Ikari Dam

Overview

Ikari Dam is a gravity dam 112.0 meters high, built on the Ojika River in Nikko, Tochigi Prefecture. It serves flood control for the Ojika River and the Kinugawa and Tone rivers into which it flows, as well as prefecturally operated hydroelectric power. It was the first multipurpose dam completed in this river system.

Highlights

• ●A gravity concrete dam 112.0 meters high
• ●A crest length of 267 meters
• ●The first multipurpose dam completed in the Tone River system
• ●The reservoir Lake Ikari and the surrounding Nikko National Park scenery

History

Built on the Ojika River of the Tone River system, construction began in 1941. It was planned for flood control of the Ojika River and the Kinugawa and Tone rivers downstream, together with prefecturally operated hydroelectric power, and became the first multipurpose dam completed in this system.

Map

36.9031, 139.7053 · Wikidata

Suggested itinerary

1. 1View the body of the gravity concrete dam
2. 2Look out over the reservoir, Lake Ikari
3. 3Walk through the surrounding nature within Nikko National Park
4. 4Learn about the dam's role in flood control and power generation

Did you know?

💡 The artificial lake formed by the dam is named Lake Ikari and is designated as part of Nikko National Park.

Nearby spots