible fishing pier on the west shoreline of this state-owned reservoir.