South Santiam River at Waterloo, OR
Is South Santiam River at Waterloo, OR flooding right now?
South Santiam River at Waterloo, OR measured 3.48 ft on 2026-09-11 01:45:00 UTC. That observation was 8.5 ft below its 12 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
3.48 ft
Streamflow
1,550 cfs
Minor flooding here begins at 12 ft, with major flooding at 16 ft. The highest crest on record was 24.5 ft on Tue, Dec 22, 1964.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 10.2 ft | 6.7 ft below |
| Minor flood | 12 ft | 8.5 ft below |
| Moderate flood | 14 ft | 10.5 ft below |
| Major flood | 16 ft | 12.5 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 24.5 ft | 1964-12-22 |
| 22.85 ft | 1945-12-28 |
| 22 ft | 1931-03-31 |
| 21.1 ft | 1956-12-11 |
| 21.08 ft | 1961-02-10 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| South Santiam River near Foster, OR | 8.9 mi | Linn County |
| Foster Dam Tailwater at Foster, OR | 9.5 mi | Linn County |
| Calapooia River at Holley Oreg | 10.3 mi | Linn County |
| Crabtree Creek near Scio, OR | 12.9 mi | Linn County |
| Wiley Creek near Foster, OR | 13.1 mi | Linn County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.