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.

DID YOU KNOW... Please try our new TEST hydrograph page link at: https://preview.water.noaa.gov/gauges/abcde - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph.  In late March of 2024, the base URL path will become water.noaa.gov.  Feedback can be provided HERE

Weather Forecast Office Greenville-Spartanburg, SC

Southeast 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 (EST) Datum: NAVD88 Metadata

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. Reliability of the Forecast: Forecast data shown here are guidance values only. Please refer to your local NWS office. NOTE: Forecasts for the S Yadkin River below Foster Rd. 6 SW Mocksville are issued as needed during times of high water, but are not routinely available.

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Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 28 Moderate Flood Stage: 24 Flood Stage: 19 Action Stage: 18 Low Stage (in feet): 0 Historic Crests (1) 22.60 ft on 10/03/1929 (2) 21.57 ft on 02/07/2020 (3) 20.28 ft on 03/21/2003 (4) 18.88 ft on 03/02/1987 (5) 18.59 ft on 09/23/1979 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 21.57 ft on 02/07/2020 (2) 15.58 ft on 10/12/2018 (3) 12.78 ft on 09/18/2018 (4) 12.43 ft on 08/04/2018 (5) 12.88 ft on 01/19/2013 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 0.63 ft on 08/22/1988 (2) 0.76 ft on 08/15/2002 (3) 1.31 ft on 08/21/2007 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:14 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
28	Major Flood Stage.
24	Homes along the river near Cooleemee may be flooded.
21	Residential yards between the river and Potneck Road may begin to flood.
20.2	Minor flooding is expected. Flooding at this level will be similar to flooding that occurred on march 21, 2003.
20	Minor Flooding is ongoing. Floodwater levels will be similar to floodwater levels that occurred on March 21, 2003.
19	Minor Flood Stage. Further downstream on the Yadkin River, Hollywood Drive near Gubb Ferry Road north of East Spencer will likely begin to flood due to backwater on Town Creek. RV parks in the upper reaches of High Rock Lake will likely be flooded.
18	Legacy Action Stage. Yards of homes downstream of gage near Cooleemee on South River Church Road may begin to flood. Areas off of Erwin Temple Church Road may be flooded.
10	Future Action Stage. The river will overflow the banks and farmland along the river will begin to flood.
Photos (1) gage site near mocksville on South Yadkin river (2) looking upstream on South Yadkin river (3) downstream view on South Yadkin river

About This Location

Latitude: 35.845000° N, Longitude: 80.658900° 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 29 662.9 ft 682.62 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 Foster Rd. 6 SW Mocksville

Additional Information

Potential River Level (Ensemble) Hydrographs Used to Estimate the Chance of Flooding and the Range of Possible River Levels Over the Next 10 Days Hydrologic Ensemble Forecast Service (HEFS) North American Ensemble Forecast System (NAEFS) Global Ensemble Forecast System (GEFS) Note: The hydrograph at the top of the page is the official NWS forecast for this location based on 48 hours of forecasted rainfall. The ensemble hydrographs shown here are used to assess the range of possible river levels and likelihood of river flooding over the next 10 days using dozens of model-derived, 10-day rainfall forecasts. See the Product Description Document link for more information on the Meteorological Model-based Ensemble Forecasting System (MMEFS) which produces the ensemble hydrographs above. Clicking on each ensemble hydrograph enlarges the graph and takes you to the MMEFS website for additional guidance.

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Southeast River Forecast Center SERFC Ensemble River Forecasts Lower Mississippi River Forecast Center LMRFC Ensemble River Forecasts Hourly Precipitation Snow 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 Greenville-Spartanburg Weather Forecast Office 1549 GSP Drive Greer, SC 29651 (864) 848-3859 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities