Assessments were conducted on three dams in South Carolina—Broadmouth Creek #8, Big Garvin Creek #9B, and Brushy Creek #17—to provide local sponsors and the Natural Resources Conservation Service (NRCS) with essential data regarding their condition. The evaluations determined whether the dams met NRCS and South Carolina Department of Health and Environmental Control design, performance, and dam safety standards, identified potential risks to the public in the event of failure, outlined rehabilitation alternatives, and estimated associated costs.

Kenall played a vital role in executing the scope of work, which included surveying, hydraulic and hydrologic modeling, and engineering services necessary for the design, operation, and maintenance of floodwater retarding structures. As part of the assessment process, the team conducted site visits and performed visual evaluations of the dams and their associated appurtenances. These evaluations examined the principal spillway pipe, riser, and outlet, assessed the foundation drainage system, and analyzed the embankment and auxiliary spillway to determine overall structural integrity.

Current watershed delineations were compared to the original delineations to verify any significant differences that could impact the dams’ functionality. LiDAR data and bathymetric surveys were used to develop updated structure capacity tables to reflect present conditions. A hazard classification analysis was performed to assess the downstream area for potential risks and confirm each dam’s classification aligned with regulatory standards.

Through these comprehensive assessments, Kenall provided valuable insights that informed decision-making regarding dam rehabilitation and safety improvements.