The photograph on the top page shows the valley which will be the waterfront. In between the mountains on the left side, there will be made a huge wall to stop the water. The roads runs along the valley is the landmark of how high the water comes up.

"Kawabegawa" is not very much known as a rever. It is the river which flows in to Kumagawa, which is famous for its Kuma-Shochu. Because of the political action made by the local people, the Ministry of the Construction has not been able to persue the plan which is made more than 30 years ago. They aims to finish construction in 2008. The construction model is concrete-made arche. The height of the dam is 107.5 meters (one third of the Tokyo Tower). The purpose of the project is;