Mae Klong River Basin, a region bordering with Myanmar. A 29,612-square-kilometer watershed The Basin has abundant water resources. With an average annual rainfall of about 1550 mm. This is why it is the only basin of the dam, which has two large dams on the same river basin lake. On the River Kwai Srisawat Karnchanaburi Vajiralongkorn Dam and the UK. On the River Kwai Thong Pha Phum district of Kanchanaburi The two dams are multipurpose dams to produce electricity. Flood mitigation, irrigation, water supply, and push. Water from the dam will both produce electricity and irrigation projects in the area of Mae Klong Yai. Which covers approximately 4.1 million acres of farmland.