SCDES's role with hurricanes, floods and weather emergencies | South Carolina Department of Environmental Services

SCDES’s role with hurricanes, floods and weather emergencies

When hurricanes, floods, or other weather emergencies threaten our state, SCDES takes actions within the scope of its authority that help protect people, property and the environment.

While the South Carolina Emergency Management Division (SCEMD) is the primary coordinating agency in the state during a weather emergency, SCDES and other state agencies perform critical roles that help protect our residents and help our state recover from hurricanes and other disasters as quickly as possible. SCDES assists with pre-storm evacuation support, dam monitoring, post-storm damage assessments and clean-up. In addition, SCDES is part of the South Carolina Emergency Operations Center before, during, and after emergencies, supporting a comprehensive emergency response.

Dams and Reservoirs

SCDES is responsible for overseeing inspections and compliance for nearly 2,300 state-regulated dams through the Dams and Reservoirs Safety Program. Regulated dams are classified as one of three hazard potentials: High-hazard (C1), Significant-hazard (C2) or Low-hazard (C3). You can learn more about these classifications here.

When a hurricane or heavy rain event is predicted:

SCDES may issue a notification to dam owners to lower their water levels. Doing so helps prevent flooding or dam breaches when the hurricane or heavy rain arrive.
SCDES dam inspectors may perform priority assessments of dams that are anticipated to be affected by severe weather to help make sure spillways aren’t blocked by debris and other visible concerns are quickly addressed.
After a hurricane or severe weather event, SCDES dam inspectors will perform dam assessments of impacted dams or reservoirs and provide guidance to dam owners who may need to repair sustained damage in order to bring the dam back into compliance and ensure the safety of those downstream from the dam.

Drinking Water and Private Wells

In areas where flooding is anticipated, SCDES will work with public water systems to ensure they have appropriate measures in place that protect drinking water and prevent any disruption in water service. SCDES also will work with water systems to ensure they issue boil water advisories when needed.

Additionally, for areas impacted by floodwaters, SCDES can help private well owners make sure their well water is safe by opening the agency’s private well hotline that provides information and resources. SCDES also can waive bacteriological testing fees for private wells impacted by flooding.

Additional pre- and post-storm activities

Several other SCDES program areas perform additional essential duties, including:

Responding to hazardous materials emergencies.
Providing technical support to water and sewer facilities.
Assisting with solid and hazardous waste disposal and debris disposal at landfills.
Monitoring water quality and issuing shellfish temporary closures for harvesting areas impacted by polluted floodwaters.
Creating flood inundation maps and other GIS tools that can assist with recovery efforts.
Working with SCDES-permitted agriculture facilities to reduce floodwater impacts to lagoons.
Performing post-storm coastal damage assessments by aerial surveillance.
Issuing emergency orders for coastal counties that allow for sandbagging and marine debris removal.

SCDES works in close coordination with SCEMD, the Governor’s Office and other state agencies and organizations to make sure residents have the information they need to protect themselves and their property during weather disasters.