Triangle Lake trout stocking
Carbon County, Montana · lake · 9,746 ft elevation
Triangle Lake was last stocked 15 months ago (Aug 5, 2025). We have 1 stocking on record since Aug 5, 2025. Species stocked: Yellowstone cutthroat trout.
Last stocked
15 months ago
Aug 5, 2025
Next planned
Not announced
Last 12 months
0 stockings
On record
1 stocking
since Aug 5, 2025
- Number 4 of 17 stocked waters in Carbon County by stocking days.
- Stocked less often than most Montana waters on our record.
Weather at Triangle Lake
- Overnight20°FMostly Clearwind 13 mph
- Thursday34°FSunny2% rain · wind 10 to 14 mph
- Thursday Night17°FSlight Chance Snow Showers then Mostly Cloudy5% rain · wind 10 to 18 mph
- Friday30°FSunnywind 18 mph
- Friday Night20°FPartly Cloudywind 17 to 22 mph
- Saturday38°FSunnywind 6 to 17 mph
Forecast from the National Weather Service for this location, refreshed hourly.
What is stocked
| Species | Stockings | Fish | Fish per stocking | Typical size |
|---|---|---|---|---|
| Yellowstone cutthroat trout | 1 | 790 | 790 | 2.3 in |
Stocking history
20251 stocking · 790 fish
| Date | Species | Fish | Size | Hatchery |
|---|---|---|---|---|
Aug 5Latest Tuesday | Yellowstone cutthroat trout | 790 | 2.3 in | Yellowstone River Trout Hatchery |
From Montana fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go. Seasons and limits: Montana fishing regulations.
Where is Triangle Lake?
Carbon County, Montana. The marker is the agency's location for this water; streams are often stocked at several access points.
Stocked waters near Triangle Lake
- Glacier Lake (; Emerald Lake)lake · 1 mistocked Aug 4, 2025
- Albino Lakelake · 1 mistocked Aug 5, 2025
- Golden Lakelake · 2 mistocked Aug 5, 2025
- Black Canyon Lakelake · 4 mistocked Aug 5, 2025
- Sundance Lakelake · 7 mistocked Aug 5, 2025
- Greenough Lakelake · 7 mistocked Aug 25, 2026
- Kookoo Lakelake · 8 mistocked Aug 5, 2025
- Big Butte Lakelake · 8 mistocked Oct 7, 2025
All stocked waters in Carbon CountyStocked this week in Montana
Questions about Triangle Lake
- When was Triangle Lake last stocked?
- The latest reported stocking was Aug 5, 2025 (Yellowstone cutthroat trout, 790 fish), according to Montana agency reports.
- Is Triangle Lake stocked often?
- Number 4 of 17 stocked waters in Carbon County by stocking days. Stocked less often than most Montana waters on our record. We count each day the agency reported stocking it.
- What kind of trout are stocked in Triangle Lake?
- Yellowstone cutthroat trout (1 stocking, 790 fish).