Rainbow Trout Stocked · 24 plants · last June 22, 2026 Best: dawn, dusk Ruby River Reservoir fishing
Ruby River Reservoir fishing is stocked with Rainbow Trout on a reservoir. Also recorded: Brown Trout, Brook Trout, Mountain Whitefish, Arctic Grayling, Westslope Cutthroat Trout, White Sucker, and 1 more. It is stocked about 1.5 times a year since 2011, most often in June and July. Species guides list dawn and dusk for Rainbow Trout and dawn, day, and dusk for Brown Trout and Brook Trout.
- Last stocked
- June 22, 2026
- · Rainbow Trout
- Plants on record
- 24
- Since 2011
- Species stocked
- 1 (+7 also recorded)
- Average size
- 4 in
- Elevation
- 5,396.5 ft
Fish at Ruby River Reservoir
Around the dates Ruby River Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 68.3°F in July, 58.9°F in June, 48.1°F in May. That is air temperature at these coordinates, not water temperature. Open-Meteo
Rainbow Trout Stocked · 24 plants · last June 22, 2026 Best: dawn, dusk 
Brown Trout Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Brown Trout species guide
Brook Trout Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Brook Trout species guide Mountain Whitefish Confirmed present
Arctic Grayling Confirmed present 
Westslope Cutthroat Trout Confirmed present White Sucker Confirmed present
Longnose Sucker Confirmed present
How Ruby River Reservoir is stocked
No plants recorded in 2024.
Fish stocked in 2011
65,046
Fish stocked in 2012
49,975
Fish stocked in 2013
67,711
Fish stocked in 2014
71,030
Fish stocked in 2015
72,459
Fish stocked in 2016
65,461
Fish stocked in 2017
43,015
Fish stocked in 2018
62,519
Fish stocked in 2019
58,001
Fish stocked in 2020
67,686
Fish stocked in 2021
50,039
Fish stocked in 2022
85,007
Fish stocked in 2023
75,276
Fish stocked in 2025
48,696
Fish stocked in 2026
52,428
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| June 22, 2026 | Rainbow Trout | 52,428 | 3.8 in | report |
| June 24, 2025 | Rainbow Trout | 48,696 | 4.9 in | report |
| June 28, 2023 | Rainbow Trout | 75,276 | 3.91 in | report |
| May 18, 2022 | Rainbow Trout | 85,007 | 2.03 in | report |
| July 1, 2021 | Rainbow Trout | 50,039 | 4.2 in | report |
| July 1, 2020 | Rainbow Trout | 33,074 | 4.43 in | report |
| June 30, 2020 | Rainbow Trout | 34,612 | 4.46 in | report |
| July 22, 2019 | Rainbow Trout | 58,001 | 4.06 in | report |
| July 30, 2018 | Rainbow Trout | 23,861 | 4.14 in | report |
| July 23, 2018 | Rainbow Trout | 38,658 | 3.63 in | report |
| July 24, 2017 | Rainbow Trout | 32,201 | 3.98 in | report |
| June 19, 2017 | Rainbow Trout | 10,814 | 3.27 in | report |
| July 20, 2016 | Rainbow Trout | 36,741 | 3.48 in | report |
| July 20, 2016 | Rainbow Trout | 28,720 | 3.35 in | report |
| July 22, 2015 | Rainbow Trout | 37,167 | 4.1 in | report |
| July 20, 2015 | Rainbow Trout | 35,292 | 4.43 in | report |
| July 9, 2014 | Rainbow Trout | 38,441 | 4.18 in | report |
| July 7, 2014 | Rainbow Trout | 32,589 | 4.29 in | report |
| July 8, 2013 | Rainbow Trout | 51,350 | 4.18 in | report |
| July 8, 2013 | Rainbow Trout | 16,361 | 4.27 in | report |
| July 17, 2012 | Rainbow Trout | 30,360 | 4.03 in | report |
| July 16, 2012 | Rainbow Trout | 19,615 | 4.38 in | report |
| July 5, 2011 | Rainbow Trout | 36,182 | 4.08 in | report |
| July 5, 2011 | Rainbow Trout | 28,864 | 4.11 in | report |
Access and facts
- Water type
- reservoir
- Nearest town
- Alder
- Shore access
- Yes
- Fee required
- No
- Facilities
- camping
From Montana Highway 287, turn south at Alder onto Road 357 and continue about 10 miles to this BLM recreation site on the west side of the road. Fishing, boating, and camping access; no fee. Water levels fluctuate a lot since it is an irrigation 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.
About Ruby River Reservoir
Anglers should be aware that Ruby Reservoir is subject to large fluctuations in water levels. This condition exists because the reservoir was developed to supply irrigation water for agriculture. (blm.gov, accessed September 22, 2026)
Drafted by AI from the cited sources and checked before publishing.
Nearest lakes
Common questions
What fish are at Ruby River Reservoir?
Fishing Ruby River Reservoir usually means Rainbow Trout. All 24 plants on record are Rainbow Trout. Rainbow Trout was last stocked June 22, 2026, averaging 4 in. Brown Trout, Brook Trout, Mountain Whitefish, and Arctic Grayling, plus 3 more are recorded here outside the stocking reports.
When is Ruby River Reservoir stocked?
Last stocked June 22, 2026. It is stocked about 1.5 times a year since 2011, most often in June and July. No plants recorded in 2024.
How big are the fish stocked at Ruby River Reservoir?
Rainbow Trout stocked at Ruby River Reservoir average 4 in.
How do you get on Ruby River Reservoir?
Shore fishing is available and no fee is required. The nearest town is Alder. Facilities include camping. From Montana Highway 287, turn south at Alder onto Road 357 and continue about 10 miles to this BLM recreation site on the west side of the road. Fishing, boating, and camping access; no fee. Water levels fluctuate a lot since it is an irrigation reservoir.
Which lakes near Ruby River Reservoir were stocked more recently?
Clark Canyon Reservoir (40.8 mi) was stocked more recently. Clark Canyon Reservoir is also stocked with Rainbow Trout.