Tualatin River at Farmington
No watches, warnings or advisories are in effect for this area.
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/17/2025 3:30 AM PDTOfficial Forecast (FCST) 06/16/2025 8:28 AM PDTRecord: 37.2 ftCATEGORY STAGE 
Major Flooding 36 ft Moderate Flooding 34 ft Minor Flooding 32 ft Action 28 ft Reliability of the Forecast:
NOTE: Forecasts are issued routinely year-round.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 37 - 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 - 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 - 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.
Gauge Info
| Coordinates | 45.4494, -122.950 |
| RFC | NWRFC |
| State | OR |
| WFO | PQR |
| County | Washington |
| Data Provider(s) | |
| Oregon Water Resources Dept | Oregon Water Resources Department |
| USGS | 14206500 |
Gauge Location
Recent Crests
| 1. | 32.80 ft | on 12-19-2015 |
| 2. | 34.02 ft | on 12-11-2015 |
| 3. | 32.60 ft | on 12-06-2007 |
| 4. | 33.63 ft | on 01-12-2006 |
| 5. | 32.86 ft | on 01-01-2006 |
Recent Crests
| 1. | 32.80 ft | on 12-19-2015 |
| 2. | 34.02 ft | on 12-11-2015 |
| 3. | 32.60 ft | on 12-06-2007 |
| 4. | 33.63 ft | on 01-12-2006 |
| 5. | 32.86 ft | on 01-01-2006 |
| 6. | 34.81 ft | on 01-01-1997 |
| 7. | 37.20 ft | on 02-09-1996 |
| 8. | 33.20 ft | on 12-15-1995 |
| 9. | 34.00 ft | on 12-17-1977 |
| 10. | 35.13 ft | on 01-17-1974 |
| 11. | 33.30 ft | on 01-24-1970 |
| 12. | 32.60 ft | on 01-30-1965 |
| 13. | 34.40 ft | on 12-24-1964 |
| 14. | 34.40 ft | on 01-27-1964 |
| 15. | 33.20 ft | on 01-21-1964 |
| 16. | 33.10 ft | on 01-12-1959 |
| 17. | 34.40 ft | on 01-05-1956 |
| 18. | 36.03 ft | on 12-22-1955 |
| 19. | 33.30 ft | on 02-15-1954 |
| 20. | 33.30 ft | on 01-21-1953 |
| 21. | 33.40 ft | on 12-06-1951 |
| 22. | 33.00 ft | on 01-23-1951 |
| 23. | 33.50 ft | on 02-26-1950 |
| 24. | 34.50 ft | on 02-18-1949 |
| 25. | 33.04 ft | on 04-02-1943 |
| 26. | 32.89 ft | on 04-02-1942 |
| 27. | 33.50 ft | on 12-21-1941 |
| 28. | 37.00 ft | on 12-22-1933 |
Historic Crests
| 1. | 37.20 ft | on 02-09-1996 |
| 2. | 37.00 ft | on 12-22-1933 |
| 3. | 36.03 ft | on 12-22-1955 |
| 4. | 35.13 ft | on 01-17-1974 |
| 5. | 34.81 ft | on 01-01-1997 |
Historic Crests
| 1. | 37.20 ft | on 02-09-1996 |
| 2. | 37.00 ft | on 12-22-1933 |
| 3. | 36.03 ft | on 12-22-1955 |
| 4. | 35.13 ft | on 01-17-1974 |
| 5. | 34.81 ft | on 01-01-1997 |
| 6. | 34.50 ft | on 02-18-1949 |
| 7. | 34.40 ft | on 01-27-1964 |
| 8. | 34.40 ft | on 12-24-1964 |
| 9. | 34.40 ft | on 01-05-1956 |
| 10. | 34.02 ft | on 12-11-2015 |
| 11. | 34.00 ft | on 12-17-1977 |
| 12. | 33.63 ft | on 01-12-2006 |
| 13. | 33.50 ft | on 12-21-1941 |
| 14. | 33.50 ft | on 02-26-1950 |
| 15. | 33.40 ft | on 12-06-1951 |
| 16. | 33.30 ft | on 02-15-1954 |
| 17. | 33.30 ft | on 01-24-1970 |
| 18. | 33.30 ft | on 01-21-1953 |
| 19. | 33.20 ft | on 12-15-1995 |
| 20. | 33.20 ft | on 01-21-1964 |
| 21. | 33.10 ft | on 01-12-1959 |
| 22. | 33.04 ft | on 04-02-1943 |
| 23. | 33.00 ft | on 01-23-1951 |
| 24. | 32.89 ft | on 04-02-1942 |
| 25. | 32.86 ft | on 01-01-2006 |
| 26. | 32.80 ft | on 12-19-2015 |
| 27. | 32.60 ft | on 12-06-2007 |
| 28. | 32.60 ft | on 01-30-1965 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 156.00 ft |
| moderate Flooding | 154.00 ft |
| minor Flooding | 152.00 ft |
| action | 148.00 ft |
| Latest Value | 124.40 ft |
| Gauge Zero | 120.00 ft |
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
Resources
Hydrologic Resource Links
- River Forecast Centers
- Text Products
- Past Precipitation
- Forecast Precipitation
- Text Table Temp & Precip Forecasts
- 3-Day Detailed Precip Forecast
- 10-Day Temp & Precip Outlook
- Lewis Dams - USGS data (scroll down to Lewis basin)
- Lewis Reservoirs Summary
- Lower Columbia Reservoir and River conditions
- USACE DataQuery
- USGS WaterWatch Oregon
- USGS WaterWatch Washington
- USGS River Temperatures & Water Quality Oregon
- USGS River Temperatures & Water Quality Washington
- Oregon Water Resources Dept - Surface Water Data
- USGS Oregon river levels
- USGS Washington river levels