Lower Cheyenne HUC8 10120112
A 4,198 km² sub-basin of the Missouri region in SD. 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
41
Stressed
Drought index
200
Severe
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
42%
p8 of record
Water assets
2,234
2 springs · 528 wells
USGS gauges (1)
- CHEYENNE RIVER NEAR PLAINVIEW, SD06438500144 cfsp8 · much below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 200 | 0 | 1/1 | p8 |
Top water assets
- 76Thomas Simonsriver
- 76Kirby L Briggswell
- 76Steve Elshere Land Companyriver
- 76Steve Elshere Land Companyriver
- 76F R Bartholdriver
- 76D F Carlinriver
- 76Zebulon & Megan Hoffmanriver
- 76Quarter Circle Diamondriver
- 76Robert & James Blairriver
- 76Halligan Land Company Lllpriver