Rainbow Trout Stocked · 14 plants · last June 15, 2026 Best: dawn, dusk Gasvoda Reservoir fishing
Gasvoda Reservoir fishing has Rainbow Trout and Largemouth Bass on the stocking report. It is stocked about 1.5 times a year since 2014, most often in June and July. Species guides list dawn and dusk as the active times.
- Last stocked
- June 15, 2026
- · Rainbow Trout
- Plants on record
- 20
- Since 2014
- Species recorded
- 2
- Average size
- 4.6 in
- Elevation
- 3,019.4 ft
Fish at Gasvoda Reservoir
Around the dates Gasvoda Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 64.2°F in June, 72.9°F in July, 54.8°F in May, 70.6°F in August. That is air temperature at these coordinates, not water temperature. Open-Meteo
Rainbow Trout Stocked · 14 plants · last June 15, 2026 Best: dawn, dusk 
Largemouth Bass Stocked · 6 plants · last August 12, 2025 Best: dawn, dusk The fishery's status indicates that Largemouth Bass are stocked biennially. Moreover, Rainbow Trout are stocked annually in Gasvoda Reservoir, ensuring a consistent presence of these fish for those looking to fish this body of water. (myfwp.mt.gov, accessed September 22, 2026)
Drafted by AI from the cited sources and checked before publishing.
How Gasvoda Reservoir is stocked
Iliad Reservoir (12.7 mi) and Crow Coulee Reservoir (16.8 mi) were stocked more recently. Iliad Reservoir is also stocked with Rainbow Trout and Largemouth Bass and Crow Coulee Reservoir is also stocked with Rainbow Trout and Largemouth Bass.
Fish stocked in 2014
1,500
Fish stocked in 2015
2,300
Fish stocked in 2016
250
Fish stocked in 2017
2,000
Fish stocked in 2018
1,500
Fish stocked in 2019
2,000
Fish stocked in 2020
1,500
Fish stocked in 2021
2,000
Fish stocked in 2022
1,500
Fish stocked in 2023
2,000
Fish stocked in 2024
1,500
Fish stocked in 2025
2,000
Fish stocked in 2026
1,500
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| June 15, 2026 | Rainbow Trout | 1,500 | 5.78 in | report |
| August 12, 2025 | Largemouth Bass | 500 | 1.86 in | report |
| June 27, 2025 | Rainbow Trout | 1,500 | 6.02 in | report |
| June 11, 2024 | Rainbow Trout | 1,500 | 5.8 in | report |
| July 27, 2023 | Largemouth Bass | 500 | 1.8 in | report |
| June 21, 2023 | Rainbow Trout | 1,500 | 5.66 in | report |
| June 9, 2022 | Rainbow Trout | 1,500 | 5.66 in | report |
| July 22, 2021 | Largemouth Bass | 500 | 1.92 in | report |
| June 3, 2021 | Rainbow Trout | 1,500 | 4.99 in | report |
| June 3, 2020 | Rainbow Trout | 1,500 | 3.52 in | report |
| July 27, 2019 | Largemouth Bass | 500 | 1.55 in | report |
| June 5, 2019 | Rainbow Trout | 1,500 | 5.2 in | report |
| June 8, 2018 | Rainbow Trout | 1,500 | 5.3 in | report |
| August 2, 2017 | Largemouth Bass | 500 | 3.03 in | report |
| June 6, 2017 | Rainbow Trout | 1,500 | 6.05 in | report |
| October 18, 2016 | Rainbow Trout | 250 | 8.56 in | report |
| July 22, 2015 | Largemouth Bass | 800 | 2.07 in | report |
| June 9, 2015 | Rainbow Trout | 1,500 | 5.37 in | report |
| May 14, 2014 | Rainbow Trout | 1,000 | 7.06 in | report |
| May 14, 2014 | Rainbow Trout | 500 | 4.38 in | report |
Access and facts
- Nearest town
- Big Sandy
Small (about 5.5-acre) private-land reservoir 25 miles south of Big Sandy.
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 Gasvoda Reservoir?
Fishing Gasvoda Reservoir usually means Rainbow Trout: Rainbow Trout accounts for 14 of 20 plants on record, ahead of Largemouth Bass. Rainbow Trout was last stocked June 15, 2026, averaging 5.7 in. Largemouth Bass was last stocked August 12, 2025, averaging 2 in.
When is Gasvoda Reservoir stocked?
Last stocked June 15, 2026. It is stocked about 1.5 times a year since 2014, most often in June and July.
How big are the fish stocked at Gasvoda Reservoir?
Stocked fish average 4.6 in. Rainbow Trout average 5.7 in. Largemouth Bass average 2 in.
How do you get on Gasvoda Reservoir?
The nearest town is Big Sandy. Small (about 5.5-acre) private-land reservoir 25 miles south of Big Sandy.
Which lakes near Gasvoda Reservoir were stocked more recently?
Iliad Reservoir (12.7 mi) and Crow Coulee Reservoir (16.8 mi) were stocked more recently. Iliad Reservoir is also stocked with Rainbow Trout and Largemouth Bass and Crow Coulee Reservoir is also stocked with Rainbow Trout and Largemouth Bass.