Stillaguamish HUC8 17110008
A 1,818 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
54
Moderate
Drought index
140
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
63%
p18 of record
Water assets
2,062
395 springs · 893 wells
USGS gauges (2)
- NF STILLAGUAMISH RIVER NEAR ARLINGTON, WA12167000211 cfsp18 · below normal
- STILLAGUAMISH RIVER NEAR STANWOOD, WA121703001,470 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 140 | 0 | 1/1 | p18 |
Top water assets
- 67Marten Creekriver
- 67Alder Creekriver
- 67Saddle Creekriver
- 67Heather Creekriver
- 67Deer Creekriver
- 67North Branch North Fork Stillaguamish Riverriver
- 67South Fork Stillaguamish Riverriver
- 67Little Jim Creekriver
- 67North Branch North Fork Stillaguamish Riverriver
- 67Furland Creekriver