Naganuma Dam

Naganuma Dam (Japanese: 長沼ダム) is a dam in the city of Tome, Miyagi, Japan, completed in May 2014.[1] The dam is located on the Hasama River, a branch of the Kitakami River system.

Naganuma Dam
Naganuma Dam under construction in 2007
Naganuma Dam is located in Miyagi Prefecture
Naganuma Dam
Location of Naganuma Dam in Miyagi Prefecture
Naganuma Dam is located in Japan
Naganuma Dam
Naganuma Dam (Japan)
LocationTome, Miyagi, Japan
Coordinates38°42′34.8″N 141°08′58″E
Construction began1975
Opening date2014
Owner(s)Miyagi Prefecture
Dam and spillways
Type of damEarthfill dam
ImpoundsHasama River
Height15.3 meters
Length1050 meters
Reservoir
Total capacity31,800,000 m³
Catchment area570 sq km
Surface area610 hectares

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.

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