Acorn Lake Fish Stocking
Montana · 1981–2022 on record
According to Montana fish & wildlife agency, Acorn Lake was last stocked July 25, 2022 with Cutthroat Trout. Acorn Lake has 9 stocking records on file, spanning 1981–2022, with about 9,077 fish stocked over that period.
When Acorn Lake is stocked
By species
Angler's Field Guide
Fishing Tips & Stocking Guide for Acorn Lake
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 Acorn Lake, 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 Acorn Lake was last stocked July 25, 2022, 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 Acorn Lake:
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.
Cutthroat Trout Profile Tips
Known for being relatively easy to catch on dry flies, making it a favorite of western fly anglers; many subspecies are managed under catch-and-release rules to protect native populations.
Recommended Tackle for Acorn Lake
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.
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Nearby stocked waters
Other stocked waters near Acorn Lake, freshest activity first.
Tuffys Lake
3 mi1 species · 4 records
Last stocked August 2024
Outlaw Lake
5 mi1 species · 15 records
Last stocked August 2022
Poacher Lake
2 mi1 species · 10 records
Last stocked July 2006
Thompson River
8 mi4 species · 384 records
Last stocked June 1989
Smileys Slough
11 mi1 species · 1 records
Last stocked July 1979
Thompson Falls Reservoir
8 mi3 species · 7 records
Last stocked April 1974
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| July 25, 2022 | Cutthroat Trout | 996 | 1.31" | Montana fish & wildlife agency |
| August 23, 2017 | Cutthroat Trout | 1,000 | 2" | Montana fish & wildlife agency |
| July 31, 2012 | Cutthroat Trout | 1,008 | 1.65" | Montana fish & wildlife agency |
| July 25, 2007 | Cutthroat Trout | 1,033 | 1.3" | Montana fish & wildlife agency |
| July 17, 2002 | Cutthroat Trout | 991 | 1.7" | Montana fish & wildlife agency |
| July 30, 1997 | Cutthroat Trout | 1,041 | 1.4" | Montana fish & wildlife agency |
| August 6, 1992 | Cutthroat Trout | 1,000 | 0.8" | Montana fish & wildlife agency |
| August 27, 1987 | Cutthroat Trout | 1,008 | 1.9" | Montana fish & wildlife agency |
Show 1 more stocking record →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 11, 1981 | Cutthroat Trout | 1,000 | 1" | Montana fish & wildlife agency |
Frequently asked
When was Acorn Lake last stocked?
According to Montana fish & wildlife agency, Acorn Lake was last stocked July 25, 2022 with Cutthroat Trout.
What fish species are stocked in Acorn Lake?
Acorn Lake is stocked with Cutthroat Trout.
How often is Acorn Lake stocked?
Acorn Lake is stocked intermittently — 9 recorded stockings between 1981 and 2022.
How many fish have been stocked in Acorn Lake?
About 9,077 fish have been stocked in Acorn Lake across 9 recorded events since 1981, per Montana fish & wildlife agency.
What size are the fish stocked in Acorn Lake?
Fish stocked in Acorn Lake average about 1.5 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Acorn Lake?
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 Acorn Lake?
Freshly stocked trout in Acorn Lake 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.