Rainbow Trout Stocked · 33 plants · last June 5, 2024 Best: dawn, dusk Bynum Reservoir fishing
Bynum Reservoir fishing is stocked with Kokanee Salmon, Rainbow Trout, and Walleye on a reservoir. It is stocked about 2.7 times a year since 2011, most often in May and June. Species guides list dawn and dusk for Kokanee Salmon and Rainbow Trout and dawn, dusk, and night for Walleye.
- Last stocked
- June 5, 2024
- · Rainbow Trout
- Plants on record
- 38
- Since 2011
- Species recorded
- 3
- Average size
- 3.1 in
- Elevation
- 4,165.7 ft
Fish at Bynum Reservoir
Around the dates Bynum Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 59.6°F in June, 51.2°F in May, 68.3°F in July, 39.6°F in April. That is air temperature at these coordinates, not water temperature. Open-Meteo
Rainbow Trout Stocked · 33 plants · last June 5, 2024 Best: dawn, dusk 
Kokanee Salmon Stocked · 3 plants · last May 9, 2012 Best: dawn, dusk 
Walleye Stocked · 2 plants · last July 13, 2023 Best: dawn, dusk, night Bynum Reservoir is stocked with fish by the Montana Department of Fish, Wildlife and Parks, and contains ten species of fish. These include brook trout, brown trout, kokanee salmon, rainbow trout, and yellow perch. However, all species are assumed dead due to the dead storage status of the reservoir. (en.wikipedia.org, accessed September 22, 2026)
Drafted by AI from the cited sources and checked before publishing.
How Bynum Reservoir is stocked
No plants recorded in 2016.
Fish stocked in 2011
228,965
Fish stocked in 2012
201,995
Fish stocked in 2013
137,950
Fish stocked in 2014
148,004
Fish stocked in 2015
133,911
Fish stocked in 2017
30,000
Fish stocked in 2018
65,076
Fish stocked in 2019
149,768
Fish stocked in 2020
50,638
Fish stocked in 2021
174,704
Fish stocked in 2022
99,966
Fish stocked in 2023
80,763
Fish stocked in 2024
30,000
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| June 5, 2024 | Rainbow Trout | 30,000 | 3.59 in | report |
| July 13, 2023 | Walleye | 50,763 | 1.97 in | report |
| June 7, 2023 | Rainbow Trout | 30,000 | 3 in | report |
| June 22, 2022 | Walleye | 49,849 | 1.27 in | report |
| June 22, 2022 | Rainbow Trout | 30,000 | 3.29 in | report |
| June 2, 2022 | Rainbow Trout | 20,117 | 4.29 in | report |
| June 9, 2021 | Rainbow Trout | 30,000 | 3.41 in | report |
| May 27, 2021 | Rainbow Trout | 100,702 | 1.8 in | report |
| April 29, 2021 | Rainbow Trout | 44,002 | 3.15 in | report |
| July 8, 2020 | Rainbow Trout | 15,138 | 3.67 in | report |
| July 2, 2020 | Rainbow Trout | 5,500 | 3.79 in | report |
| June 2, 2020 | Rainbow Trout | 30,000 | 3.26 in | report |
| June 18, 2019 | Rainbow Trout | 103,586 | 2.2 in | report |
| June 4, 2019 | Rainbow Trout | 30,000 | 3.5 in | report |
| May 14, 2019 | Rainbow Trout | 16,182 | 2.88 in | report |
| September 11, 2018 | Rainbow Trout | 35,076 | 2.35 in | report |
| June 7, 2018 | Rainbow Trout | 30,000 | 3.1 in | report |
| May 31, 2017 | Rainbow Trout | 30,000 | 3.3 in | report |
| June 17, 2015 | Rainbow Trout | 3,034 | 4.19 in | report |
| June 16, 2015 | Rainbow Trout | 101,433 | 1.9 in | report |
| May 19, 2015 | Rainbow Trout | 29,444 | 4 in | report |
| June 10, 2014 | Rainbow Trout | 25,084 | 4.11 in | report |
| June 10, 2014 | Rainbow Trout | 20,000 | 4.11 in | report |
| June 5, 2014 | Rainbow Trout | 102,920 | 2.2 in | report |
| June 20, 2013 | Rainbow Trout | 63,058 | 2.7 in | report |
| June 10, 2013 | Rainbow Trout | 54,966 | 2.7 in | report |
| June 5, 2013 | Rainbow Trout | 19,926 | 4.25 in | report |
| May 30, 2012 | Rainbow Trout | 50,005 | 2.09 in | report |
| May 25, 2012 | Rainbow Trout | 29,000 | 2.8 in | report |
| May 15, 2012 | Rainbow Trout | 20,013 | 3.96 in | report |
| May 9, 2012 | Kokanee Salmon | 63,041 | 2.68 in | report |
| April 18, 2012 | Kokanee Salmon | 39,936 | 2 in | report |
| August 4, 2011 | Rainbow Trout | 58,335 | 1.97 in | report |
| June 21, 2011 | Rainbow Trout | 13,082 | 3.38 in | report |
| June 1, 2011 | Rainbow Trout | 20,489 | 4.42 in | report |
| June 1, 2011 | Rainbow Trout | 14,121 | 5.03 in | report |
| May 13, 2011 | Rainbow Trout | 20,028 | 3.96 in | report |
| May 12, 2011 | Kokanee Salmon | 102,910 | 3.26 in | report |
Access and facts
- Water type
- reservoir
- Nearest town
- Bynum
- Facilities
- camping, restrooms
Irrigation reservoir built in 1907, 7 miles west of Bynum on Blackleaf Road. FWP's fishing access site has a concrete boat ramp, toilets, and primitive camping. The reservoir is drawn down for irrigation, and the ramp can be unusable at low water.
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 Bynum Reservoir
A significant condition at Bynum Reservoir is that all species are assumed dead due to the dead storage status of the reservoir. (en.wikipedia.org, accessed September 22, 2026)
Drafted by AI from the cited sources and checked before publishing.
Nearest lakes
Common questions
What fish are at Bynum Reservoir?
Fishing Bynum Reservoir usually means Rainbow Trout: Rainbow Trout accounts for 33 of 38 plants on record, ahead of Kokanee Salmon and one more. Rainbow Trout was last stocked June 5, 2024, averaging 3.3 in. Kokanee Salmon was last stocked May 9, 2012, averaging 2.6 in. Walleye was last stocked July 13, 2023, averaging 1.6 in.
When is Bynum Reservoir stocked?
Last stocked June 5, 2024. It is stocked about 2.7 times a year since 2011, most often in May and June. No plants recorded in 2016.
How big are the fish stocked at Bynum Reservoir?
Stocked fish average 3.1 in. Rainbow Trout average 3.3 in. Kokanee Salmon average 2.6 in. Walleye average 1.6 in.
How do you get on Bynum Reservoir?
The nearest town is Bynum. Facilities include camping and restrooms. Irrigation reservoir built in 1907, 7 miles west of Bynum on Blackleaf Road. FWP's fishing access site has a concrete boat ramp, toilets, and primitive camping. The reservoir is drawn down for irrigation, and the ramp can be unusable at low water.
Which lakes near Bynum Reservoir were stocked more recently?
Ostle Reservoir (9.2 mi), Pishkun Reservoir (17.9 mi), Tunnel Lake (22 mi), and Lake Frances (25 mi) were stocked more recently. Ostle Reservoir is also stocked with Rainbow Trout, Pishkun Reservoir is also stocked with Kokanee Salmon and Rainbow Trout, and Lake Frances is also stocked with Walleye.