Water Resources of the United States

PROJECT ALERT NOTICE (GA) Remnants of Hurricane Delta drop heavy rain in Metropolitan Atlanta and Northeast Georgia

Date: Sun, 11 Oct 2020 11:15:38 EDT

Summary: The remnants of Hurricane Delta moved through North Georgia, dropping between 4-8 inches of rain through the Metropolitan Atlanta region and Northeast Georgia mountains.

Heavy rains of between 7-8 inches total from the remnants of Hurricane Delta over the last 36 hours have caused historic flooding in the Upper Chattahoochee Basin in Northeast Georgia. Urban flooding in the Metropolitan Atlanta area of 3-6 inches of rain overnight caused significant flash flooding and quickly rising tributaries that have pushed the Chattahoochee River at Atlanta to the NWS Major Flood Stage. One USGS streamgage 02336300 Peachtree Creek at Atlanta, which was moved temporarily due to bridge construction, was damaged during the storm. Other USGS gages have suffered some minor damage as well. News reports are saying a large train derailment involving potentially hazardous materials occurred overnight near Lilburn, Georgia because the tracks were washed out due to flooding. Significant tree damage and power outages have also occurred. (link: https://www.wsbtv.com/news/breaking-news/breaking-residents-evacuated-overnight-lilburn-after-train-derailment/73GW47NKQFF3TEPTWZ3DFUENAA/)

A USGS two-person crew is deployed to measure at 02331600 Chattahoochee River near Cornelia, GA and 023312495 Soque River at GA 197, near Clarkesville, GA. Another two-person crew is being deployed to measure the high flows at 02335880 Chattahoochee River at Powers Ferry and I-285 near Atlanta, GA and 02336000 Chattahoochee River at Atlanta, GA. Another seven persons are collecting storm samples at more than a dozen urban hydrology gage locations and investigating needed gage repairs. A total of 11 USGS personnel will be responding to the event in the field today, with two others supporting.

Table of Real-time Streamflow Conditions in Georgia
Map of Real-time Streamflow Conditions in Georgia

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