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Naganuma Dam
Naganuma Dam under construction in 2007
Location of Naganuma Dam in Miyagi PrefectureShow map of Miyagi PrefectureNaganuma Dam (Japan)Show map of Japan
Location	Tome, Miyagi, Japan
Coordinates	38°42′34.8″N 141°08′58″E / 38.709667°N 141.14944°E / 38.709667; 141.14944
Construction began	1975
Opening date	2014
Owner(s)	Miyagi Prefecture
Dam and spillways
Type of dam	Earthfill dam
Impounds	Hasama River
Height	15.3 meters
Length	1050 meters
Reservoir
Total capacity	31,800,000 m
Catchment area	570 m
Surface area	610 hectares

Naganuma Dam (Japanese: 長沼ダム) is a dam in the city of Tome, Miyagi, Japan, completed in May 2014. The dam is located on the Hasama River, a branch of the Kitakami River system.

The dam was built by the government of Miyagi Prefecture. It is an earthen dam, with height of 15.3 meters, and three lock gates on its left bank. The dam utilises the bacon of a pre-existing natural lake, and is unusual in that it is intended to store flood waters from a reverse flow of the Kitakami Rover during typhoons and heavy rains. The dam is intended as a multi-purpose dam, for agricultural water, flood control and for recreational purposes. The dam is one of several planned after the Kitakami River valley suffered from extensive flooding after typhoons in 1947 and 1948. Although preliminary construction began in 1975, completion was considerably delayed due to strenuous opposition by local residents opposed to relocation and due to environmental concerns over the flooding of the natural Lake Naganuma.

Since completion, the dam has been noted as a site for boat racing. In October 1999, the 8th Asian Boat Championship was held at Lake Naganuma; this event also served as the Asian preliminaries for the Sydney Olympics the following year.

References

1. "Naganuma Dam ［Miyagi Pref.］ – Dams in Japan". damnet.or.jp.

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