Alsea River near Tidewater
Oregon — Water Level & Flood Stage
Located in Lincoln County, Oregon on the Alsea River. Live water level data from USGS gauge 14306500, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
23 ft
31,000 cfs
Moderate Flood
21 ft
26,000 cfs
Minor Flood
18 ft
20,000 cfs
Action Stage
16 ft
16,700 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
28.5 ft
the flow is about 45,000 cfs and has a 1 percent chance of being exceeded in a given year (aka the 100-year flood).
27.2 ft
the flow is about 41,000 cfs and has a 2 percent chance of being exceeded in any given year (aka the 50-year flood).
25.5 ft
the flow is about 37,000 cfs and has a 4 percent chance of being exceeded in any give year (aka the 25-year flood).
24 ft
expect flooding of numerous homes in the Little Albany area along with widespread flooding of numerous roads and structures along the river.
23 ft
flooding begins at 'Alsea Riviera' and 'Little Albany' between Milepost 8 and 10 near Tidewater along State Hwy 34. Widespread lowland and pasture flooding will also continue. At this level, the flow is about 31,000 cfs and has a 10 percent chance of being exceeded in any given year (aka the 10-year flood).
21.5 ft
the flow is about 27,000 cfs and has a 20 percent chance of being exceeded in a given year (aka 5-year flood).
21 ft
expect widespread flooding along the Alsea. Flood waters will likely inundate property around homes and structures in communities along the Alsea, such as Tidewater, Alsea Riviera, Little Switzerland, and Little Albany. Erosion along the Alsea and tributary creeks may also cause localized damage.
20 ft
water begins to surround houses at the 'Little Albany' community on Highway 34 near Milepost 8. Widespread pasture and dairy land flooding can be expected. Flooding of numerous roads along and near the river occurs at this level.
18 ft
expect minor flooding of low-lying pasture land, roads, and a few structures close to the river. The flow
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 |
|---|---|---|
| Feb 2, 1890 | 29.5 ft | -9,999 cfs |
| Feb 2, 1890 | 29.5 ft | -9,999 cfs |
| Dec 21, 1964 | 27.44 ft | 41,800 cfs |
| Dec 21, 1964 | 27.44 ft | 41,800 cfs |
| Jan 20, 1972 | 25.71 ft | 37,000 cfs |
About This Gauge
Get Flood Alerts for Alsea 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 Alsea River near Tidewater?
The Alsea River near Tidewater gauge is maintained by USGS (site 14306500) 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 Alsea River near Tidewater?
The NWS-defined flood stage for Alsea River near Tidewater is 18 feet. Action stage begins at 16 feet. Moderate flooding starts at 21 feet, and major flooding at 23 feet.
How do I get alerts when Alsea River rises?
Download StormCast free on Google Play, go to River Gauges, and add Alsea River near Tidewater to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Alsea River near Tidewater gauge located?
The gauge is located in Lincoln County, Oregon at coordinates 44.3860°N, 123.8318°W. USGS site number: 14306500. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey