SCDOT and National Guard deploy an AquaDam on U.S. 17 in Georgetown on Sept. 25, 2018. Water levels on the Waccamaw River continue to rise, potentially flooding U.S. 17 and cutting off access to coastal areas. (Photos by Cody Crouch/SCDOT)

SCDOT and National Guard deploy an AquaDam on U.S. 17 in Georgetown on Sept. 25, 2018. Water levels on the Waccamaw River continue to rise, potentially flooding U.S. 17 and cutting off access to coastal areas. (Photos by Cody Crouch/SCDOT)

SCDOT and National Guard deploy an AquaDam on U.S. 17 in Georgetown on Sept. 25, 2018. Water levels on the Waccamaw River continue to rise, potentially flooding U.S. 17 and cutting off access to coastal areas. (Photos by Cody Crouch/SCDOT)

Army National Guard Specialist Bennie Cumbee from Andrews, SC, is monitoring the water pumps being used for the AquaDam on U.S. 17 in Georgetown on Sept. 25, 2018. The water pumps are connected to overflow from the Waccamaw River. (Photos by Cody Crouch/SCDOT)