Sunken Rock Lake Fish Stocking
Montana · 1969–2024 on record
According to Montana fish & wildlife agency, Sunken Rock Lake was last stocked September 30, 2024 with Golden Trout. Sunken Rock Lake has 9 stocking records on file, spanning 1969–2024, with about 12,736 fish stocked over that period.
When Sunken Rock Lake is stocked
Angler's Field Guide
Fishing Tips & Stocking Guide for Sunken Rock 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 Sunken Rock 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 Sunken Rock Lake was last stocked September 30, 2024, 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 Sunken Rock 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.
Golden Trout Profile Tips
A bucket-list fish for many western anglers, often requiring a backcountry hike to reach stocked alpine lakes.
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 Sunken Rock 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.
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 Sunken Rock Lake, freshest activity first.
Rainbow Lake #4
2 mi1 species · 13 records
Last stocked June 2025
Rainbow Lake #3
2 mi1 species · 13 records
Last stocked June 2025
Rainbow Lake 5
2 mi1 species · 14 records
Last stocked June 2025
Rainbow Lake 6
2 mi1 species · 14 records
Last stocked June 2025
Rainbow Lake #2
3 mi2 species · 15 records
Last stocked June 2025
Mouse Lake
3 mi1 species · 7 records
Last stocked July 2024
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| September 30, 2024 | Golden Trout | 1,100 | 1.53" | Montana fish & wildlife agency |
| September 11, 2017 | Golden Trout | 1,100 | 1.09" | Montana fish & wildlife agency |
| September 13, 2011 | Golden Trout | 1,000 | 0.93" | Montana fish & wildlife agency |
| September 6, 2005 | Golden Trout | 1,100 | 1.1" | Montana fish & wildlife agency |
| September 22, 1992 | Golden Trout | 718 | 1.6" | Montana fish & wildlife agency |
| September 12, 1991 | Golden Trout | 893 | 0.9" | Montana fish & wildlife agency |
| July 29, 1991 | Golden Trout | 275 | 4.7" | Montana fish & wildlife agency |
| September 15, 1984 | Golden Trout | 2,500 | 1" | Montana fish & wildlife agency |
Show 1 more stocking record →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 1, 1969 | Cutthroat Trout | 4,050 | 3" | Montana fish & wildlife agency |
Frequently asked
When was Sunken Rock Lake last stocked?
According to Montana fish & wildlife agency, Sunken Rock Lake was last stocked September 30, 2024 with Golden Trout.
What fish species are stocked in Sunken Rock Lake?
Sunken Rock Lake is stocked with Golden Trout and Cutthroat Trout.
How often is Sunken Rock Lake stocked?
Sunken Rock Lake is stocked intermittently — 9 recorded stockings between 1969 and 2024.
How many fish have been stocked in Sunken Rock Lake?
About 12,736 fish have been stocked in Sunken Rock Lake across 9 recorded events since 1969, per Montana fish & wildlife agency.
What size are the fish stocked in Sunken Rock Lake?
Fish stocked in Sunken Rock Lake average about 1.8 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Sunken Rock 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 Sunken Rock Lake?
Freshly stocked trout in Sunken Rock 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.