Little Powder HUC8 10090208
A 5,256 km² sub-basin of the Missouri region in MT, WY. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
37
Stressed
Drought index
400
Exceptional
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
2,958
10 springs · 548 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 400 | 100 | — | — |
Top water assets
- 67Horse Creekriver
- 67Cottonwood Creekriver
- 67East Fork Little Powder Riverriver
- 67Wildcat Creekriver
- 67Cottonwood Creekriver
- 67Horse Creekriver
- 67Little Powder Riverriver
- 67Cottonwood Creekriver
- 67Horse Creekriver
- 67Dry Creekriver