River stage
Tidewater, Alsea River
- River level
- 1.12 ft
- Status
- Below flood stage
- 7-day change
- -0.03 ft
- Recent high
- 2.65 ft
- Recent low
- 1.07 ft
Last reported 2026-10-13 | NWS TIDO3
- 30-day change
- -0.23 ft
- Average
- 1.36 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 29.50 ft
In brief
The Alsea River at Tidewater, OR read 1.12 ft on Oct 13, 2026, 14.88 ft below action stage. That is 0.23 ft lower than 30 days earlier.
Source: National Weather Service gauge TIDO3
Water 53 °F (12 °C) · 3 °F cooler than normal for this date · -2 °F in 24 hours
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 29.50 ft | 1890-02-03 |
| 2 | 27.44 ft | 1964-12-22 |
| 3 | 25.71 ft | 1972-01-21 |
| 4 | 24.55 ft | 1974-01-16 |
| 5 | 24.04 ft | 1998-12-28 |
| 6 | 24.02 ft | 1960-11-04 |
| 7 | 23.92 ft | 1980-12-26 |
| 8 | 23.88 ft | 1996-02-07 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 18.00 ft
expect minor flooding of low-lying pasture land, roads, and a few structures close to the river. The flow
- 20.00 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.
- 21.00 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.
- 21.50 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).
- 23.00 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).
- 24.00 ft
expect flooding of numerous homes in the Little Albany area along with widespread flooding of numerous roads and structures along the river.
- 25.50 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).
- 27.20 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).
- 28.50 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).
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Alsea River flooding at Tidewater?
No. The Alsea River at Tidewater is at 1.12 ft, 14.88 ft below action stage.
What is the flood stage at Tidewater?
The National Weather Service sets action stage 16 ft, minor flooding 18 ft, moderate flooding 21 ft and major flooding 23 ft.
What is the highest the Alsea River has been at Tidewater?
The highest crest on record is 29.5 ft, on 1890-02-03.
Is the Alsea River high or low right now at Tidewater?
At 1.12 ft it is higher than 9% of readings over the last 122 days.
How warm is the water at Tidewater, Alsea River?
The water temperature at Tidewater, Alsea River is 53 °F (11.8 °C), measured 7:00 pm by USGS, which is 3 °F cooler than normal for this date over the past ten years. It has fallen 2.4 °F in the last 24 hours.
Stage and flood information from the NOAA National Weather Service (gauge TIDO3); daily history from the U.S. Geological Survey (site 14306500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.