Elkin Raw Water Line, Big Elkin Creek Bank Stabilization, Town of Elkin, NC

Project consisted of improvements to approximately 3,690 LF of 12-inch ductile iron emergency raw water line that is being extended from the Town of Elkin WTP to their raw water reservoir. Improvements will also be made to the existing raw water intake pump station. Approximately 100 LF of the existing 24-inch raw water line was exposed and threatened as a result of stream bank erosion of Big Elkin Creek. The project design utilizes natural channel design practices including root wads, rock toes and j-hooks to re-establish the channel banks to protect the raw water line and to direct the stream energy away from the banks. In addition, a tributary confluence is being relocated to prevent further erosion. Design challenges include achieving a no-rise condition despite altering the channel cross-section.