Rainbow Lake, Upper Fish Stocking
Montana · 1977–1997 on record
According to Montana fish & wildlife agency, Rainbow Lake, Upper was last stocked August 19, 1997 with Cutthroat Trout. Rainbow Lake, Upper has 6 stocking records on file, spanning 1977–1997, with about 3,992 fish stocked over that period.
When Rainbow Lake, Upper is stocked
Angler's Field Guide
Fishing Tips & Stocking Guide for Rainbow Lake, Upper
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 Rainbow Lake, Upper, 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 Rainbow Lake, Upper was last stocked August 19, 1997, 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 Rainbow Lake, Upper:
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.
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.
Recommended Tackle for Rainbow Lake, Upper
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 Rainbow Lake, Upper, freshest activity first.
Expedition Lake
8 mi2 species · 15 records
Last stocked September 2024
Lake Ha Hand
9 mi1 species · 14 records
Last stocked September 2024
Sunset Lake
9 mi1 species · 15 records
Last stocked September 2024
Hilgard Lake
10 mi2 species · 16 records
Last stocked September 2024
Lizard Lake, Lower
8 mi2 species · 16 records
Last stocked July 2015
Gnome Lake
10 mi1 species · 10 records
Last stocked July 2013
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 19, 1997 | Cutthroat Trout | 500 | 2.2" | Montana fish & wildlife agency |
| August 13, 1996 | Cutthroat Trout | 500 | 2.3" | Montana fish & wildlife agency |
| August 13, 1993 | Cutthroat Trout | 500 | 2.2" | Montana fish & wildlife agency |
| August 7, 1991 | Cutthroat Trout | 500 | 2" | Montana fish & wildlife agency |
| August 6, 1984 | Cutthroat Trout | 1,000 | 1" | Montana fish & wildlife agency |
| July 22, 1977 | Rainbow Trout | 992 | 4" | Montana fish & wildlife agency |
Frequently asked
When was Rainbow Lake, Upper last stocked?
According to Montana fish & wildlife agency, Rainbow Lake, Upper was last stocked August 19, 1997 with Cutthroat Trout.
What fish species are stocked in Rainbow Lake, Upper?
Rainbow Lake, Upper is stocked with Cutthroat Trout and Rainbow Trout.
How often is Rainbow Lake, Upper stocked?
Rainbow Lake, Upper is stocked intermittently — 6 recorded stockings between 1977 and 1997.
How many fish have been stocked in Rainbow Lake, Upper?
About 3,992 fish have been stocked in Rainbow Lake, Upper across 6 recorded events since 1977, per Montana fish & wildlife agency.
What size are the fish stocked in Rainbow Lake, Upper?
Fish stocked in Rainbow Lake, Upper average about 2.3 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Rainbow Lake, Upper?
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 Rainbow Lake, Upper?
Freshly stocked trout in Rainbow Lake, Upper 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.