Lark Reservoir Fish Stocking
Montana · 1970–2025 on record
According to Montana fish & wildlife agency, Lark Reservoir was last stocked August 19, 2025 with Largemouth Bass. Lark Reservoir has 32 stocking records on file, spanning 1970–2025, with about 80,154 fish stocked over that period.
When Lark Reservoir is stocked
Lark Reservoir is typically stocked in spring, most often in April — 14 stocking events in that peak month.
Angler's Field Guide
Fishing Tips & Stocking Guide for Lark 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 Lark 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 Lark Reservoir was last stocked August 19, 2025, 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 Lark 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.
Largemouth Bass Profile Tips
The centerpiece of American bass fishing culture, taken on everything from topwater lures to soft plastics and live bait.
Bluegill Profile Tips
A staple of family and youth fishing programs; readily takes worms, small jigs, and flies.
Recommended Tackle for Lark 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 Lark Reservoir, freshest activity first.
Paleface Reservoir
6 mi4 species · 18 records
Last stocked September 2025
Bresaylor Reservoir
0 mi1 species · 10 records
Last stocked August 2025
Whiteface Reservoir
5 mi2 species · 7 records
Last stocked August 2025
Rebate Reservoir
1 mi2 species · 21 records
Last stocked May 2025
Batosh Reservoir
1 mi1 species · 21 records
Last stocked May 2025
Spanky Reservoir
3 mi1 species · 20 records
Last stocked May 2025
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| August 19, 2025 | Largemouth Bass | 3,000 | 2.91" | Montana fish & wildlife agency |
| August 19, 2024 | Largemouth Bass | 3,000 | 1.41" | Montana fish & wildlife agency |
| July 26, 2021 | Largemouth Bass | 2,000 | 1.88" | Montana fish & wildlife agency |
| November 2, 2020 | Bluegill | 7,500 | 0.66" | Montana fish & wildlife agency |
| July 15, 2020 | Largemouth Bass | 2,000 | 0.78" | Montana fish & wildlife agency |
| August 4, 2004 | Largemouth Bass | 1,000 | 1.3" | Montana fish & wildlife agency |
| April 12, 1994 | Rainbow Trout | 3,000 | 3.1" | Montana fish & wildlife agency |
| April 8, 1993 | Rainbow Trout | 3,010 | 2.9" | Montana fish & wildlife agency |
Show 24 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| April 3, 1992 | Rainbow Trout | 2,470 | 2.9" | Montana fish & wildlife agency |
| April 9, 1991 | Rainbow Trout | 2,486 | 3.2" | Montana fish & wildlife agency |
| April 6, 1990 | Rainbow Trout | 2,500 | 3.3" | Montana fish & wildlife agency |
| April 20, 1989 | Rainbow Trout | 2,498 | 3.5" | Montana fish & wildlife agency |
| April 6, 1988 | Rainbow Trout | 2,500 | 3.4" | Montana fish & wildlife agency |
| April 14, 1987 | Rainbow Trout | 2,460 | 3.3" | Montana fish & wildlife agency |
| May 21, 1986 | Rainbow Trout | 2,502 | 4" | Montana fish & wildlife agency |
| April 15, 1985 | Rainbow Trout | 2,508 | 5" | Montana fish & wildlife agency |
| April 19, 1984 | Rainbow Trout | 2,496 | 4" | Montana fish & wildlife agency |
| May 24, 1983 | Rainbow Trout | 2,511 | 5" | Montana fish & wildlife agency |
| September 8, 1982 | Rainbow Trout | 306 | 9" | Montana fish & wildlife agency |
| May 6, 1982 | Rainbow Trout | 2,524 | 5" | Montana fish & wildlife agency |
| April 21, 1981 | Rainbow Trout | 2,040 | 4" | Montana fish & wildlife agency |
| May 8, 1980 | Rainbow Trout | 2,520 | 5" | Montana fish & wildlife agency |
| July 10, 1979 | Rainbow Trout | 2,534 | 5" | Montana fish & wildlife agency |
| July 24, 1978 | Rainbow Trout | 2,519 | 6" | Montana fish & wildlife agency |
| April 26, 1977 | Rainbow Trout | 2,508 | 4" | Montana fish & wildlife agency |
| April 20, 1976 | Rainbow Trout | 2,522 | 5" | Montana fish & wildlife agency |
| June 11, 1975 | Rainbow Trout | 2,010 | 5" | Montana fish & wildlife agency |
| May 1, 1974 | Rainbow Trout | 2,018 | 4" | Montana fish & wildlife agency |
| October 11, 1973 | Rainbow Trout | 972 | 10" | Montana fish & wildlife agency |
| August 4, 1972 | Rainbow Trout | 3,000 | 6" | Montana fish & wildlife agency |
| April 19, 1971 | Rainbow Trout | 2,000 | 2" | Montana fish & wildlife agency |
| May 28, 1970 | Rainbow Trout | 3,240 | 4" | Montana fish & wildlife agency |
Frequently asked
When was Lark Reservoir last stocked?
According to Montana fish & wildlife agency, Lark Reservoir was last stocked August 19, 2025 with Largemouth Bass.
What fish species are stocked in Lark Reservoir?
Lark Reservoir is stocked with Largemouth Bass, Bluegill, and Rainbow Trout.
What time of year is Lark Reservoir stocked?
Lark Reservoir is typically stocked in spring, most often in April.
How often is Lark Reservoir stocked?
Lark Reservoir is stocked intermittently — 32 recorded stockings between 1970 and 2025.
How many fish have been stocked in Lark Reservoir?
About 80,154 fish have been stocked in Lark Reservoir across 32 recorded events since 1970, per Montana fish & wildlife agency.
What size are the fish stocked in Lark Reservoir?
Fish stocked in Lark Reservoir average about 4.0 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Lark 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 Lark Reservoir?
Freshly stocked trout in Lark 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.