Niobrara Headwaters HUC8 10150002
A 3,838 km² sub-basin of the Missouri region in NE, WY. 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
41
Stressed
Drought index
345
Extreme
Area in D2+
98.19%
13.35% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
741
0 springs · 452 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 345 | 98.19 | — | — |
| 2026-10-20 | 345 | 98.19 | — | — |
| 2026-10-19 | 345 | 98.19 | — | — |
| 2026-10-18 | 345 | 98.19 | — | — |
| 2026-10-17 | 345 | 98.19 | — | — |
| 2026-10-16 | 345 | 98.19 | — | — |
| 2026-10-15 | 345 | 98.19 | — | — |
| 2026-10-14 | 345 | 98.19 | — | — |
| 2026-10-13 | 345 | 98.19 | — | — |
| 2026-10-12 | 345 | 98.19 | — | — |
| 2026-10-11 | 345 | 98.19 | — | — |
| 2026-10-10 | 345 | 98.19 | — | — |
| 2026-10-09 | 345 | 98.19 | — | — |
| 2026-10-08 | 345 | 98.19 | — | — |
Top water assets
- 67Niobrara Riverriver
- 67Van Tassell Creekriver
- 67Niobrara Riverriver
- 67Whistle Creekriver
- 67Niobrara Riverriver
- 67Niobrara Riverriver
- 67Niobrara Riverriver
- 67Niobrara Riverriver
- 67Niobrara Riverriver
- 67Niobrara Riverriver