Grays Harbor HUC8 17100105
A 1,521 km² sub-basin of the Pacific Northwest region in 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
70
Moderate
Drought index
10
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
290
12 springs · 260 wells
USGS gauges (1)
- HUMPTULIPS RIVER BELOW HWY 101 NR HUMPTULIPS, WA12039005no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 10 | 0 | — | — |
Top water assets
- 73Ir — Pe S2-29781spring
- 66Fp Ir — Ap S2-29554spring
- 66Fp Hp Ir — Ap S2-29433spring
- 66Fp Hp Ir — Ap S2-29435spring
- 66Ir — Ap S2-29711spring
- 66Fp Ir — Ap S2-28902spring
- 66Fp Ir — Ap S2-28447spring
- 66Fp Hp Ir — Ap S2-30309spring
- 65Swano Lake Damreservoir
- 65Humptulips River Below Hwy 101 Nr Humptulips, Wariver