Similkameen HUC8 17020007
A 9,270 km² sub-basin of the Pacific Northwest region in CN, 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
34
Stressed
Drought index
327
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
47%
p8 of record
Water assets
814
0 springs · 40 wells
USGS gauges (1)
- SIMILKAMEEN RIVER NEAR NIGHTHAWK, WA12442500267 cfsp8 · much below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 327 | 100 | 1/1 | p8 |
| 2026-10-19 | 327 | 100 | 1/1 | p8 |
| 2026-10-18 | 327 | 100 | 1/1 | p9 |
| 2026-10-17 | 327 | 100 | 1/1 | p8 |
| 2026-10-16 | 327 | 100 | 1/1 | p9 |
| 2026-10-15 | 327 | 100 | 1/1 | p9 |
| 2026-10-14 | 327 | 100 | 1/1 | p9 |
| 2026-10-13 | 327 | 100 | 1/1 | p9 |
| 2026-10-12 | 327 | 100 | 1/1 | p9 |
| 2026-10-11 | 327 | 100 | 1/1 | p8 |
| 2026-10-10 | 327 | 100 | 1/1 | p9 |
| 2026-10-09 | 327 | 100 | 1/1 | p9 |
| 2026-10-08 | 327 | 100 | 1/1 | p9 |
| 2026-10-07 | 327 | 100 | 1/1 | p10 |
Top water assets
- 69Juniper Creekriver
- 69Sinlahekin Creekriver
- 69Mountain Goat Creekriver
- 69Cathedral Forkriver
- 69Ninemile Creekriver
- 69Ramon Creekriver
- 69Beaver Creekriver
- 69Lease Creekriver
- 69Mountain Goat Creekriver
- 69Crosby Creekriver