A 9,604 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.
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 43 | 0 | 0/3 | p68 |
| 2026-10-20 | 43 | 0 | 0/3 | p61 |
| 2026-10-19 | 43 | 0 | 0/3 | p52 |
| 2026-10-18 | 43 | 0 | 0/3 | p52 |
| 2026-10-17 | 43 | 0 | 0/3 | p51 |
| 2026-10-16 | 43 | 0 | 0/3 | p51 |
| 2026-10-15 | 43 | 0 | 0/3 | p50 |
| 2026-10-14 | 43 | 0 | 0/3 | p50 |
| 2026-10-13 | 43 | 0 | 0/3 | p50 |
| 2026-10-12 | 43 | 0 | 0/3 | p51 |
| 2026-10-11 | 43 | 0 | 0/3 | p51 |
| 2026-10-10 | 43 | 0 | 0/3 | p51 |
| 2026-10-09 | 43 | 0 | 0/3 | p52 |
| 2026-10-08 | 43 | 0 | 0/3 | p53 |