FLOOD CHARACTERISTICS OF DAMS RELATED TO IMPLEMENTING OF DOWNSTREAM SEDIMENT REPLENISHMENT

Abstract

 Downstream sediment replenishment has been implemented in some dams. It is important from the viewpoint of continuity of sediment transport, and is also considered to be an effective method to solve the problem of sediment disposal in dams. However, the amount of replenishment is greatly affected by the flood characteristics of each dam, which is an external force.

 In this study, we focused on the discharge data of dams as one of the basic studies on the implementation of downstream sediment replenishment, and compared the flood characteristics of dams that have already taken the sediment disposal measures in this way with those of dams nationwide based on the daily average discharge data. Flood characteristics (number of floods and flood duration) of the dams implementing downstream sediment replenishment were also studied using hourly discharge data.