Da'an River
Map showing the mouth of Da'an River
Map showing the mouth of Da'an River
Da'an River in Taiwan
Native name大安溪 (Chinese)
Location
CountryTaiwan
Physical characteristics
Source 
  locationXueshan Range: Dabajian Mountain
  coordinates24°25′16.8″N 121°08′27.4″E / 24.421333°N 121.140944°E / 24.421333; 121.140944
  elevation3,488 m (11,444 ft)
Mouth 
  location
Taiwan Strait
  coordinates
24°24′26″N 120°35′35″E / 24.4072°N 120.5931°E / 24.4072; 120.5931
Length105 km (65 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 is the seventh-longest river on the island, it flows through Miaoli County and Taichung City for 105 kilometres (65 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 1999 Jiji earthquake, 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. Archived from the original on 29 October 2015. 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.


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