Blacks Fork HUC8 14040107
A 7,106 km² sub-basin of the Upper Colorado region in UT, 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
59
Moderate
Drought index
274
Severe
Area in D2+
74.14%
0% exceptional (D4)
Gauges below normal
33%
of 6 reporting
Median flow
103%
p50 of record
Water assets
2,323
111 springs · 210 wells
USGS gauges (10)
- HAMS FORK BELOW POLE CREEK, NEAR FRONTIER, WY092230007 cfsp9 · much below normal
- BLACKS FORK NEAR LITTLE AMERICA, WY092247007 cfsp23 · below normal
- Hams Fork at Diamondville, WY0922400023 cfsp47 · normal
- BLACKS FORK NEAR MILLBURNE, WY09218500101 cfsp54 · normal
- East Fork Smiths Fork near Robertson, WY0922000043 cfsp69 · normal
- BLACKS FORK NEAR ROBERTSON, WY0921790081 cfsp76 · above normal
- Blacks Fork bl Blacks Fork Canal, nr Robertson, WY0921885035 cfsno long-term record
- Blacks Fork bl Little Blacks Fk at Fort Bridger WY092188950 cfsno long-term record
- Blacks Fork above Smiths Fork, near Lyman, WY092192001 cfsno long-term record
- South Creek at Mountain View, WY092215057 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 274 | 74.14 | 2/6 | p50 |
Top water assets
- 69Blacks Forkriver
- 69Hams Forkriver
- 69Hams Forkriver
- 69Hams Forkriver
- 69Blacks Forkriver
- 69Cottonwood Creekriver
- 69Archie Creekriver
- 69Hams Fork Below Pole Creek, Near Frontier, Wyriver
- 69Blacks Fork Near Little America, Wyriver
- 69Hams Forkriver