Santee Cooper Will Begin Controlled Spilling at Santee Dam

MONCKS CORNER, S.C. – Heavy rainfall in the Santee Cooper watershed, combined with upstream lake operations, has increased inflows into the Santee Cooper Lakes system. To manage lake levels and remain within the limits of our FERC operating license, Santee Cooper will begin controlled spilling operations at the Santee Dam on Lake Marion.

Santee Cooper anticipates that it will begin spill operations on Saturday, Aug. 16, 2025, at a flow rate of approximately 10,000 cubic feet per second (CFS) into the Santee River and will continue until further notice.

Santee Cooper’s dams and dikes remain secure. Controlled spilling is a normal part of Santee Cooper’s hydroelectric operations during periods of increased inflows. System Operations will continue to monitor rainfall projections and inflows and will provide updates as conditions change.

For the latest information, please visit www.santeecooper.com/lakes or call the lakes information line at 1-800-92LAKES.

For more than 90 years, Santee Cooper has been serving the people of South Carolina. The utility is South Carolina’s largest power provider and the ultimate source of electricity for 2 million people across the state. Through its affordable, reliable and environmentally responsible electricity and water services, and through innovative partnerships and initiatives that attract and retain industry and jobs, Santee Cooper helps power South Carolina. To learn more, visit www.santeecooper.com and follow #PoweringSC on social media.

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