Bonanza Reservoir trout stocking
Meagher County, Montana · lake · 5,574 ft elevation
Bonanza Reservoir was last stocked 5 months ago (May 27, 2026). We have 2 stockings on record since Jun 4, 2025, 1 in the last 12 months (507 fish). Species stocked: rainbow trout.
Last stocked
5 months ago
May 27, 2026
Next planned
Not announced
Last 12 months
1 stocking
507 fish
On record
2 stockings
since Jun 4, 2025
- Number 4 of 11 stocked waters in Meagher County by stocking days.
- Stocked about as often as a typical Montana water on our record.
Weather at Bonanza Reservoir
- Today45°FMostly Sunny1% rain · wind 15 to 21 mph
- Tonight35°FPartly Cloudy1% rain · wind 16 to 24 mph
- Saturday52°FMostly Sunnywind 7 to 18 mph
- Saturday Night37°FPartly Cloudywind 7 to 17 mph
- Sunday53°FMostly Sunnywind 13 to 28 mph
- Sunday Night33°FMostly Cloudy6% rain · wind 7 to 13 mph
Forecast from the National Weather Service for this location, refreshed hourly.
What is stocked
| Species | Stockings | Fish | Fish per stocking | Typical size |
|---|---|---|---|---|
| Rainbow trout | 2 | 1,006 | 503 | 5.0 in |
Stocking history
20261 stocking · 507 fish
| Date | Species | Fish | Size | Since previous | Hatchery |
|---|---|---|---|---|---|
May 27Latest Wednesday | Rainbow trout | 507 | 4.5 in | 51 weeks | Big Springs Trout Hatchery |
20251 stocking · 499 fish
| Date | Species | Fish | Size | Since previous | Hatchery |
|---|---|---|---|---|---|
Jun 4 Wednesday | Rainbow trout | 499 | 5.0 in | Big Springs 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 Bonanza Reservoir?
Meagher County, Montana. The marker is the agency's location for this water; streams are often stocked at several access points.
Stocked waters near Bonanza Reservoir
- Castle Lakelake · 7 mistocked Sep 17, 2025
- Bair Reservoirlake · 9 mistocked Jun 3, 2026
- Hundred Dollar Bill Pond (; Mud Creek Reservoir)lake · 13 mistocked Jun 9, 2026
- Lake Sutherlinlake · 14 mistocked Jun 30, 2026
- Martinsdale Reservoirlake · 14 mistocked May 28, 2026
- Newlan Reservoirlake · 21 mistocked Sep 18, 2026
- Cook Reservoir 2lake · 22 mistocked May 27, 2026
All stocked waters in Meagher CountyStocked this week in Montana
Questions about Bonanza Reservoir
- When was Bonanza Reservoir last stocked?
- The latest reported stocking was May 27, 2026 (rainbow trout, 507 fish), according to Montana agency reports.
- How often is Bonanza Reservoir stocked?
- It was stocked once in the last 12 months.
- Is Bonanza Reservoir stocked often?
- Number 4 of 11 stocked waters in Meagher County by stocking days. Stocked about as often as a typical Montana water on our record. We count each day the agency reported stocking it.
- What kind of trout are stocked in Bonanza Reservoir?
- Rainbow trout (2 stockings, 1,006 fish).