Umatilla HUC8 17070103
A 6,542 km² sub-basin of the Pacific Northwest region in OR. 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
61
Moderate
Drought index
325
Extreme
Area in D2+
81.31%
0% exceptional (D4)
Gauges below normal
0%
of 4 reporting
Median flow
106%
p62 of record
Water assets
1,687
188 springs · 815 wells
USGS gauges (4)
- MEACHAM CREEK AT GIBBON, OR1402030010 cfsp42 · normal
- UMATILLA R AT W RESERVATION BNDY NR PENDLETON, OR1402085044 cfsp61 · normal
- UMATILLA RIVER NEAR UMATILLA, OR1403350065 cfsp63 · normal
- UMATILLA RIVER ABOVE MEACHAM CREEK, NR GIBBON, OR1402000046 cfsp64 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 325 | 81.31 | 0/4 | p62 |
Top water assets
- 76Butter Creek — Irrigation, Livestock And Domesticspring
- 76Butter Creek — Irrigation, Livestock And Domesticspring
- 76Butter Creek — Irrigation, Livestock And Domesticspring
- 76Butter Creek — Irrigation, Livestock And Domesticspring
- 76Sandhollow Well — Irrigationwell
- 76Umatilla R — Irrigation, Livestock And Domesticspring
- 76Well B2 — Irrigationwell
- 76Well B3 — Irrigationwell
- 76Well B1 — Irrigationwell
- 76Butter Creek — Irrigation, Livestock And Domesticspring