Ito-Ogawa River System

Okuno Dam is a prefectural rockfill dam located in Ito City, Izu Peninsula, Shizuoka. It is a multi-purpose dam built to protect the city of Ito. It has many attractions, but there are also some mysterious parts, such as the flood discharge, which is rumored to be morning glory-shaped (laugh). / Rockfill dam / 63m