[1][2] 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.

[3] It is being implemented by Korea Water Resources Corporation (K-water).

[3][4] This project also had a road project for the purpose of relocation of existing roads in Pocheon and Cheorwon areas that are submerged by the Hantangang Dam’s new flood water level.

It has four spillways; a service, emergency, lower sediment discharge and eco-corridor.

In episode 2 of Military Prosecutor Doberman, the Hantangang Dam can be seen in the background during a scene taking place on a bridge over the Hantan River.