Hwanggang Dam
Hwanggang Dam is a hydroelectric dam on the Imjin River in Tosan County, North Korea. Located approximately north of the Korean Demilitarized Zone, the dam has an estimated capacity of. Construction began in 2002 and was completed in 2007. The stated aims of the project are to generate hydropower and provide water for crop irrigation.
However it is also widely thought that the dam is to protect against the perceived North Korea / South Korea threat. South Korea also built two of its own dams in the area in the early 2010s.