Shimen Dam
| Shimen Dam (石門 水庫) | |||||||
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| Coordinates | 24 ° 48 '38 " N , 121 ° 14' 39" E | ||||||
| Data on the structure | |||||||
| Construction time: | 1956-1964 | ||||||
| Height above foundation level : | 133.1 m | ||||||
| Power plant output: | 90 MW | ||||||
| Data on the reservoir | |||||||
| Altitude (at congestion destination ) | 245 m | ||||||
| Water surface | 8 km² | ||||||
| Storage space | 208.76 million m³ (2011) | ||||||
| Total storage space : | 215.26 million m³ (2011) | ||||||
The Shimen Dam ( Chinese 石門 水庫 , Pinyin Shímén Shuǐkù ) (also known as Shihmen ) is a dam in Taoyuan in the north of the island of Taiwan . It houses the third largest reservoir on the island.
Construction history
Already at the time of the Japanese rule over Taiwan there were plans to dam the river Dahan in the north of Taiwan by means of a dam to obtain water. However, as a result of the outbreak of World War II , the project was not carried out. In 1955 the project was started again in cooperation between the Taiwan and the USA . Construction began the following year and lasted nine years, adversely affected by some geological delays. The building was inaugurated on June 14, 1964 by Chen Cheng , Vice President of the Republic of China .
Capacity and usage
The Shimen Dam is a rubble dam . The reservoir was originally planned for a total storage space of 309.12 million m³. In the course of time, however, the capacity decreased considerably due to sedimentation and in 2011 was only approx. 210 million m³.
The reservoir is used for power generation, agricultural irrigation and drinking water supply in the area of the cities of Taipei , New Taipei and Hsinchu and the counties of Taoyuan and Hsinchu . It is also known as a tourist destination.
environmental issues
The advanced deforestation of the surrounding hilly landscape causes soil erosion and frequent landslides, sometimes exacerbated by storms and typhoons . The loose rock and earth discharge into Lake Shimen, which is consequently affected by heavy sedimentation . The high nutrient content of the water caused by the deposits enables algae to thrive ( eutrophication ), which has a negative effect on the water quality. To prevent further sedimentation, numerous dams were built along the upper reaches of the Dahan River to filter rocks and sand from the water. In Shimen Lake itself, attempts are being made to reduce the mass of the sediments by dredging.
See also
Web links
- Shimen Reservoir on the Water Resources Agency website , Taiwan (Chinese)
- Brief overview in table form (Chinese)
gallery
View of the lake area
View from the east side of the raid
Looking down from the raid
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Individual evidence
- ↑ Taiwan Today, ( Memento of the original from December 24, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved October 1, 2013.
