Henry Reservoir fishing

Fishing at Henry Reservoir has Rainbow Trout and Brook stickleback on the stocking report. It is stocked about once a year since 2011, most often in May and June. Species guides list dawn and dusk as the active times.

Last stocked

June 9, 2026

Plants on record

16

Since 2011

Species recorded

1

Average size

5 in

Elevation

4,000.1 ft

Access and facts

Nearest town
Whitlash

Private-land reservoir reached via a sign-in box: from Whitlash, go south on Hwy 217 for 13 miles, east on Oilmont Hwy (343) about 2 miles, then left on Henry Road through a ranch to the sign-in box. No call-ahead needed, sign in and follow the posted fish-access signs.

Sources: shore_notes , nearest_town , speciesFound

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How Henry Reservoir is stocked

The first plant of the year usually falls in the second week of June. In 2026 it was June 9, 2026, about when it usually is.

Fish at Henry Reservoir

Fishing Henry Reservoir is most likely to be for Rainbow Trout. All 16 plants on record are Rainbow Trout.

Around the dates Henry Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 59.3°F in June, 50.7°F in May, 67.5°F in July. That is air temperature at these coordinates, not water temperature. Open-Meteo

Rainbow Trout 16 plants
Plants
16 of 16
Last stocked
June 9, 2026
Average length
5 in

Seasons and rigs are on the Rainbow Trout guide.

Fish stocked per year

  • 1,0002011
  • 1,0002012
  • 1,0082013
  • 1,0182014
  • 2,0032015
  • 2,0052016
  • 2,0012017
  • 2,0012018
  • 2,0002019
  • 2,0002020
  • 2,0002021
  • 1,7982022
  • 2,0002023
  • 2,0002024
  • 2,0002025
  • 2,0002026

Stocking history

Showing 15 of 16 plants Showing 16 plants

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
June 9, 2026 Rainbow Trout 2,000 5.69 in report
July 1, 2025 Rainbow Trout 2,000 5.96 in report
June 13, 2024 Rainbow Trout 2,000 5.18 in report
May 30, 2023 Rainbow Trout 2,000 4.76 in report
June 28, 2022 Rainbow Trout 1,798 6.14 in report
June 2, 2021 Rainbow Trout 2,000 5.04 in report
May 28, 2020 Rainbow Trout 2,000 3.49 in report
May 28, 2019 Rainbow Trout 2,000 4.78 in report
June 12, 2018 Rainbow Trout 2,001 4.66 in report
May 30, 2017 Rainbow Trout 2,001 4.16 in report
June 2, 2016 Rainbow Trout 2,005 4.45 in report
May 29, 2015 Rainbow Trout 2,003 4.27 in report
June 10, 2014 Rainbow Trout 1,018 5.04 in report
July 2, 2013 Rainbow Trout 1,008 5.5 in report
June 12, 2012 Rainbow Trout 1,000 5.5 in report
July 7, 2011 Rainbow Trout 1,000 4.7 in report
Show 1 more plant Show less

Species found here

Confirmed present independent of the stocking records above, not from a stocking event.

  • Brook stickleback : Listed alongside rainbow trout in FWP's status-of-the-fishery note for this water; not part of the recorded stocking history. (source)

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