Willow HUC8 10030204
A 2,573 km² sub-basin of the Missouri region in MT. 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
62
Moderate
Drought index
173
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
651
19 springs · 23 wells
USGS gauges (1)
- Willow Creek near Galata, MT061012000 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 173 | 0 | — | — |
Top water assets
- 68Mccarter North Damreservoir
- 67West Fork Willow Creekriver
- 67Willow Creekriver
- 67West Fork Willow Creekriver
- 67Willow Creekriver
- 67Willow Creekriver
- 67Willow Creekriver
- 67West Fork Willow Creekriver
- 67Willow Creekriver
- 67Eagle Creekriver