Gasvoda Reservoir fishing

Fishing at Gasvoda Reservoir 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

Plants on record

20

Since 2014

Species recorded

2

Average size

4.6 in

Elevation

3,019.4 ft

Access and facts

Nearest town
Big Sandy

Small (about 5.5-acre) private-land reservoir 25 miles south of Big Sandy.

Sources: shore_notes , nearest_town , fishing_notes

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How Gasvoda Reservoir is stocked

The first plant of the year usually falls in the second week of June. In 2026 it was June 15, 2026, about when it usually is.

Fish at Gasvoda Reservoir

Fishing Gasvoda Reservoir is most likely to be for Rainbow Trout. Rainbow Trout accounts for 14 of 20 plants on record, ahead of Largemouth Bass.

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 14 plants
Plants
14 of 20
Last stocked
June 15, 2026
Average length
5.7 in

Seasons and rigs are on the Rainbow Trout guide.

Largemouth Bass 6 plants
Plants
6 of 20
Last stocked
August 12, 2025
Average length
2 in

Seasons and rigs are on the Largemouth Bass guide.

Fishing Gasvoda Reservoir

Gasvoda Reservoir presents fishing opportunities for anglers interested in diverse catches. 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.

Sources: myfwp.mt.gov

Fish stocked per year

  • 1,5002014
  • 2,3002015
  • 2502016
  • 2,0002017
  • 1,5002018
  • 2,0002019
  • 1,5002020
  • 2,0002021
  • 1,5002022
  • 2,0002023
  • 1,5002024
  • 2,0002025
  • 1,5002026

Stocking history

Showing 15 of 20 plants Showing 20 plants

Source: Montana Fish, Wildlife & Parks.
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
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Species stocked here

Depth-by-season, top lures, and bait notes for each species stocked here are on its own species guide, linked above.

Nearest lakes