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 March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Medford, OR

Northwest River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Not Available Chance of Exceeding Levels During Entire Period Not Available Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (PDT) Datum: Not Available Metadata

NOTE: Gauge readings unavailable - awaiting repair. NOTE: Forecasts for the South Umpqua River near Riddle are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 24 Moderate Flood Stage: 21 Flood Stage: 19 Action Stage: 18 Low Stage (in feet): 0 Historic Crests (1) 20.32 ft on 12/30/2005 (2) 20.09 ft on 12/09/1996 (3) 19.81 ft on 01/01/1997 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 14.02 ft on 11/20/2012 (2) 20.32 ft on 12/30/2005 (3) 19.81 ft on 01/01/1997 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available.

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

If you notice any errors in the below information, please contact our Webmaster
20.32	Record stage since installation of gage. Widespread flooding of low-lying agricultural land is occurring. Some structures along and near the river are flooded.
20	Widespread flooding of low-lying agricultural land and some structures is occurring along the South Umpqua River in the vicinity of Riddle.
19	The South Umpqua River near Riddle is at flood stage. Widespread flooding of low-lying agricultural land and structures along the river is occurring.
18	The South Umpqua River near Riddle is at bankfull stage. Some flooding of low land is taking place.

About This Location

Latitude: 42.951944° N, Longitude: 123.334722° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 19 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 622.334 ft 641.334 ft 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 Riddle

Additional Information

This gauge is awaiting repair. Funding is not available and will not be for the foreseeable future.

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Northwest River Forecast Center California Nevada River Forecast Center Snow values Interactive Map Mean daily surface air temperature Cumulative thawing degree days Reservoir summary for Oregon (nrcs) Reservoir summary for California (nrcs) Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information FloodSmart.gov FEMA National Flood Insurance Program

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 Medford Weather Forecast Office 4003 Cirrus Drive Medford, OR 97504-4198 (541) 776-4303 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:27 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities