Hells Canyon HUC8 17060101
A 1,402 km² sub-basin of the Pacific Northwest region in ID, OR. 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
56
Moderate
Drought index
238
Severe
Area in D2+
37.58%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
766
1 springs · 0 wells
USGS gauges (1)
- SNAKE RIVER AT HELLS CANYON DAM ID-OR STATE LINE1329045012,700 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 238 | 37.58 | — | — |
| 2026-10-19 | 238 | 37.58 | — | — |
| 2026-10-18 | 238 | 37.58 | — | — |
| 2026-10-17 | 238 | 37.58 | — | — |
| 2026-10-16 | 238 | 37.58 | — | — |
| 2026-10-15 | 238 | 37.58 | — | — |
| 2026-10-14 | 238 | 37.58 | — | — |
| 2026-10-13 | 238 | 37.58 | — | — |
| 2026-10-12 | 238 | 37.58 | — | — |
| 2026-10-11 | 238 | 37.58 | — | — |
| 2026-10-10 | 238 | 37.58 | — | — |
| 2026-10-09 | 238 | 37.58 | — | — |
| 2026-10-08 | 238 | 37.58 | — | — |
| 2026-10-07 | 238 | 37.58 | — | — |
Top water assets
- 69Deep Creekriver
- 69Bernard Creekriver
- 69Devils Farm Creekriver
- 69West Fork Sheep Creekriver
- 69West Fork Sheep Creekriver
- 69Granite Creekriver
- 69Granite Creekriver
- 69Deep Creekriver
- 69East Fork Sheep Creekriver
- 69East Fork Sheep Creekriver