Lower Yellowstone HUC8 10100004
A 13,795 km² sub-basin of the Missouri region in MT, ND. 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
45
Stressed
Drought index
270
Severe
Area in D2+
65.94%
0% exceptional (D4)
Gauges below normal
100%
of 2 reporting
Median flow
54%
p16 of record
Water assets
4,104
26 springs · 1,637 wells
USGS gauges (4)
- Yellowstone River at Glendive, MT063275004,030 cfsp16 · below normal
- Yellowstone River near Sidney MT063295003,120 cfsp16 · below normal
- Cains Coulee at Glendive MT063274505 cfsno long-term record
- Yellowstone River Fish Bypass Channel nr Intake MT06328495570 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 270 | 65.94 | 2/2 | p16 |
Top water assets
- 76Madison Artesian Fossil Well — Eastern Montanafossil_water
- 74Northern Great Plains Aquifer — Fox Hills-Hell Creekaquifer
- 67Cottonwood Creekriver
- 67Robert Johnsonreservoir
- 67Bad Route Creekriver
- 67Yellowstone River At Glendive, Mtriver
- 67Cains Coulee At Glendive Mtriver
- 67Bennie Peer Creekriver
- 67Fox Creekriver
- 67Thirteenmile Creekriver