Hantangang Dam


The Hantangang Dam is a gravity dam on the Hantan River in Yeoncheon County, Gyeonggi Province, South Korea. Construction on the dam began in 2007 and completed in 2015. The primary purpose of the dam is flood control : it was proposed in 1998 after a series of floods in the late 1990s that killed 128 people, displaced over 31,000 and caused about US$900 million in property damage. Initially designed as a multi-purpose project, the design was changed solely to flood control in 2006 due to the concerns of residents upstream. It is being implemented by Korea Water Resources Corporation.

Construction

Construction started in February 2007 and completed in mid-2015. K-water is responsible for planning and supervision. Daelim is undertaking the construction as a leading contractor. Not only to secure the stability against overflow during the flood season but also to reduce the construction cost through the mechanized construction fitting for the mega construction, the roller-compacted concrete method has been applied. About 300 families will be displaced when the reservoir is filled.

Design

The Hantangang Dam will be a and long gravity dam constructed of roller-compacted concrete. It has four spillways; a service, emergency, lower sediment discharge and eco-corridor. All four together will have a maximum discharge of. The water storage capacity for the reservoir is.