West Nishnabotna HUC8 10240002
A 4,277 km² sub-basin of the Missouri region in IA. 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
74
Moderate
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 2 reporting
Median flow
584%
p91 of record
Water assets
1,584
0 springs · 252 wells
USGS gauges (2)
- West Nishnabotna River at Hancock, IA06807410667 cfsp90 · much above normal
- West Nishnabotna River at Randolph, IA068085001,790 cfsp93 · much above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 0 | 0 | 0/2 | p91 |
| 2026-10-20 | 0 | 0 | 0/2 | p92 |
| 2026-10-19 | 0 | 0 | 0/2 | p93 |
| 2026-10-18 | 0 | 0 | 0/2 | p92 |
| 2026-10-17 | 0 | 0 | 0/2 | p93 |
| 2026-10-16 | 0 | 0 | 0/2 | p93 |
| 2026-10-15 | 0 | 0 | 0/2 | p91 |
| 2026-10-14 | 0 | 0 | 0/2 | p93 |
| 2026-10-13 | 0 | 0 | 0/2 | p93 |
| 2026-10-12 | 0 | 0 | 0/2 | p93 |
| 2026-10-11 | 0 | 0 | 0/2 | p93 |
| 2026-10-10 | 0 | 0 | 0/2 | p94 |
| 2026-10-09 | 0 | 0 | 0/2 | p94 |
| 2026-10-08 | 0 | 0 | 0/2 | p95 |
Top water assets
- 66Tim Temeyer Damreservoir
- 66Hopp Dam (Upper Site)reservoir
- 65West Nishnabotna River At Randolph, Iariver
- 65West Nishnabotna River At Hancock, Iariver
- 65Harold Damreservoir
- 65West Nishnabotna Riverriver
- 65East Branch West Nishnabotna Riverriver
- 65Long Branchriver
- 65Hopp Dam (Lower Site)reservoir
- 65Mud Creekriver