Henry Reservoir Fish Stocking
Montana · 1950–2026 on record
According to Montana fish & wildlife agency, Henry Reservoir was last stocked June 9, 2026 with Rainbow Trout. Henry Reservoir has 57 stocking records on file, spanning 1950–2026, with about 82,957 fish stocked over that period.
When Henry Reservoir is stocked
Henry Reservoir is typically stocked in summer, most often in June — 28 stocking events in that peak month.
Angler's Field Guide
Fishing Tips & Stocking Guide for Henry Reservoir
Practical advice on fish behavior, recommended tackle, and state regulations for anglers fishing in Montana.
Post-Plant Behavior & Timing
Hatchery-raised fish are conditioned to pelleted feed and open raceways. Following a release into Henry Reservoir, they typically congregate in schools near public access points, boat ramps, or inlets for the first 24 to 48 hours while adjusting to natural water conditions.
Since Henry Reservoir was last stocked June 9, 2026, anglers visiting within 1 to 2 weeks of a reported event generally experience the highest activity before fish disperse into deeper cover.
State Regulations & Licensing
- •Fishing License: A valid Montana freshwater fishing license is required for anglers age 16 and older.Purchase Montana license online →
- •Official Rules & Limits: Bag limits, bait restrictions, and seasonal boundaries are set by Montana fish & wildlife agency.Official Montana regulations guidebook →
- •Ethical Conservation: Use barbless hooks and keep fish submerged in water during unhooking.Trout Thermal Advisory: When water temperatures rise above 68°F (20°C), released trout face severe mortality from thermal exhaustion. Target warmwater species or fish early in the morning when lakes and streams warm up.
Recommended Tackle & Presentations
Techniques tailored to the species stocked in Henry Reservoir:
Stocked Trout Tactics
Use light 4–6 lb monofilament or fluorocarbon line. Float scented dough bait (PowerBait) 12–18" off bottom using a sliding slip-sinker rig with a size 14–16 treble hook. For active casting, throw 1/16 to 1/8 oz inline spinners (Panther Martin, Rooster Tail) or small spoons (Kastmaster) along drop-offs.
Bass & Panfish Approach
Target visible structure such as docks, weed lines, and fallen trees. Small 1/32 to 1/16 oz jig heads with soft plastic grubs or live worms under a float work well for crappie and bluegill; soft plastic worms or spinnerbaits work well for bass.
Rainbow Trout Profile Tips
The most commonly targeted stocked trout in the country, taken on bait, spinners, and flies alike; a common first fish for new anglers.
Largemouth Bass Profile Tips
The centerpiece of American bass fishing culture, taken on everything from topwater lures to soft plastics and live bait.
Recommended Tackle for Henry Reservoir
Field-tested tackle and presentations matched to the species stocked here.
Berkley PowerBait Floating Trout Dough
Hatchery-raised trout are conditioned to pelleted scents; scented dough floated 12–18 inches off bottom consistently triggers strikes.
Panther Martin Classic Teardrop Inline Spinner
The heavy convex blade spins instantly upon retrieval, sending vibration through the water that triggers aggressive reaction bites along drop-offs.
Sliding Sinker & Treble Hook Rigging Kit
Sliding egg sinkers allow cautious trout to run with bait without feeling line drag, while size 14–16 treble hooks keep dough bait securely pinned.
Gary Yamamoto 5-inch Custom Senko Stickbaits
The heavy salt-impregnated plastic produces a unique horizontal shimmy on the fall around weed beds, docks, and submerged timber.
As an Amazon Associate, StockedWaters earns from qualifying purchases at no additional cost to you. Recommendations are chosen for hatchery-conditioned fish behavior and ethical rigging. We may receive a referral commission if you buy through these links. Read our editorial policy & standards.
Nearby stocked waters
Other stocked waters near Henry Reservoir, freshest activity first.
Cameron Lake
6 mi1 species · 77 records
Last stocked June 2026
Parsell Pond
9 mi1 species · 29 records
Last stocked June 2026
Walden Reservoir
26 mi1 species · 4 records
Last stocked June 1988
Great Northern Reservoir
26 mi4 species · 9 records
Last stocked July 1982
Violett Reservoir
25 mi1 species · 1 records
Last stocked June 1978
O'Haire Reservoir
18 mi1 species · 19 records
Last stocked May 1966
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 9, 2026 | Rainbow Trout | 2,000 | 5.69" | Montana fish & wildlife agency |
| July 1, 2025 | Rainbow Trout | 2,000 | 5.96" | Montana fish & wildlife agency |
| June 13, 2024 | Rainbow Trout | 2,000 | 5.18" | Montana fish & wildlife agency |
| May 30, 2023 | Rainbow Trout | 2,000 | 4.76" | Montana fish & wildlife agency |
| June 28, 2022 | Rainbow Trout | 1,798 | 6.14" | Montana fish & wildlife agency |
| June 2, 2021 | Rainbow Trout | 2,000 | 5.04" | Montana fish & wildlife agency |
| May 28, 2020 | Rainbow Trout | 2,000 | 3.49" | Montana fish & wildlife agency |
