Lower Columbia-Clatskanie HUC8 17080003
A 2,977 km² sub-basin of the Pacific Northwest region in OR, WA. 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
65
Moderate
Drought index
80
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
146%
p53 of record
Water assets
3,730
155 springs · 2,244 wells
USGS gauges (2)
- COLUMBIA RIVER AT VANCOUVER, WA1414470092,700 cfsp20 · below normal
- COLUMBIA RIVER AT PORT WESTWARD, NEAR QUINCY, OR14246900234,000 cfsp86 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 80 | 0 | 1/2 | p53 |
Top water assets
- 76Po — Ce S2-25842Cwrisspring
- 76Dm Fs Ir — Cc S2-Cv1P289spring
- 76Well 6 — Industrial/Manufacturing Useswell
- 76En — Ce S2-28872spring
- 76Fs — Ce S2-*15328Cwrisspring
- 76A Well — Domesticwell
- 76Columbia River — Industrial/Manufacturing Usesspring
- 76Columbia River — Industrial/Manufacturing Usesspring
- 76Dm Ir — Ap S2-29161spring
- 73Well 2 — Industrial/Manufacturing Useswell