Big Sandy HUC8 14040104
A 4,600 km² sub-basin of the Upper Colorado region in WY. 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.
Health score
64
Moderate
Drought index
285
Severe
Area in D2+
84.76%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
176%
p72 of record
Water assets
495
38 springs · 241 wells
USGS gauges (2)
- BIG SANDY RIVER NEAR FARSON, WY0921350037 cfsp72 · normal
- Big Sandy River at Gasson Bridge, near Eden, WY0921605035 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 285 | 84.76 | 0/1 | p72 |
Top water assets
- 69Big Sandy Riverriver
- 69Big Sandy Riverriver
- 69Big Sandy Riverriver
- 69Big Sandy Riverriver
- 69Big Sandy River Near Farson, Wyriver
- 69Big Sandy Riverriver
- 69Big Sandy Riverriver
- 69Big Sandy Riverriver
- 69Big Sandy Riverriver
- 69Big Sandy Riverriver