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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
59
Moderate
Drought index
267
Severe
Area in D2+
66.62%
0% exceptional (D4)
Gauges below normal
40%
of 5 reporting
Median flow
67%
p30 of record
Water assets
2,323
111 springs · 210 wells
USGS gauges (10)
- HAMS FORK BELOW POLE CREEK, NEAR FRONTIER, WY0922300014 cfsp14 · below normal
- Hams Fork at Diamondville, WY0922400024 cfsp21 · below normal
- BLACKS FORK NEAR LITTLE AMERICA, WY0922470037 cfsp30 · normal
- East Fork Smiths Fork near Robertson, WY0922000015 cfsp57 · normal
- BLACKS FORK NEAR ROBERTSON, WY09217900117 cfsp87 · above normal
- BLACKS FORK NEAR MILLBURNE, WY09218500no readingno long-term record
- Blacks Fork bl Blacks Fork Canal, nr Robertson, WY092188508 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, WY092192004 cfsno long-term record
- South Creek at Mountain View, WY092215052 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 267 | 66.62 | 2/5 | p30 |
| 2026-10-20 | 267 | 66.62 | 2/5 | p31 |
| 2026-10-19 | 267 | 66.62 | 2/5 | p41 |
| 2026-10-18 | 267 | 66.62 | 2/5 | p51 |
| 2026-10-17 | 267 | 66.62 | 2/5 | p55 |
| 2026-10-16 | 267 | 66.62 | 1/5 | p76 |
| 2026-10-15 | 267 | 66.62 | 0/5 | p76 |
| 2026-10-14 | 267 | 66.62 | 0/5 | p77 |
| 2026-10-13 | 267 | 66.62 | 0/5 | p38 |
| 2026-10-12 | 267 | 66.62 | 2/5 | p39 |
| 2026-10-11 | 267 | 66.62 | 3/5 | p24 |
| 2026-10-10 | 267 | 66.62 | 3/5 | p21 |
| 2026-10-09 | 267 | 66.62 | 3/5 | p22 |
| 2026-10-08 | 267 | 66.62 | 3/5 | p22 |
Top water assets
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