Yamashiro Dam

Yamashiro Dam is an earth-fill dam in Okinawa Prefecture that stores water to supply the surrounding region. The structure rises about 100 feet (30 meters) high and manages water flow for local communities in Uruma.

The dam was completed in 1961 as Japan rebuilt its infrastructure after World War 2. This project helped meet the growing water needs of the developing region.

The dam represents Japanese engineering practices through its earth-fill design, incorporating local materials and adapting to the geographical conditions of Okinawa.

You can visit the area around the dam and observe how water management works in this region. The site is accessible to visitors who want to see the structure and learn about local water systems.

The United States Geological Survey has collected water data from the Tengan Dam Spillway monitoring station since October 1967, documenting decades of hydrological patterns.

Location: Okinawa Prefecture

Location: Uruma

Height: 29.9 m

GPS coordinates: 26.40969,127.81227

Latest update: December 14, 2025 18:06