Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Portland, OR

Northwest River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (PST) Datum: NAVD88 Metadata

NOTE: Forecasts for the South Yamhill River at McMinnville are issued routinely year-round.

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Upstream Gauge

Flood Categories (in feet) Major Flood Stage: 59 Moderate Flood Stage: 56 Flood Stage: 50 Action Stage: 45 Low Stage (in feet): -9999 Historic Crests (1) 59.33 ft on 02/09/1996 (2) 55.90 ft on 12/05/2007 (3) 55.18 ft on 12/30/1996 (4) 55.01 ft on 12/29/1998 (5) 53.97 ft on 01/20/2012 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 51.84 ft on 11/26/2016 (2) 51.97 ft on 12/10/2015 (3) 53.97 ft on 01/20/2012 (4) 52.92 ft on 01/03/2009 (5) 55.90 ft on 12/05/2007 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 8.50 ft on 08/19/2023 (2) 9.90 ft on 08/30/2016 For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:16 Legend FEMA Layer Gauge Location Disclaimer Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

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58	expect flooding of some buildings and structures in the south portions of McMinnville, along with widespread farmland flooding and numerous flooded roads along the South Yamhill near McMinnville and downstream to the confluence with the Willamette River.
56	expect flooding of some structures in the south part of McMinnville. Historically, Numerous roads are flooded and closed at this level.
54	numerous secondary and minor access roads begin to flood. Road closures are possible at a few locations.
52	expect extensive lowland flooding from 10 miles south of McMinnville to the confluence of the Yamhill and Willamette Rivers.
50	expect lowland flooding at several locations along the river from McMinnville to the confluence with the Willamette River.
Photos (1) USGS gage house (2) Upstream view (3) Downstream view

About This Location

Latitude: 45.206944° N, Longitude: 123.181667° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 50 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 89 139 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for McMinnville

Additional Information

10-day Forecast/Trend, Northwest River Forecast Center

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Text Table Temp & Precip Forecasts 3-Day Detailed Precip Forecast 10-Day Temp & Precip Outlook Lewis Dams - USGS data (scroll down to Lewis basin) 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

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Data NRCS SNOTEL data map interface USACE Portland District Reservoirs USBR PacNW Reservoirs Oregon Drought Information National Drought Information

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. NWS Information National Weather Service Portland Weather Forecast Office 5241 NE 122nd Avenue Portland, OR 97230-1089 (503) 261-9246 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:27 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities