A 5,165 km² sub-basin of the Upper Colorado region in AZ, CO, NM, UT. 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.
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 313 | 100 | 1/2 | p26 |