Gardiner Reservoir Fish Stocking
Montana · 1945–2019 on record
According to Montana fish & wildlife agency, Gardiner Reservoir was last stocked April 24, 2019 with Rainbow Trout. Gardiner Reservoir has 51 stocking records on file, spanning 1945–2019, with about 297,951 fish stocked over that period.
When Gardiner Reservoir is stocked
Gardiner Reservoir is typically stocked in spring, most often in April — 26 stocking events in that peak month.
Angler's Field Guide
Fishing Tips & Stocking Guide for Gardiner 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 Gardiner 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 Gardiner Reservoir was last stocked April 24, 2019, 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 Gardiner 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 Gardiner 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 Gardiner Reservoir, freshest activity first.
Craft Pond 2
10 mi3 species · 21 records
Last stocked May 2025
Talcott Pond
2 mi2 species · 21 records
Last stocked May 2025
Craft Pond 1
8 mi3 species · 13 records
Last stocked July 2019
Doug Gardiner Reservoir
0 mi4 species · 5 records
Last stocked August 1992
Richardson Canyon Pond
10 mi1 species · 1 records
Last stocked July 1986
Tauck Brothers Pond
12 mi3 species · 5 records
Last stocked June 1979
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| April 24, 2019 | Rainbow Trout | 6,000 | 1.88" | Montana fish & wildlife agency |
| May 2, 2018 | Rainbow Trout | 6,000 | 2.01" | Montana fish & wildlife agency |
| April 12, 2017 | Rainbow Trout | 6,000 | 1.98" | Montana fish & wildlife agency |
| April 5, 2016 | Rainbow Trout | 6,000 | 1.9" | Montana fish & wildlife agency |
| April 7, 2015 | Rainbow Trout | 6,000 | 1.8" | Montana fish & wildlife agency |
| April 16, 2014 | Rainbow Trout | 6,000 | 2" | Montana fish & wildlife agency |
| April 11, 2013 | Rainbow Trout | 5,000 | 2" | Montana fish & wildlife agency |
| April 19, 2012 | Rainbow Trout | 6,000 | 2.15" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| April 21, 2011 | Rainbow Trout | 6,000 | 2" | Montana fish & wildlife agency |
| April 21, 2010 | Rainbow Trout | 6,000 | 2.6" | Montana fish & wildlife agency |
| April 14, 2009 | Rainbow Trout | 6,000 | 2" | Montana fish & wildlife agency |
| April 6, 2008 | Rainbow Trout | 6,000 | 2.4" | Montana fish & wildlife agency |
| May 16, 2007 | Rainbow Trout | 4,743 | 3.66" | Montana fish & wildlife agency |
| May 18, 2006 | Rainbow Trout | 6,039 | 3.44" | Montana fish & wildlife agency |
| April 1, 2005 | Rainbow Trout | 6,000 | 2.4" | Montana fish & wildlife agency |
| March 25, 2004 | Rainbow Trout | 6,000 | 2.3" | Montana fish & wildlife agency |
| April 15, 2003 | Rainbow Trout | 6,000 | 2.1" | Montana fish & wildlife agency |
| April 15, 2002 | Rainbow Trout | 6,000 | 2.6" | Montana fish & wildlife agency |
| May 1, 2001 | Rainbow Trout | 6,000 | 2.5" | Montana fish & wildlife agency |
| April 6, 2000 | Rainbow Trout | 6,000 | 2.4" | Montana fish & wildlife agency |
| May 24, 1999 | Rainbow Trout | 6,000 | 2.9" | Montana fish & wildlife agency |
| April 28, 1998 | Rainbow Trout | 6,000 | 3.2" | Montana fish & wildlife agency |
| May 9, 1997 | Rainbow Trout | 6,000 | 3.1" | Montana fish & wildlife agency |
| April 26, 1996 | Rainbow Trout | 6,000 | 2.9" | Montana fish & wildlife agency |
| April 27, 1995 | Rainbow Trout | 6,000 | 2.6" | Montana fish & wildlife agency |
| May 9, 1994 | Rainbow Trout | 6,000 | 3.5" | Montana fish & wildlife agency |
| May 13, 1993 | Rainbow Trout | 6,000 | 2.9" | Montana fish & wildlife agency |
| March 20, 1992 | Rainbow Trout | 6,000 | 2.6" | Montana fish & wildlife agency |
| April 25, 1991 | Rainbow Trout | 6,000 | 2.6" | Montana fish & wildlife agency |
| April 12, 1990 | Rainbow Trout | 6,000 | 2.8" | Montana fish & wildlife agency |
| May 23, 1989 | Rainbow Trout | 6,000 | 3.3" | Montana fish & wildlife agency |
| May 16, 1988 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| May 6, 1987 | Rainbow Trout | 6,000 | 0 | Montana fish & wildlife agency |
| April 18, 1986 | Rainbow Trout | 6,000 | 4" | Montana fish & wildlife agency |
| April 9, 1985 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| April 5, 1984 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| May 4, 1983 | Rainbow Trout | 3,000 | 4" | Montana fish & wildlife agency |
| June 3, 1982 | Rainbow Trout | 6,000 | 4" | Montana fish & wildlife agency |
| May 30, 1980 | Rainbow Trout | 6,000 | 2" | Montana fish & wildlife agency |
| June 12, 1978 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| April 14, 1977 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| May 15, 1975 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| May 16, 1974 | Rainbow Trout | 6,000 | 4" | Montana fish & wildlife agency |
| April 2, 1973 | Rainbow Trout | 12,000 | 2" | Montana fish & wildlife agency |
| October 26, 1971 | Rainbow Trout | 6,069 | 9" | Montana fish & wildlife agency |
| April 22, 1969 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| May 17, 1967 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| June 13, 1966 | Rainbow Trout | 6,000 | 3" | Montana fish & wildlife agency |
| September 25, 1964 | Rainbow Trout | 8,000 | 4" | Montana fish & wildlife agency |
| October 19, 1945 | Largemouth Bass | 100 | 3" | Montana fish & wildlife agency |
Showing 50 of 51 stocking records.
Frequently asked
When was Gardiner Reservoir last stocked?
According to Montana fish & wildlife agency, Gardiner Reservoir was last stocked April 24, 2019 with Rainbow Trout.
What fish species are stocked in Gardiner Reservoir?
Gardiner Reservoir is stocked with Rainbow Trout, Largemouth Bass, and Bluegill.
What time of year is Gardiner Reservoir stocked?
Gardiner Reservoir is typically stocked in spring, most often in April.
How often is Gardiner Reservoir stocked?
Gardiner Reservoir is stocked intermittently — 51 recorded stockings between 1945 and 2019.
How many fish have been stocked in Gardiner Reservoir?
About 297,951 fish have been stocked in Gardiner Reservoir across 51 recorded events since 1945, per Montana fish & wildlife agency.
What size are the fish stocked in Gardiner Reservoir?
Fish stocked in Gardiner Reservoir average about 2.9 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Gardiner 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 Gardiner Reservoir?
Freshly stocked trout in Gardiner 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.