2015 Appalachian Floods and Hurricane Joaquin

Science Center Objects

Learn more about USGS flood activities related to the 2015 Appalachian Floods and Hurrican Joaquin. An upper atmospheric low-pressure system over the Southeast combined with moisture from Hurricane Joaquin off the Atlantic coast to create historic rainfall in early October, 2015, across South Carolina.

Major flooding resulted in central and coastal South Carolina where the USGS recorded peaks of record at 17 locations and sent crews out to make about 140 streamflow measurements. Flood documentation studies were initiated in cooperation with the Federal Emergency Management Agency (FEMA). The USGS also monitored the effects of moderate coastal surges from Hurricane Joaquin. Throughout the coastal areas, the storm-surge sensor deployments were coordinated with the coastal change predictions and the contaminant sampling.


USGS hydrologists measured flooding from inland systems and storm surge from Hurricane Joaquin: Crews along the Atlantic States collected high-water marks and recorded surge and wave height with storm surge sensors and rapid deployment gages. Technical specifications, data downloads, and mapping web services are available.

Carolinas Integrated Sciences and Assessments (CISA) Report: October 2015 SC Flood Event - An Integrated Assessment

An analysis by the Carolinas Integrated Sciences & Assessments (CISA) at the University of South Carolina of the climatological and hydrological conditions which contributed to this extreme event and how to consider future risks as communities recover and rebuild.

South Carolina Flood Frequency Q&A: Dr. Robert Holmes, USGS National Flood Hazard Coordinator, takes some time to discuss and answer some hot issues related to the South Carolina floods.


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