Sannoumi Dam

Shiwa Town

Central Iwate

The dam is located upstream of the Takinagawa River and is a scenic spot with fresh greenery in the spring and autumn leaves in the fall.With a storage capacity of approximately 38.4 million tons, it is the largest agricultural rockfill dam in Japan. In addition, it is a "parent-child dam" connected by two tunnels to the neighboring Kuzumaru Dam (water storage capacity of 5 million tons) in Ishidoriya-cho, Hanamaki City. It moistens the rice fields. Open to the public (May to November) 2nd Saturday and 3rd Wednesday 9:00-noon

Location
Tsuchidate, Shiwa Town, Shiwa District, Iwate Prefecture 028-3441
Inquiries
Sannokai Land Improvement District
Phone number 019-673-7311
FAX number 019-673-7360
Other
parking
Highlights [Mid-October to early November] Best time to see autumn leaves

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