Amahata Dam

Overview

Amahata Dam is a power-generation dam in Hayakawa, Minamikoma District, Yamanashi Prefecture, built on the Amahata River, a tributary of the Hayakawa in the Fuji River system. It is an arch dam standing 80.5 meters high with a crest length of 147.6 meters, completed in 1967. Holding back water deep in a valley of the Southern Alps, it forms part of the quiet mountain scenery typical of Hayakawa. When visiting, check official information for accessible areas and whether tours are available.

Highlights

• ●An arch power-generation dam 80.5 meters high with a 147.6-meter crest
• ●Completed in 1967, reflecting postwar power development in the mountains
• ●Built on the Amahata River, a tributary of the Hayakawa in the Fuji River system
• ●Quiet scenery holding water deep in a valley of the Southern Alps

History

Amahata Dam is a power-generation arch dam completed in 1967. Built on the Amahata River, a tributary of the Hayakawa in the Fuji River system, it has the clean form typical of an arch dam, 80.5 meters high with a crest length of 147.6 meters. As part of postwar power development, it harnessed a mountain water resource and today reflects the industrial history at the foot of the Southern Alps. For details of its operation and background, please refer to official sources.

Map

35.4086, 138.3317 · Wikidata

Suggested itinerary

1. 1Enter Hayakawa from along the Fuji River and head upstream toward Amahata
2. 2Follow the mountain road along the Amahata River toward the dam area
3. 3View the arch dam and reservoir from the accessible areas
4. 4Take in the mountain nature and village atmosphere of Hayakawa on the way back

Did you know?

💡 Amahata Dam is a power-generation arch dam, a design that transfers water pressure into the rock on both banks. Its relatively compact form, 80.5 meters high against a crest length of 147.6 meters, illustrates well how arch dams are built into deep valleys. The dam takes its name from the Amahata River on which it stands.

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