Beaver HUC8 10120107
A 4,312 km² sub-basin of the Missouri region in SD, 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
38
Stressed
Drought index
391
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
2,530
182 springs · 529 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 391 | 100 | — | — |
Top water assets
- 76Gcc Dacotah Incriver
- 76Barnard & Lowhamriver
- 76Ira & Anna Pickettwell
- 76Henry C Hollenbeckwell
- 76Wilbur Hasartspring
- 76Donald J/Lynda J Andersenriver
- 76John A Putnamriver
- 76Lloyd Putnamriver
- 73Cora Calvertspring
- 73City Of Newcastlespring