Colville HUC8 17020003
A 2,635 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
48
Stressed
Drought index
206
Severe
Area in D2+
5.96%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
59%
p10 of record
Water assets
1,873
0 springs · 1,173 wells
USGS gauges (1)
- COLVILLE RIVER AT KETTLE FALLS, WA1240900067 cfsp10 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-18 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-17 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-16 | 206 | 5.96 | 1/1 | p11 |
| 2026-10-15 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-14 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-13 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-12 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-11 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-10 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-09 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-08 | 206 | 5.96 | 1/1 | p11 |
| 2026-10-07 | 206 | 5.96 | 1/1 | p10 |
| 2026-10-06 | 206 | 5.96 | 1/1 | p11 |
Top water assets
- 67South Fork Mill Creekriver
- 67Hartill Creekriver
- 67Mill Creekriver
- 67Krumm Creekriver
- 67South Fork Chewelah Creekriver
- 67Bayley Creekriver
- 67North Fork Chewelah Creekriver
- 67Cole Creekriver
- 67Aspen Creekriver
- 67South Fork Mill Creekriver