Judith HUC8 10040103
A 7,163 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
59
Moderate
Drought index
193
Moderate
Area in D2+
0.14%
0% exceptional (D4)
Gauges below normal
33%
of 3 reporting
Median flow
84%
p25 of record
Water assets
2,655
768 springs · 932 wells
USGS gauges (3)
- Judith River above Carr Creek near Utica MT061100208 cfsp7 · much below normal
- Big Spring Cr at R&B Trading Post nr Lewistown MT06111800129 cfsp25 · normal
- Judith River nr mouth, nr Winifred MT06114700242 cfsp37 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 193 | 0.14 | 1/3 | p25 |
Top water assets
- 69West Fork Cottonwood Creekriver
- 69Antelope Creekriver
- 69South Fork Judith Riverriver
- 69Yogo Creekriver
- 69Yogo Creekriver
- 69Waite Creekriver
- 69Snow Creekriver
- 69South Fork Judith Riverriver
- 69Yogo Creekriver
- 69East Antelope Creekriver