A 1,795 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 | 0 | 0 | 0/1 | p95 |
| 2026-10-20 | 0 | 0 | 0/1 | p96 |
| 2026-10-19 | 0 | 0 | 0/1 | p97 |
| 2026-10-18 | 0 | 0 | 0/1 | p97 |
| 2026-10-17 | 0 | 0 | 0/1 | p94 |
| 2026-10-16 | 0 | 0 | 0/1 | p89 |
| 2026-10-15 | 0 | 0 | 0/1 | p78 |
| 2026-10-14 | 0 | 0 | 0/1 | p76 |
| 2026-10-13 | 0 | 0 | 0/1 | p72 |
| 2026-10-12 | 0 | 0 | 0/1 | p87 |
| 2026-10-11 | 0 | 0 | 0/1 | p90 |
| 2026-10-10 | 0 | 0 | 0/1 | p78 |
| 2026-10-09 | 0 | 0 | 0/1 | p67 |
| 2026-10-08 | 0 | 0 | 0/1 | p90 |