South Santiam HUC8 17090006
A 2,697 km² sub-basin of the Pacific Northwest region in OR. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
62
Moderate
Drought index
300
Extreme
Area in D2+
99.87%
0% exceptional (D4)
Gauges below normal
0%
of 8 reporting
Median flow
146%
p76 of record
Water assets
430
15 springs · 207 wells
USGS gauges (12)
- LEBANON SANTIAM CANAL NEAR LEBANON, OR1418760076 cfsp28 · normal
- QUARTZVILLE CREEK NEAR CASCADIA, OR1418590039 cfsp56 · normal
- THOMAS CREEK NEAR SCIO, OR1418880030 cfsp58 · normal
- SOUTH SANTIAM RIVER BELOW CASCADIA, OR1418500073 cfsp75 · above normal
- SOUTH SANTIAM RIVER NEAR FOSTER, OR141872001,540 cfsp77 · above normal
- SOUTH SANTIAM RIVER AT WATERLOO, OR141875001,560 cfsp80 · above normal
- WILEY CREEK NEAR FOSTER, OR1418700019 cfsp83 · above normal
- SCHAFER CREEK NEAR LACOMB, OR141886100 cfsp89 · above normal
- SOUTH SANTIAM RIVER AT UPPER SODA, OR1418430013 cfsno long-term record
- MIDDLE SANTIAM RIVER NR SANTIAM JUNCTION, OR1418560016 cfsno long-term record
- QUARTZVILLE CREEK BLW GALENA CREEK NR CASCADIA, OR1418586514 cfsno long-term record
- CRABTREE CREEK NEAR SCIO, OR1418875039 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 300 | 99.87 | 0/8 | p76 |
Top water assets
- 76Mill Creek — Industrial/Manufacturing Usesspring
- 73Well 2 — Irrigationwell
- 73Well 1 — Irrigationwell
- 73A Well — Irrigationwell
- 73A Well — Irrigationwell
- 73Well 1 — Irrigationwell
- 73South Santiam River — Irrigationspring
- 73A Well — Irrigationwell
- 73Well 1 — Irrigationwell
- 73Well 3 — Irrigationwell