Yabakei Dam ( ja, 耶馬溪ダム) is a
dam
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, a ...
in the
Ōita Prefecture
is a prefecture of Japan located on the island of Kyūshū. Ōita Prefecture has a population of 1,136,245 (1 June 2019) and has a geographic area of 6,340 km2 (2,448 sq mi). Ōita Prefecture borders Fukuoka Prefecture to the northwest, Kumam ...
,
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
.
Overview
The Yabakei Dam is a 62.0 meter high gravity-type concrete dam under the direct control of the
managed by the Kyushu Regional Development Bureau of the
.
It is the main dam in the
Yamakuni River
The is a river that flows through the Ōita Prefecture in Japan. In its lower reaches it provides the boundary to the Fukuoka Prefecture to the west.
The Yamakuni River arises on the slopes of the sacred Mount Hiko on the border of Oita and Fuku ...
system, and is a specific multipurpose dam for the purpose of hydraulic control, water utilization and
hydroelectric power
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...
generation from the Yamakuni River's tributary the Yamautsuri River. Together with the
Heisei Ozeki Barrage, which is located downstream, it occupies an important position not only in
Nakatsu City but also in
Kitakyushu City
is a Cities of Japan, city located in Fukuoka Prefecture, Japan. As of June 1, 2019, Kitakyushu has an estimated population of 940,978, making it the second-largest city in both Fukuoka Prefecture and the island of Kyushu after the city of Fuku ...
,
Fukuoka Prefecture
is a Prefectures of Japan, prefecture of Japan located on the island of Kyūshū. Fukuoka Prefecture has a population of 5,109,323 (1 June 2019) and has a geographic area of 4,986 Square kilometre, km2 (1,925 sq mi). Fukuoka Prefecture borders S ...
and the Kyogetsu area.
* Flood control capacity - 11.2 million m
3
* Water utilization capacity - 9.8 million m
3
** Unspecified irrigation water - 5.5 million m
3
** Urban water and power generation (subordinate) - 4.3 million m
3
At the survey stage, it was tentatively named Kakisaka Dam, which is derived from the large character of the location's name, but before the start of construction, the name was changed to Yabakei Dam, which was named after the scenic
Yabakei
The gorge of is a nationally designated Place of Scenic Beauty spanning the municipalities of Kusu and Nakatsu in Ōita Prefecture, Japan. Located within Yaba-Hita-Hikosan Quasi-National Park, it was selected as one of the 100 Landscapes of ...
, which is the best tourist destination in the area.
Yabakei Lake
The artificial lake formed by the dam is named Yabakeiko. However, although it bears the name of
Yabakei
The gorge of is a nationally designated Place of Scenic Beauty spanning the municipalities of Kusu and Nakatsu in Ōita Prefecture, Japan. Located within Yaba-Hita-Hikosan Quasi-National Park, it was selected as one of the 100 Landscapes of ...
, it is not designated as a
Yaba-Hita Hidehikoyama National Monument. Yabakei Lake has a fountain and the scenery of the dam is beautiful, so it is known as a tourist spot in
Nakatsu City.
In 1994, Japan's first public water ski facility, Yamaki Aqua Park, opened, and in addition to water skiing, you can now enjoy wakeboarding and banana boats. It used to be closed in winter, but has been open all year since 2006
References
External links
* https://www.city-nakatsu.jp/docs/2012062100015/
* http://www.qsr.mlit.go.jp/yamakuni/
* http://damnet.or.jp/cgi-bin/binranA/All.cgi?db4=2783
* http://damnet.or.jp/cgi-bin/binranB/TPage.cgi?id=164&p=3
Dams in Ōita Prefecture
Dams completed in 1984
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