| May 28, 2019 | Rainbow Trout | 2,000 | 4.78" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 12, 2018 | Rainbow Trout | 2,001 | 4.66" | Montana fish & wildlife agency |
| May 30, 2017 | Rainbow Trout | 2,001 | 4.16" | Montana fish & wildlife agency |
| June 2, 2016 | Rainbow Trout | 2,005 | 4.45" | Montana fish & wildlife agency |
| May 29, 2015 | Rainbow Trout | 2,003 | 4.27" | Montana fish & wildlife agency |
| June 10, 2014 | Rainbow Trout | 1,018 | 5.04" | Montana fish & wildlife agency |
| July 2, 2013 | Rainbow Trout | 1,008 | 5.5" | Montana fish & wildlife agency |
| June 12, 2012 | Rainbow Trout | 1,000 | 5.5" | Montana fish & wildlife agency |
| July 7, 2011 | Rainbow Trout | 1,000 | 4.7" | Montana fish & wildlife agency |
| June 14, 2010 | Rainbow Trout | 1,000 | 5.3" | Montana fish & wildlife agency |
| June 16, 2009 | Rainbow Trout | 1,000 | 5" | Montana fish & wildlife agency |
| June 24, 2008 | Rainbow Trout | 1,000 | 5.1" | Montana fish & wildlife agency |
| June 13, 2007 | Rainbow Trout | 1,000 | 4.45" | Montana fish & wildlife agency |
| May 18, 2006 | Rainbow Trout | 1,000 | 4.6" | Montana fish & wildlife agency |
| May 31, 2005 | Rainbow Trout | 1,000 | 4.57" | Montana fish & wildlife agency |
| June 4, 2004 | Rainbow Trout | 1,000 | 3.98" | Montana fish & wildlife agency |
| June 19, 2003 | Rainbow Trout | 1,000 | 4.7" | Montana fish & wildlife agency |
| June 27, 2002 | Rainbow Trout | 1,050 | 5.7" | Montana fish & wildlife agency |
| May 9, 2000 | Rainbow Trout | 1,000 | 3.9" | Montana fish & wildlife agency |
| June 16, 1999 | Rainbow Trout | 1,000 | 4.4" | Montana fish & wildlife agency |
| June 9, 1998 | Rainbow Trout | 1,000 | 4.3" | Montana fish & wildlife agency |
| June 18, 1997 | Rainbow Trout | 1,000 | 4.5" | Montana fish & wildlife agency |
| June 11, 1996 | Rainbow Trout | 1,000 | 4.1" | Montana fish & wildlife agency |
| May 10, 1995 | Rainbow Trout | 1,000 | 4" | Montana fish & wildlife agency |
| May 10, 1994 | Rainbow Trout | 1,000 | 4.3" | Montana fish & wildlife agency |
| April 28, 1993 | Rainbow Trout | 1,000 | 4.3" | Montana fish & wildlife agency |
| April 29, 1992 | Rainbow Trout | 1,000 | 4.5" | Montana fish & wildlife agency |
| May 23, 1991 | Rainbow Trout | 1,000 | 4.8" | Montana fish & wildlife agency |
| June 21, 1990 | Rainbow Trout | 1,000 | 3.9" | Montana fish & wildlife agency |
| May 24, 1989 | Rainbow Trout | 1,010 | 5.1" | Montana fish & wildlife agency |
| June 23, 1986 | Rainbow Trout | 1,000 | 5" | Montana fish & wildlife agency |
| May 6, 1985 | Rainbow Trout | 1,007 | 4" | Montana fish & wildlife agency |
| May 1, 1984 | Rainbow Trout | 1,011 | 4" | Montana fish & wildlife agency |
| June 13, 1983 | Rainbow Trout | 1,002 | 5" | Montana fish & wildlife agency |
| May 14, 1982 | Rainbow Trout | 2,005 | 4" | Montana fish & wildlife agency |
| June 22, 1981 | Rainbow Trout | 2,000 | 4" | Montana fish & wildlife agency |
| May 13, 1980 | Rainbow Trout | 2,000 | 3" | Montana fish & wildlife agency |
| May 13, 1980 | Rainbow Trout | 1,520 | 3" | Montana fish & wildlife agency |
| May 31, 1979 | Rainbow Trout | 1,512 | 5" | Montana fish & wildlife agency |
| May 31, 1979 | Rainbow Trout | 2,016 | 5" | Montana fish & wildlife agency |
| June 27, 1978 | Rainbow Trout | 1,500 | 5" | Montana fish & wildlife agency |
| June 27, 1978 | Rainbow Trout | 2,000 | 5" | Montana fish & wildlife agency |
| May 24, 1977 | Rainbow Trout | 2,000 | 5" | Montana fish & wildlife agency |
Showing 50 of 57 stocking records.
Frequently asked
When was Henry Reservoir last stocked?
According to Montana fish & wildlife agency, Henry Reservoir was last stocked June 9, 2026 with Rainbow Trout.
What fish species are stocked in Henry Reservoir?
Henry Reservoir is stocked with Rainbow Trout and Largemouth Bass.
What time of year is Henry Reservoir stocked?
Henry Reservoir is typically stocked in summer, most often in June.
How often is Henry Reservoir stocked?
Henry Reservoir is stocked intermittently — 57 recorded stockings between 1950 and 2026.
How many fish have been stocked in Henry Reservoir?
About 82,957 fish have been stocked in Henry Reservoir across 57 recorded events since 1950, per Montana fish & wildlife agency.
What size are the fish stocked in Henry Reservoir?
Fish stocked in Henry Reservoir average about 4.6 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Henry Reservoir?
Yes, all anglers age 16 and older generally need a valid Montana freshwater fishing license. Always review current regulations from Montana fish & wildlife agency for site-specific rules, bag limits, or stamps.
How do you catch stocked trout in Henry Reservoir?
Freshly stocked trout in Henry Reservoir typically respond well to floating dough bait (such as PowerBait) floated 12–18 inches off bottom on light 4–6 lb leader, live nightcrawlers under a bobber, and small inline spinners or spoons retrieved along shorelines and drop-offs.