Upper Bighorn HUC8 10080007
A 8,994 km² sub-basin of the Missouri region in 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
39
Stressed
Drought index
389
Extreme
Area in D2+
99.35%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
57%
p10 of record
Water assets
3,118
107 springs · 480 wells
USGS gauges (1)
- BIGHORN RIVER AT BASIN, WY06274300734 cfsp10 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 389 | 99.35 | 1/1 | p10 |
| 2026-10-20 | 389 | 99.35 | 1/1 | p11 |
| 2026-10-19 | 389 | 99.35 | 1/1 | p11 |
| 2026-10-18 | 389 | 99.35 | 1/1 | p14 |
| 2026-10-17 | 389 | 99.35 | 1/1 | p12 |
| 2026-10-16 | 389 | 99.35 | 1/1 | p12 |
| 2026-10-15 | 394 | 100 | 1/1 | p14 |
| 2026-10-14 | 394 | 100 | 1/1 | p13 |
| 2026-10-13 | 394 | 100 | 1/1 | p14 |
| 2026-10-12 | 394 | 100 | 1/1 | p14 |
| 2026-10-11 | 394 | 100 | 1/1 | p11 |
| 2026-10-10 | 394 | 100 | 1/1 | p10 |
| 2026-10-09 | 394 | 100 | 1/1 | p8 |
| 2026-10-08 | 394 | 100 | 1/1 | p9 |
Top water assets
- 69Gooseberry Creekriver
- 69South Fork Owl Creekriver
- 69North Fork Owl Creekriver
- 69Owl Creekriver
- 69South Fork Owl Creekriver
- 69Red Creekriver
- 69Middle Fork Owl Creekriver
- 69Gooseberry Creekriver
- 69Gooseberry Creekriver
- 69Grass Creekriver