Major Flood
36 ft
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
34 ft
Minor Flood
32 ft
Action Stage
28 ft
What Floods at Each Level
37 ft
expect widespread flooding of homes and roads in and around Farmington, Tualatin, and West Linn. Historically, numerous homes in Tualatin along and near the river have flooded at this level. The Oswego Canal inlet gate will likely be overtopped.
36 ft
expect major flooding of numerous homes and roads from Farmington downstream to Tualatin. Historically, evacuations in several areas including Farmington, Tualatin, and Rivergrove have taken place when the river reached this stage. The Oswego Canal inlet gate is in danger of being overtopped.
35 ft
expect widespread flooding of lowland areas. Flooding of numerous residential areas in and around Farmington, Tualatin, and Rivergrove just east of I-5 begins at this level. Also expect flooding of numerous roads and subsequent road closures in these areas.
34 ft
expect inundation of large areas along the Tualatin from Farmington downstream to the City of Tualatin. The main flood impact is to low-lying pastures and farmland along the river, but lower elevations of some secondary roads between Farmington and Tualatin may be flooded, and some structures in the city of Tualatin may be threatened by flood water.
32 ft
expect flooding of numerous fields and low-lying farms, along with flooding of a few secondary roads in and around Farmington and Tualatin. Some farmland near the river channel will be inundated.
28 ft
the river is at bankfull level. Above this level, some inundation of low areas and farmland along the river channel will occur.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Feb 8, 1996 | 37.2 ft | — |
| Dec 21, 1933 | 37 ft | — |
| Dec 21, 1955 | 36.03 ft | — |
About This Gauge
USGS Site
NWS LID
FRMO3
River
Tualatin River
County
Washington, OR
Coordinates
45.4494°N, 122.9503°W
Get Flood Alerts for Tualatin 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 Tualatin River at Farmington?
The Tualatin River at Farmington gauge is maintained by USGS (site 14206500) 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 Tualatin River at Farmington?
The NWS-defined flood stage for Tualatin River at Farmington is 32 feet. Action stage begins at 28 feet. Moderate flooding starts at 34 feet, and major flooding at 36 feet.
How do I get alerts when Tualatin River rises?
Download StormCast free on Google Play, go to River Gauges, and add Tualatin River at Farmington 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 Tualatin River at Farmington gauge located?
The gauge is located in Washington County, Oregon at coordinates 45.4494°N, 122.9503°W. USGS site number: 14206500. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Tualatin River
On This River
More Resources
Source & Notes
Data provided by: Oregon Water Resources Dept, Observations courtesy of U.S. Geological Survey