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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
60
Moderate
Drought index
80
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
88%
p41 of record
Water assets
3,730
155 springs · 2,244 wells
USGS gauges (2)
- COLUMBIA RIVER AT VANCOUVER, WA1414470051,000 cfsp6 · much below normal
- COLUMBIA RIVER AT PORT WESTWARD, NEAR QUINCY, OR14246900150,000 cfsp75 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 80 | 0 | 1/2 | p41 |
| 2026-10-18 | 80 | 0 | 1/2 | p45 |
| 2026-10-17 | 80 | 0 | 0/2 | p60 |
| 2026-10-16 | 80 | 0 | 0/2 | p72 |
| 2026-10-15 | 80 | 0 | 0/2 | p71 |
| 2026-10-14 | 80 | 0 | 0/2 | p78 |
| 2026-10-13 | 80 | 0 | 0/2 | p82 |
| 2026-10-12 | 80 | 0 | 0/2 | p83 |
| 2026-10-11 | 80 | 0 | 0/2 | p82 |
| 2026-10-10 | 80 | 0 | 0/2 | p78 |
| 2026-10-09 | 80 | 0 | 1/2 | p42 |
| 2026-10-08 | 80 | 0 | 0/1 | p81 |
| 2026-10-07 | 80 | 0 | 0/1 | p77 |
| 2026-10-06 | 80 | 0 | 1/2 | p54 |
Top water assets
- 76Po — Ce S2-25842Cwrisspring
- 76Dm Fs Ir — Cc S2-Cv1P289spring
- 76Well 6 — Industrial/Manufacturing Useswell
- 76En — Ce S2-28872spring
- 76Columbia River — Industrial/Manufacturing Usesspring
- 76A Well — Domesticwell
- 76Columbia River — Industrial/Manufacturing Usesspring
- 76Fs — Ce S2-*15328Cwrisspring
- 76Dm Ir — Ap S2-29161spring
- 73Well 2 — Industrial/Manufacturing Useswell