Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

Hydrograph River at a Glance Download
South Yamhill River at McMinnville Stage (ft)Flow (cfs)Highest Forecast: 14.25 ft 5:00PM Apr 12, 2021Forecast: 14.21 ft 11:00PM Apr 12, 2021Forecast: 14.18 ft 5:00AM Apr 13, 2021Forecast: 14.14 ft 11:00AM Apr 13, 2021Forecast: 14.11 ft 5:00PM Apr 13, 2021Forecast: 14.08 ft 11:00PM Apr 13, 2021Forecast: 14.05 ft 5:00AM Apr 14, 2021Forecast: 14.02 ft 11:00AM Apr 14, 2021Forecast: 13.99 ft 5:00PM Apr 14, 2021Forecast: 13.96 ft 11:00PM Apr 14, 2021Forecast: 13.93 ft 5:00AM Apr 15, 2021Forecast: 13.91 ft 11:00AM Apr 15, 2021Forecast: 13.88 ft 5:00PM Apr 15, 2021Forecast: 13.85 ft 11:00PM Apr 15, 2021Forecast: 13.83 ft 5:00AM Apr 16, 2021Forecast: 13.8 ft 11:00AM Apr 16, 2021Forecast: 13.78 ft 5:00PM Apr 16, 2021Forecast: 13.75 ft 11:00PM Apr 16, 2021Forecast: 13.73 ft 5:00AM Apr 17, 2021Forecast: 13.7 ft 11:00AM Apr 17, 2021USGS--Water Resources of the United StatesMCMO3(plotting HGIRG) Graph Created (11:33AM Apr 12, 2021)Forecast (issued 8:11AM Apr 12)Flood Stage is 50 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: NGVD29
NOTE: Forecasts for the South Yamhill River at McMinnville are issued routinely year-round.
Return to Area Map
Upstream Gauge - near Willamina Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 59
Moderate Flood Stage: 56
Flood Stage: 50
Action Stage: 45
Low Stage (in feet): 0

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
Currently none available.

For more information on your flood risk go to

Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
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.
(1) USGS gage house
(2) Upstream view
(3) Downstream view
About This Location Collapse

Latitude: 45.205556° N, Longitude: 123.182500° 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)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 50 100 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:

Additional Information Collapse
Archived/Historical Data at USACE DataQuery
10-day Forecast/Trend, Northwest River Forecast Center
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Privacy Policy
About Us
Career Opportunities