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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
40
Stressed
Drought index
209
Severe
Area in D2+
8.94%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
31%
p5 of record
Water assets
2,234
2 springs · 528 wells
USGS gauges (1)
- CHEYENNE RIVER NEAR PLAINVIEW, SD0643850061 cfsp5 · much below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 209 | 8.94 | 1/1 | p5 |
| 2026-10-20 | 209 | 8.94 | 1/1 | p6 |
| 2026-10-19 | 209 | 8.94 | 1/1 | p6 |
| 2026-10-18 | 209 | 8.94 | 1/1 | p6 |
| 2026-10-17 | 209 | 8.94 | 1/1 | p6 |
| 2026-10-16 | 209 | 8.94 | 1/1 | p3 |
| 2026-10-15 | 209 | 8.94 | 1/1 | p5 |
| 2026-10-14 | 209 | 8.94 | 1/1 | p7 |
| 2026-10-13 | 209 | 8.94 | 1/1 | p4 |
| 2026-10-12 | 209 | 8.94 | 1/1 | p3 |
| 2026-10-11 | 209 | 8.94 | 1/1 | p4 |
| 2026-10-10 | 209 | 8.94 | 1/1 | p4 |
| 2026-10-09 | 209 | 8.94 | 1/1 | p7 |
| 2026-10-08 | 209 | 8.94 | 1/1 | p6 |
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