Olga Lake Fish Stocking
Montana · 2001–2022 on record
According to Montana fish & wildlife agency, Olga Lake was last stocked July 20, 2022 with Arctic Grayling. Olga Lake has 13 stocking records on file, spanning 2001–2022, with about 105,926 fish stocked over that period.
When Olga Lake is stocked
Olga Lake is typically stocked in summer, most often in July — 7 stocking events in that peak month.
Angler's Field Guide
Fishing Tips & Stocking Guide for Olga 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 Olga 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 Olga Lake was last stocked July 20, 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 Olga 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.
Arctic Grayling Profile Tips
A popular dry-fly target in Montana and Utah's high-country waters, prized for its willingness to rise.
Golden Trout Profile Tips
A bucket-list fish for many western anglers, often requiring a backcountry hike to reach stocked alpine lakes.
Recommended Tackle for Olga 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 Olga Lake, freshest activity first.
Murphy Lake
3 mi5 species · 43 records
Last stocked August 2024
Whale Lake
7 mi1 species · 9 records
Last stocked August 2024
Brimstone Lake
8 mi2 species · 28 records
Last stocked July 2023
Frank Lake
6 mi4 species · 145 records
Last stocked May 2023
Timber Lake
7 mi1 species · 85 records
Last stocked May 2023
Glen Creek
7 mi1 species · 2 records
Last stocked April 2009
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| July 20, 2022 | Arctic Grayling | 9,900 | 1.64" | Montana fish & wildlife agency |
| June 8, 2021 | Arctic Grayling | 10,000 | 0.9" | Montana fish & wildlife agency |
| July 21, 2015 | Arctic Grayling | 9,900 | 2" | Montana fish & wildlife agency |
| July 21, 2013 | Arctic Grayling | 10,000 | 2" | Montana fish & wildlife agency |
| June 10, 2009 | Arctic Grayling | 15,000 | 1" | Montana fish & wildlife agency |
| July 17, 2008 | Arctic Grayling | 9,000 | 0.5" | Montana fish & wildlife agency |
| June 25, 2006 | Golden Trout | 1,000 | 5" | Montana fish & wildlife agency |
| June 8, 2006 | Arctic Grayling | 9,926 | 0.7" | Montana fish & wildlife agency |
Show 5 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 30, 2005 | Arctic Grayling | 9,500 | 0.6" | Montana fish & wildlife agency |
| July 30, 2002 | Arctic Grayling | 2,000 | 0.8" | Montana fish & wildlife agency |
| June 26, 2002 | Arctic Grayling | 11,200 | 0.7" | Montana fish & wildlife agency |
| July 2, 2001 | Arctic Grayling | 4,500 | 0.8" | Montana fish & wildlife agency |
| July 2, 2001 | Arctic Grayling | 4,000 | 0.8" | Montana fish & wildlife agency |
Frequently asked
When was Olga Lake last stocked?
According to Montana fish & wildlife agency, Olga Lake was last stocked July 20, 2022 with Arctic Grayling.
What fish species are stocked in Olga Lake?
Olga Lake is stocked with Arctic Grayling and Golden Trout.
What time of year is Olga Lake stocked?
Olga Lake is typically stocked in summer, most often in July.
How often is Olga Lake stocked?
Olga Lake is stocked intermittently — 13 recorded stockings between 2001 and 2022.
How many fish have been stocked in Olga Lake?
About 105,926 fish have been stocked in Olga Lake across 13 recorded events since 2001, per Montana fish & wildlife agency.
What size are the fish stocked in Olga Lake?
Fish stocked in Olga Lake average about 1.3 inches, based on the sizes the agency reported.
Do you need a fishing license to fish Olga 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 Olga Lake?
Freshly stocked trout in Olga 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.