Willapa Bay HUC8 17100106
A 3,282 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
55
Moderate
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 2 reporting
Median flow
29%
p11 of record
Water assets
850
62 springs · 747 wells
USGS gauges (2)
- WILLAPA RIVER NEAR WILLAPA, WA1201350031 cfsp10 · much below normal
- NASELLE RIVER NEAR NASELLE, WA1201000035 cfsp12 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-18 | 0 | 0 | 2/2 | p11 |
| 2026-10-17 | 0 | 0 | 2/2 | p10 |
| 2026-10-16 | 0 | 0 | 2/2 | p10 |
| 2026-10-15 | 0 | 0 | 2/2 | p9 |
| 2026-10-14 | 0 | 0 | 2/2 | p11 |
| 2026-10-13 | 0 | 0 | 2/2 | p14 |
| 2026-10-12 | 0 | 0 | 2/2 | p15 |
| 2026-10-11 | 0 | 0 | 2/2 | p21 |
| 2026-10-10 | 0 | 0 | 1/2 | p23 |
| 2026-10-09 | 0 | 0 | 2/2 | p17 |
| 2026-10-08 | 0 | 0 | 2/2 | p18 |
| 2026-10-07 | 0 | 0 | 2/2 | p22 |
| 2026-10-06 | 0 | 0 | 1/2 | p27 |
| 2026-10-05 | 0 | 0 | 0/2 | p31 |
Top water assets
- 76Fp Hp Ir — Pe S2-29678spring
- 73Fp Hp Ir — Pe S2-28852spring
- 73Fp Ir — Ap S2-28380spring
- 73Ir — Ap G2-29100spring
- 73Fp Ir — Ap S2-28381spring
- 73Ir — Ap S2-28690spring
- 73Ir — Ap G2-28691spring
- 73Mu — Ap S2-29450spring
- 66Ir — Pe S2-29561spring
- 66Ir — Ap S2-29685spring