Rainbow Trout Stocked · 19 plants · last May 28, 2026 Best: dawn, dusk Holtan Reservoir fishing
Holtan Reservoir fishing has Rainbow Trout and Yellow Perch on the stocking report. Also recorded: Fathead Minnow and Brook Stickleback. It is stocked about 1.3 times a year since 2011, most often in May and June. Species guides list dawn and dusk for Rainbow Trout and dawn, day, and dusk for Yellow Perch.
- Last stocked
- July 2, 2026
- · Yellow Perch
- Plants on record
- 21
- Since 2011
- Species stocked
- 2 (+2 also recorded)
- Average size
- 3.9 in
- Elevation
- 2,268.9 ft
Fish at Holtan Reservoir
Around the dates Holtan Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 55°F in May, 64.8°F in June, 39.6°F in April, 70.4°F in July. That is air temperature at these coordinates, not water temperature. Open-Meteo
Rainbow Trout Stocked · 19 plants · last May 28, 2026 Best: dawn, dusk 
Yellow Perch Stocked · 2 plants · last July 2, 2026 Best: dawn, day, dusk 
Fathead Minnow Confirmed present Brook Stickleback Confirmed present
Rainbow Trout have been identified in Holtan Reservoir. Surveys have also recorded the presence of Brook Stickleback and Fathead Minnow in the water body. While these species were found, some surveys conducted at Holtan Reservoir indicated 'No Fish Caught'. (fwp-gis.mt.gov, accessed October 5, 2026)
Drafted by AI from the cited sources and checked before publishing.
How Holtan Reservoir is stocked
Fish stocked in 2011
1,500
Fish stocked in 2012
2,507
Fish stocked in 2013
1,003
Fish stocked in 2014
1,000
Fish stocked in 2015
1,000
Fish stocked in 2016
1,000
Fish stocked in 2017
1,000
Fish stocked in 2018
1,000
Fish stocked in 2019
1,000
Fish stocked in 2020
1,000
Fish stocked in 2021
1,000
Fish stocked in 2022
1,000
Fish stocked in 2023
1,000
Fish stocked in 2024
5,500
Fish stocked in 2025
500
Fish stocked in 2026
5,500
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| July 2, 2026 | Yellow Perch | 5,000 | 1.8 in | report |
| May 28, 2026 | Rainbow Trout | 500 | 6.91 in | report |
| June 9, 2025 | Rainbow Trout | 500 | 7.03 in | report |
| August 1, 2024 | Yellow Perch | 5,000 | 1.33 in | report |
| July 18, 2024 | Rainbow Trout | 500 | 7.24 in | report |
| May 17, 2023 | Rainbow Trout | 1,000 | 2.63 in | report |
| May 11, 2022 | Rainbow Trout | 1,000 | 3.25 in | report |
| May 14, 2021 | Rainbow Trout | 1,000 | 3.12 in | report |
| May 12, 2020 | Rainbow Trout | 1,000 | 3.21 in | report |
| May 14, 2019 | Rainbow Trout | 1,000 | 2.65 in | report |
| May 4, 2018 | Rainbow Trout | 1,000 | 2.48 in | report |
| April 14, 2017 | Rainbow Trout | 1,000 | 2.02 in | report |
| April 8, 2016 | Rainbow Trout | 1,000 | 2.09 in | report |
| April 17, 2015 | Rainbow Trout | 1,000 | 2.09 in | report |
| April 17, 2014 | Rainbow Trout | 1,000 | 2.08 in | report |
| June 12, 2013 | Rainbow Trout | 1,003 | 3.43 in | report |
| June 13, 2012 | Rainbow Trout | 502 | 7.79 in | report |
| May 22, 2012 | Rainbow Trout | 1,005 | 7.02 in | report |
| May 9, 2012 | Rainbow Trout | 1,000 | 2.71 in | report |
| June 27, 2011 | Rainbow Trout | 500 | 7.4 in | report |
| June 2, 2011 | Rainbow Trout | 1,000 | 3.36 in | report |
Access and facts
- Nearest town
- Plentywood
Private 4.2-acre pond west of Plentywood; FWP lists landowner permission as required. From Redstone, take MT Hwy 5 east 8 miles, north on Outlook Hwy 2 miles, left on W Carroll Rd 0.9 mile, then left on a two-track about 225 yards.
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 Holtan Reservoir?
Fishing Holtan Reservoir usually means Rainbow Trout: Rainbow Trout accounts for 19 of 21 plants on record, ahead of Yellow Perch. Rainbow Trout was last stocked May 28, 2026, averaging 4.1 in. Yellow Perch was last stocked July 2, 2026, averaging 1.6 in. Fathead Minnow and Brook Stickleback are recorded here outside the stocking reports.
When is Holtan Reservoir stocked?
Last stocked July 2, 2026. It is stocked about 1.3 times a year since 2011, most often in May and June.
How big are the fish stocked at Holtan Reservoir?
Stocked fish average 3.9 in. Rainbow Trout average 4.1 in. Yellow Perch average 1.6 in.
How do you get on Holtan Reservoir?
The nearest town is Plentywood. Private 4.2-acre pond west of Plentywood; FWP lists landowner permission as required. From Redstone, take MT Hwy 5 east 8 miles, north on Outlook Hwy 2 miles, left on W Carroll Rd 0.9 mile, then left on a two-track about 225 yards.