Horse HUC8 10180012
A 4,413 km² sub-basin of the Missouri region in NE, 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
36
Stressed
Drought index
366
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
1,024
97 springs · 799 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 366 | 100 | — | — |
Top water assets
- 69Horse Creekriver
- 69Horse Creekriver
- 69Horse Creekriver
- 69Little Bear Creekriver
- 69Hirsig No. 4reservoir
- 69Horse Creekriver
- 69Bear Creekriver
- 69Bear Creekriver
- 69Little Bear Creekriver
- 69Little Bear Creekriver