Major Flood
16 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
14 ft
Minor Flood
12 ft
Action Stage
10.2 ft
What Floods at Each Level
16 ft
expect widespread flooding of low-lying farmland and property from Sweet Home downstream to Lebanon, with some flooding of secondary roads near the South Santiam.
12 ft
expect flooding of low-lying areas along the river.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 21, 1964 | 24.5 ft | 95,200 cfs |
| Dec 27, 1945 | 22.85 ft | 74,200 cfs |
| Mar 30, 1931 | 22 ft | 70,000 cfs |
About This Gauge
USGS Site
NWS LID
WTLO3
River
S. Santiam River
County
Linn, OR
Coordinates
44.4978°N, 122.8219°W
Get Flood Alerts for S. Santiam River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of S. Santiam River at Waterloo?
The S. Santiam River at Waterloo gauge is maintained by USGS (site 14187500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for S. Santiam River at Waterloo?
The NWS-defined flood stage for S. Santiam River at Waterloo is 12 feet. Action stage begins at 10.2 feet. Moderate flooding starts at 14 feet, and major flooding at 16 feet.
How do I get alerts when S. Santiam River rises?
Download StormCast free on Google Play, go to River Gauges, and add S. Santiam River at Waterloo to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the S. Santiam River at Waterloo gauge located?
The gauge is located in Linn County, Oregon at coordinates 44.4978°N, 122.8219°W. USGS site number: 14187500. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers