Upper Green HUC8 14040101
A 7,602 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
69
Moderate
Drought index
145
Moderate
Area in D2+
2.3%
0% exceptional (D4)
Gauges below normal
0%
of 3 reporting
Median flow
141%
p79 of record
Water assets
804
117 springs · 392 wells
USGS gauges (5)
- FONTENELLE C NR HERSCHLER RANCH, NR FONTENELLE, WY0921050031 cfsp53 · normal
- GREEN RIVER NEAR LA BARGE, WY092094001,030 cfsp79 · above normal
- GREEN RIVER AT WARREN BRIDGE, NEAR DANIEL, WY09188500340 cfsp83 · above normal
- Forty Rod Creek at Daniel Hatchery, nr Daniel, WY0918902018 cfsno long-term record
- North Cottonwood Cr bl Halverson Cr, nr Daniel, WY091911509 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 145 | 2.3 | 0/3 | p79 |
| 2026-10-19 | 145 | 2.3 | 0/3 | p80 |
| 2026-10-18 | 145 | 2.3 | 0/3 | p80 |
| 2026-10-17 | 145 | 2.3 | 0/3 | p81 |
| 2026-10-16 | 145 | 2.3 | 0/3 | p83 |
| 2026-10-15 | 145 | 2.3 | 0/3 | p84 |
| 2026-10-14 | 145 | 2.3 | 0/3 | p86 |
| 2026-10-13 | 145 | 2.3 | 0/3 | p82 |
| 2026-10-12 | 145 | 2.3 | 0/3 | p76 |
| 2026-10-11 | 145 | 2.3 | 0/3 | p30 |
| 2026-10-10 | 145 | 2.3 | 1/3 | p30 |
| 2026-10-09 | 145 | 2.3 | 0/3 | p33 |
| 2026-10-08 | 145 | 2.3 | 0/3 | p29 |
| 2026-10-07 | 145 | 2.3 | 0/3 | p33 |
Top water assets
- 69Fontenelle Creekriver
- 69North Cottonwood Cr Bl Halverson Cr, Nr Daniel, Wyriver
- 69Fontenelle Creekriver
- 69Green Riverriver
- 69Green River Near La Barge, Wyriver
- 69Roney Creekriver
- 69Fontenelle C Nr Herschler Ranch, Nr Fontenelle, Wyriver
- 69Green River At Warren Bridge, Near Daniel, Wyriver
- 69Fontenelle Creekriver
- 69Fontenelle Creekriver