Yamaguchi Reservoir

Yamaguchi Reservoir extends across 72.11 square kilometers, fed by the Higashikawa and Yanasegawa rivers flowing from the Sayama Hills through Saitama Prefecture.

The construction of this water storage facility began in 1927 to address the growing water demands of the expanding urban regions near Tokyo.

The reservoir's surrounding paths host regular community gatherings that focus on environmental education and water conservation practices throughout the year.

Visitors can access multiple entry points around the reservoir perimeter, with dedicated parking areas and information centers providing guidance about activities.

The water management system incorporates specialized treatment facilities that process and distribute water to thousands of households across multiple municipalities.

Location: Tokorozawa

Location: Iruma

Inception: 1927

GPS coordinates: 35.77806,139.40861

Latest update: May 27, 2025 09:50