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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
41
Stressed
Drought index
322
Extreme
Area in D2+
81.37%
0% exceptional (D4)
Gauges below normal
75%
of 4 reporting
Median flow
83%
p11 of record
Water assets
1,687
188 springs · 815 wells
USGS gauges (4)
- MEACHAM CREEK AT GIBBON, OR1402030010 cfsp9 · much below normal
- UMATILLA R AT W RESERVATION BNDY NR PENDLETON, OR1402085050 cfsp10 · much below normal
- UMATILLA RIVER ABOVE MEACHAM CREEK, NR GIBBON, OR1402000043 cfsp13 · below normal
- UMATILLA RIVER NEAR UMATILLA, OR14033500145 cfsp58 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 322 | 81.37 | 3/4 | p11 |
| 2026-10-19 | 322 | 81.37 | 3/4 | p11 |
| 2026-10-18 | 322 | 81.37 | 3/4 | p12 |
| 2026-10-17 | 322 | 81.37 | 3/4 | p12 |
| 2026-10-16 | 322 | 81.37 | 3/4 | p13 |
| 2026-10-15 | 322 | 81.37 | 3/4 | p15 |
| 2026-10-14 | 322 | 81.37 | 2/4 | p21 |
| 2026-10-13 | 322 | 81.37 | 3/4 | p20 |
| 2026-10-12 | 322 | 81.37 | 3/4 | p21 |
| 2026-10-11 | 322 | 81.37 | 2/4 | p23 |
| 2026-10-10 | 322 | 81.37 | 3/4 | p21 |
| 2026-10-09 | 322 | 81.37 | 2/4 | p41 |
| 2026-10-08 | 322 | 81.37 | 2/4 | p44 |
| 2026-10-07 | 322 | 81.37 | 1/4 | p50 |
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