Lower Green-Diamond HUC8 14060010
A 4,211 km² sub-basin of the Upper Colorado region in CO, UT. 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
63
Moderate
Drought index
200
Severe
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 5 reporting
Median flow
271%
p89 of record
Water assets
1,817
316 springs · 703 wells
USGS gauges (5)
- ASHLEY CREEK BEL UNION CANAL DIV NR JENSEN, UT0927155027 cfsp56 · normal
- BRUSH CREEK NEAR JENSEN, UTAH092635003 cfsp78 · above normal
- BIG BRUSH CRK ABV RED FLEET RES, NR VERNAL, UT0926170046 cfsp89 · above normal
- ASHLEY CREEK NEAR VERNAL, UT09266500190 cfsp92 · much above normal
- ASHLEY CR NR REMEMBER THE MAINE PARK NR VERNAL, UT09271000297 cfsp95 · much above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-18 | 200 | 0 | 0/5 | p89 |
| 2026-10-17 | 200 | 0 | 0/5 | p89 |
| 2026-10-16 | 200 | 0 | 0/5 | p92 |
| 2026-10-15 | 200 | 0 | 0/5 | p93 |
| 2026-10-14 | 200 | 0 | 0/5 | p95 |
| 2026-10-13 | 200 | 0 | 0/5 | p97 |
| 2026-10-12 | 200 | 0 | 0/5 | p97 |
| 2026-10-11 | 200 | 0 | 2/5 | p38 |
| 2026-10-10 | 200 | 0 | 2/5 | p36 |
| 2026-10-09 | 200 | 0 | 2/5 | p36 |
| 2026-10-08 | 200 | 0 | 2/5 | p39 |
| 2026-10-07 | 200 | 0 | 2/5 | p46 |
| 2026-10-06 | 200 | 0 | 2/5 | p50 |
| 2026-10-05 | 200 | 0 | 2/5 | p51 |
Top water assets
- 74Underground Water Wells (2) — Dosxwell
- 74Ashley Spring — Ospring
- 69Ashley Creekriver
- 69Ashley Creek Near Vernal, Utriver
- 69Big Brush Creekriver
- 69Ashley Creekriver
- 69Brush Creekriver
- 69Dry Forkriver
- 69Mosby Canal Near Lapoint, Utriver
- 69South Fork Ashley Creekriver