Willow HUC8 17040205
A 1,792 km² sub-basin of the Pacific Northwest region in ID. 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
43
Stressed
Drought index
299
Severe
Area in D2+
99.46%
0% exceptional (D4)
Gauges below normal
100%
of 3 reporting
Median flow
0%
p10 of record
Water assets
371
5 springs · 53 wells
USGS gauges (3)
- WILLOW CREEK BL TEX CREEK NR RIRIE ID1305794015 cfsp8 · much below normal
- WILLOW CREEK NR RIRIE ID130580000 cfsp10 · below normal
- WILLOW CREEK BLW FLOODWAY CHANNEL NR UCON ID130585300 cfsp10 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 299 | 99.46 | 3/3 | p10 |
| 2026-10-19 | 299 | 99.46 | 3/3 | p10 |
| 2026-10-18 | 299 | 99.46 | 3/3 | p10 |
| 2026-10-17 | 299 | 99.46 | 3/3 | p10 |
| 2026-10-16 | 299 | 99.46 | 3/3 | p10 |
| 2026-10-15 | 357 | 100 | 3/3 | p20 |
| 2026-10-14 | 357 | 100 | 2/3 | p22 |
| 2026-10-13 | 357 | 100 | 2/3 | p25 |
| 2026-10-12 | 357 | 100 | 3/3 | p19 |
| 2026-10-11 | 357 | 100 | 3/3 | p16 |
| 2026-10-10 | 357 | 100 | 3/3 | p13 |
| 2026-10-09 | 357 | 100 | 2/3 | p8 |
| 2026-10-08 | 400 | 100 | 3/3 | p8 |
| 2026-10-07 | 400 | 100 | 3/3 | p8 |
Top water assets
- 69Tex Creekriver
- 69Willow Creekriver
- 69Grays Lake Outletriver
- 69Grays Lake Outletriver
- 69Hell Creekriver
- 69Brockman Creekriver
- 69Gravel Creekriver
- 69Bulls Forkriver
- 69Willow Creek Bl Tex Creek Nr Ririe Idriver
- 69Brockman Creekriver