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Weather Forecast Office Peachtree City/Atlanta, GA

Southeast River Forecast Center

Hydrograph

River at a Glance

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Printable Image About this graph Tabular Data (UTC) Tabular Data (AST) Datum: NGVD29 Metadata

NOTE: Automated gauge readings are now available, courtesy of the USGS. NOTE: Forecasts are not available for the Hannahatchee Creek at Union Road at Union. Only observed stages are available for this point.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Flood Categories (in feet) Major Flood Stage: 26 Moderate Flood Stage: 21 Flood Stage: 16 Action Stage: 14 Low Stage (in feet): -9999 Historic Crests (1) 15.47 ft on 12/25/2015 (2) 13.41 ft on 12/11/2008 (3) 12.56 ft on 12/15/2009 (P): Preliminary values subject to further review. Recent Crests (1) 15.47 ft on 12/25/2015 (2) 12.56 ft on 12/15/2009 (3) 13.41 ft on 12/11/2008 (P): Preliminary values subject to further review. Low Water Records Currently none available. 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
26	Major flooding begins. Widespread inundation flooding expands further into the woodlands and fields upstream and downstream from the gage on Union Road. The water is close to topping the bridge as it acts like a dam. Erosion may occur to the sides of the bridge and county officials will likely have it closed. The flood waters will be from 1 to 3 feet deep over the road.
23	Significant flooding continues to expand further into the woodlands and fields upstream and downstream from the gage on Union Road. The water level hits the bridge causing it to act like a dam. Erosion may occur to the sides of the bridge and county officials will likely have it closed. The flood waters will begin to flow over the road just north of the bridge.
21	Moderate flooding begins. Significant flooding expands further into the woodlands and fields upstream and downstream from the gage on Union Road. The water level reaches the bottom of the bridge and county officials may close the bridge.
20	Minor flooding expands further into the woodlands and fields upstream and downstream from the gage on Union Road.
18	Minor flooding continues in the woodlands and fields upstream and downstream from the gage on Union Road.
16	Flood stage is reached. Minor flooding of woodlands and fields begin upstream and downstream from the gage on Union Road.
14	Bankfull conditions are reached upstream and downstream from the gage on Union Road. The marsh land surrounding the creek begins to flood.

About This Location

Latitude: 32.152778° N, Longitude: 84.905833° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 16 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 29 220 ft 236 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 Union Road at Union

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations Spring Flood Outlook USGS Georgia

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management WFO FFC Additional Links Google Earth Gage Locations 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 Peachtree City/Atlanta Weather Forecast Office 4 Falcon Drive Peachtree City, GA 30269 (770) 486-1133 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities