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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
49
Stressed
Drought index
278
Severe
Area in D2+
78.2%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
495
38 springs · 241 wells
USGS gauges (2)
- BIG SANDY RIVER NEAR FARSON, WY09213500no readingno long-term record
- Big Sandy River at Gasson Bridge, near Eden, WY0921605035 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-18 | 278 | 78.2 | — | — |
| 2026-10-17 | 278 | 78.2 | — | — |
| 2026-10-16 | 278 | 78.2 | — | — |
| 2026-10-15 | 279 | 78.85 | — | — |
| 2026-10-14 | 279 | 78.85 | — | — |
| 2026-10-13 | 279 | 78.85 | — | — |
| 2026-10-12 | 279 | 78.85 | — | — |
| 2026-10-11 | 279 | 78.85 | — | — |
| 2026-10-10 | 279 | 78.85 | — | — |
| 2026-10-09 | 279 | 78.85 | — | — |
| 2026-10-08 | 279 | 78.85 | — | — |
| 2026-10-07 | 279 | 78.85 | — | — |
| 2026-10-06 | 279 | 78.85 | — | — |
| 2026-10-05 | 279 | 78.85 | — | — |
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