North Santiam HUC8 17090005
A 1,979 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
60
Moderate
Drought index
293
Severe
Area in D2+
87.99%
0% exceptional (D4)
Gauges below normal
13%
of 8 reporting
Median flow
126%
p74 of record
Water assets
562
11 springs · 285 wells
USGS gauges (10)
- NO SANTIAM R BLW BOULDER CRK, NR DETROIT, OR14178000368 cfsp21 · below normal
- NORTH SANTIAM R AT GREENS BRIDGE, NR JEFFERSON, OR141841001,150 cfsp38 · normal
- BREITENBUSH R ABV FRENCH CR NR DETROIT, OR.14179000135 cfsp43 · normal
- NORTH SANTIAM RIVER AT NIAGARA, OR141815001,550 cfsp73 · normal
- NORTH SANTIAM RIVER AT MEHAMA, OR141830001,710 cfsp74 · normal
- BLOWOUT CREEK NEAR DETROIT, OR141803008 cfsp78 · above normal
- SANTIAM RIVER AT JEFFERSON, OR141890002,930 cfsp78 · above normal
- LITTLE NORTH SANTIAM RIVER NEAR MEHAMA, OR1418250072 cfsp80 · above normal
- NORTH SANTIAM RIVER NR MARION FORKS, OR1417445071 cfsno long-term record
- BREITENBUSH RIVER BLW BREITENBUSH HOT SPRINGS, OR14178610103 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 293 | 87.99 | 1/8 | p74 |
Top water assets
- 76Breitenbush Springs — Commercial Usesspring
- 73A Well — Irrigationwell
- 73A Well — Irrigationwell
- 73A Well — Irrigationwell
- 73A Well — Irrigationwell
- 73Infiltration Trench — Irrigationwell
- 73Well 5 — Irrigationwell
- 73Well 4 — Irrigationwell
- 73A Well — Irrigationwell
- 73A Sump — Irrigationwell