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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
40
Stressed
Drought index
181
Moderate
Area in D2+
1.57%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
18%
p7 of record
Water assets
2,062
395 springs · 893 wells
USGS gauges (2)
- NF STILLAGUAMISH RIVER NEAR ARLINGTON, WA12167000190 cfsp7 · much below normal
- STILLAGUAMISH RIVER NEAR STANWOOD, WA121703001,470 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-22 | 181 | 1.57 | 1/1 | p7 |
| 2026-10-21 | 181 | 1.57 | 1/1 | p7 |
| 2026-10-20 | 181 | 1.57 | 1/1 | p7 |
| 2026-10-19 | 181 | 1.57 | 1/1 | p8 |
| 2026-10-18 | 181 | 1.57 | 1/1 | p7 |
| 2026-10-17 | 181 | 1.57 | 1/1 | p7 |
| 2026-10-16 | 181 | 1.57 | 1/1 | p8 |
| 2026-10-15 | 181 | 1.57 | 1/1 | p8 |
| 2026-10-14 | 181 | 1.57 | 1/1 | p8 |
| 2026-10-13 | 181 | 1.57 | 1/1 | p9 |
| 2026-10-12 | 181 | 1.57 | 1/1 | p9 |
| 2026-10-11 | 181 | 1.57 | 1/1 | p10 |
| 2026-10-10 | 181 | 1.57 | 1/1 | p11 |
| 2026-10-09 | 181 | 1.57 | 1/1 | p10 |
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