Martinsdale Reservoir trout stocking
Wheatland County, Montana · lake · 4,781 ft elevation
Martinsdale Reservoir was last stocked 5 months ago (May 28, 2026). We have 4 stockings on record since May 20, 2025, 2 in the last 12 months (55,000 fish). Most stockings come in May. Species stocked: rainbow trout.
- The third most stocked of 5 waters in Wheatland County.
- Stocked more often than 83% of Montana waters on our record.
River conditions
USGS gage: Musselshell River nr Martinsdale, MT (4 km away).
- Flow
- 0 cfs
- Gage height
- 0.00 ft
Latest reading Nov 9, 2026, 8:15 AM UTC. USGS data are provisional. Gage page at USGS.
Weather at Martinsdale Reservoir
- Today53°FSunnywind 2 to 6 mph
- Tonight28°FMostly Clearwind 3 to 15 mph
- Thursday52°FMostly Sunny10% rain · wind 12 to 17 mph
- Thursday Night30°FPartly Cloudy10% rain · wind 12 to 18 mph
- Friday50°FSunnywind 18 to 26 mph
- Friday Night34°FPartly Cloudywind 18 to 30 mph
Forecast from the National Weather Service for this location, refreshed hourly.
When is Martinsdale Reservoir stocked?
Most stockings come in May.
By month, all years
Year by year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2 | |||||||||||
| 2025 | 2 |
What is stocked
| Species | Stockings | Fish | Fish per stocking | Typical size |
|---|---|---|---|---|
| Rainbow trout | 4 | 110,000 | 27,500 | 5.3 in |
Stocking history
20262 stockings · 55,000 fish
| Date | Species | Fish | Size | Since previous | Hatchery |
|---|---|---|---|---|---|
May 28Latest Thursday | Rainbow trout | 29,728 | 5.3 in | 2 weeks | Giant Springs Trout Hatchery |
May 14 Thursday | Rainbow trout | 25,272 | 5.3 in | 358 days | Giant Springs Trout Hatchery |
20252 stockings · 55,000 fish
| Date | Species | Fish | Size | Since previous | Hatchery |
|---|---|---|---|---|---|
May 21 Wednesday | Rainbow trout | 20,569 | 5.3 in | 1 day | Giant Springs Trout Hatchery |
May 20 Tuesday | Rainbow trout | 34,431 | 5.3 in | Giant 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 Martinsdale Reservoir?
Wheatland County, Montana. The marker is the agency's location for this water; streams are often stocked at several access points.
Stocked waters near Martinsdale Reservoir
- Hundred Dollar Bill Pond (; Mud Creek Reservoir)lake · 8 mistocked Jun 9, 2026
- Bonanza Reservoirlake · 14 mistocked May 27, 2026
- Bair Reservoirlake · 17 mistocked Jun 3, 2026
- Castle Lakelake · 21 mistocked Sep 17, 2025
- Chief Joseph Pondlake · 21 mistocked Jun 5, 2026
- Sunlight Lakelake · 24 mistocked Aug 4, 2025
All stocked waters in Wheatland CountyStocked this week in Montana
Questions about Martinsdale Reservoir
- When was Martinsdale Reservoir last stocked?
- The latest reported stocking was May 28, 2026 (rainbow trout, 29,728 fish), according to Montana agency reports.
- How often is Martinsdale Reservoir stocked?
- It was stocked 2 times in the last 12 months. Across all years on record, most stockings come in May.
- Is Martinsdale Reservoir stocked often?
- The third most stocked of 5 waters in Wheatland County. Stocked more often than 83% of Montana waters on our record. We count each day the agency reported stocking it.
- What kind of trout are stocked in Martinsdale Reservoir?
- Rainbow trout (4 stockings, 110,000 fish).