Lower Malheur HUC8 17050117
A 2,457 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
67
Moderate
Drought index
234
Severe
Area in D2+
55.26%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
98%
p50 of record
Water assets
428
34 springs · 38 wells
USGS gauges (1)
- MALHEUR RIVER BELOW NEVADA DAM NEAR VALE OR1323330097 cfsp50 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 234 | 55.26 | 0/1 | p50 |
Top water assets
- 76Malheur River — Irrigation And Domesticspring
- 73Well 2 — Supplemental Irrigationwell
- 73Corbett Creek — Irrigationspring
- 73Pole Creek — Irrigationspring
- 73Well 1 — Supplemental Irrigationwell
- 67Malheur Riverriver
- 67Malheur River Below Nevada Dam Near Vale Orriver
- 67Malheur Riverriver
- 67Malheur Riverriver
- 67Cottonwood Creekriver