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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
65
Moderate
Drought index
106
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
33%
of 3 reporting
Median flow
91%
p30 of record
Water assets
2,655
768 springs · 932 wells
USGS gauges (3)
- Judith River above Carr Creek near Utica MT061100207 cfsp8 · much below normal
- Big Spring Cr at R&B Trading Post nr Lewistown MT06111800152 cfsp30 · normal
- Judith River nr mouth, nr Winifred MT06114700352 cfsp41 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 106 | 0 | 1/3 | p30 |
| 2026-10-20 | 106 | 0 | 1/3 | p30 |
| 2026-10-19 | 106 | 0 | 1/3 | p33 |
| 2026-10-18 | 106 | 0 | 1/3 | p35 |
| 2026-10-17 | 106 | 0 | 1/3 | p31 |
| 2026-10-16 | 106 | 0 | 1/3 | p35 |
| 2026-10-15 | 192 | 0 | 1/3 | p46 |
| 2026-10-14 | 192 | 0 | 1/3 | p47 |
| 2026-10-13 | 192 | 0 | 1/3 | p44 |
| 2026-10-12 | 192 | 0 | 1/3 | p66 |
| 2026-10-11 | 192 | 0 | 1/3 | p39 |
| 2026-10-10 | 192 | 0 | 1/3 | p28 |
| 2026-10-09 | 192 | 0 | 2/3 | p18 |
| 2026-10-08 | 192 | 0 | 2/3 | p21 |
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