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Da'an River

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Da'an River
Map showing the mouth of Da'an River
Map showing the mouth of Da'an River
Da'an River in Taiwan
Physical characteristics
Source 
 • locationXueshan Range: Dabajian Mountain
 • elevation3,488 m (11,444 ft)
Mouth 
 • location
Taiwan Strait
Length95.76 km (59.50 mi)
Basin size758.47 km2 (292.85 sq mi)
Discharge 
 • maximum13,840 m3/s (489,000 cu ft/s)

The Da'an River (Chinese: 大安溪; pinyin: Dà'ān Xī) is a river in northwestern Taiwan. It flows through Miaoli County and Taichung City for 96 kilometres (60 mi). It reaches the Taiwan Strait between the Dajia District and Da'an District, Taichung.[1][2]

The Da'an River was affected by the "921 earthquake" in 1999, where a gorge was formed (called Da'an River Grand Canyon Chinese: 大安溪大峽谷). In some of the fastest erosion geologists have ever seen, the gorge is being eaten away from its upstream end at a rate of 17 meters per year. They expect the gorge to be erased after 50 years.[3][4]

Da'an River "Grand Canyon"

See also

References

  1. ^ "GeoNames Search". Geographic Names Database. National Geospatial-Intelligence Agency, USA. Retrieved 10 June 2016.
  2. ^ "Da'an River" (in Chinese). Water Resources Agency, Ministry of Economic Affairs. Retrieved 10 June 2016.
  3. ^ Jonathan Webb (18 August 2014). "Taiwan's 'vanishing canyon' has 50 years left". BBC News. Retrieved 10 June 2016.
  4. ^ Cook, Kristen L.; Turowski, Jens M.; Hovius, Niels (2014). "River gorge eradication by downstream sweep erosion". Nature Geoscience. 7 (9): 682–686. doi:10.1038/ngeo2224.