Columbia River at St. Helens
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
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Observed (OBS) 04/01/2025 4:36 PM PDTOfficial Forecast (FCST) 04/01/2025 4:19 PM PDTRecord: 27.1 ftCATEGORY STAGE 
Major Flooding 21 ft Moderate Flooding 18 ft Minor Flooding 15.5 ft Action 14.5 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
- 23 - expect major flooding, especially near Kalama Washington. This river level historically nears the tops of several levees along the Columbia and Lewis Rivers.
- 21 - expect major flooding near St. Helens Oregon and Kalama Washington, along with widespread flooding of lowland agricultural areas.
- 19 - expect widespread lowland flooding. Levee watches have historically been in effect at this and higher stages for Bachelor Island and locations near Lewis River confluence.
Gauge Info
| Coordinates | 45.8636, -122.796 |
| RFC | NWRFC |
| State | OR |
| WFO | PQR |
| County | Columbia |
| Data Provider(s) | |
| NOAA National Ocean Service | NOAA National Ocean Service |
Gauge Location
Recent Crests
| 1. | 15.80 ft | on 03-30-2017 |
| 2. | 23.00 ft | on 02-10-1996 |
| 3. | 19.78 ft | on 01-03-1996 |
| 4. | 17.80 ft | on 06-23-1967 |
| 5. | 19.60 ft | on 01-31-1965 |
Recent Crests
| 1. | 15.80 ft | on 03-30-2017 |
| 2. | 23.00 ft | on 02-10-1996 |
| 3. | 19.78 ft | on 01-03-1996 |
| 4. | 17.80 ft | on 06-23-1967 |
| 5. | 19.60 ft | on 01-31-1965 |
| 6. | 24.00 ft | on 12-25-1964 |
| 7. | 20.10 ft | on 06-10-1961 |
| 8. | 17.40 ft | on 06-01-1958 |
| 9. | 19.80 ft | on 05-23-1957 |
| 10. | 23.20 ft | on 06-05-1956 |
| 11. | 17.80 ft | on 12-25-1955 |
| 12. | 17.10 ft | on 06-19-1954 |
| 13. | 18.40 ft | on 06-16-1953 |
| 14. | 21.60 ft | on 06-27-1950 |
| 15. | 19.20 ft | on 05-19-1949 |
| 16. | 27.10 ft | on 06-14-1948 |
| 17. | 18.10 ft | on 06-01-1946 |
Historic Crests
| 1. | 27.10 ft | on 06-14-1948 |
| 2. | 24.00 ft | on 12-25-1964 |
| 3. | 23.20 ft | on 06-05-1956 |
| 4. | 23.00 ft | on 02-10-1996 |
| 5. | 21.60 ft | on 06-27-1950 |
Historic Crests
| 1. | 27.10 ft | on 06-14-1948 |
| 2. | 24.00 ft | on 12-25-1964 |
| 3. | 23.20 ft | on 06-05-1956 |
| 4. | 23.00 ft | on 02-10-1996 |
| 5. | 21.60 ft | on 06-27-1950 |
| 6. | 20.10 ft | on 06-10-1961 |
| 7. | 19.80 ft | on 05-23-1957 |
| 8. | 19.78 ft | on 01-03-1996 |
| 9. | 19.60 ft | on 01-31-1965 |
| 10. | 19.20 ft | on 05-19-1949 |
| 11. | 18.40 ft | on 06-16-1953 |
| 12. | 18.10 ft | on 06-01-1946 |
| 13. | 17.80 ft | on 06-23-1967 |
| 14. | 17.80 ft | on 12-25-1955 |
| 15. | 17.40 ft | on 06-01-1958 |
| 16. | 17.10 ft | on 06-19-1954 |
| 17. | 15.80 ft | on 03-30-2017 |
Vertical Datum Table
| type | NGVD29 |
|---|---|
| major Flooding | 21.89 ft |
| moderate Flooding | 18.89 ft |
| minor Flooding | 16.39 ft |
| action | 15.39 ft |
| Latest Value | 8.97 ft |
| Gauge Zero | 0.89 ft |
Probability Information
No Images Available
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