Okuno Dam

You can help expand this article with text translated from the corresponding article in Japanese. (February 2020) Click [show] for important translation instructions.

View a machine-translated version of the Japanese article.
Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.
Consider adding a topic to this template: there are already 1,076 articles in the main category, and specifying|topic= will aid in categorization.
Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.
You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Japanese Wikipedia article at [[:ja:奥野ダム]]; see its history for attribution.
You may also add the template {{Translated|ja|奥野ダム}} to the talk page.
For more guidance, see Wikipedia:Translation.

Dam in Shizuoka Prefecture, Japan

34°56′09″N 139°04′11″E / 34.93583°N 139.06972°E / 34.93583; 139.06972Construction began1972Opening date1989Operator(s)Shizuoka PrefectureDam and spillwaysImpoundsItō-Ōkawa RiverHeight63 metersLength323 metersReservoirCreatesLake MatsukawaTotal capacity4,600,000 m3Catchment area11.7 km2Surface area31 hectares

Okuno Dam (奥野ダム, Okuno damu) is a multi-purpose dam on the Itō-Ōkawa River, located in Itō, Shizuoka, Japan.

History

The Itō-Ōkawa River is a primary source of drinking water for the city of Itō, on the eastern coast of the Izu Peninsula. However, the area is a region of heavy rains, and is prone to typhoons. The 1958 Kanogawa Typhoon caused widespread flooding and damage to property in the Itō area. From the 1960s, the area around Itō began to develop as a bedroom community for Atami, as well as a popular vacation destination due to its beaches, hot spring resorts and ease of access to Tokyo. In 1972, a project office was established and construction begun by a consortium consisting of Kajima Construction and Kumagai Gumi. Due to the geography of the site, a rock-fill dam design with a central spillway and a height of 63 meters was selected. The estimated completion time was 1983. However, due to difficulties arising from transporting the necessary stones from distant locations, work was not completed until 1989. Although styled as a 'multi-purpose dam', the dam has no associated hydroelectric power facilities, and its primary function is flood control and the supply of drinking water.

The reservoir impounded was named Lake Matsukawa (松川湖, Matsukawa-ko) in 1987, and is a popular recreational area for sports fishermen and bird-watching.