Dajia River () is the fifth-longest river in Taiwan located in the north-central of the island. It flows through Taichung City for 142 km.
The sources of the Dajia are: Hsuehshan and Nanhu Mountain in the Central Mountain Range. The Dajia River flows through the Taichung City districts of Heping, Xinshe District, Dongshi District, Shigang District, Fengyuan, Houli District, Shengang, Waipu District, Dajia District, Qingshui, and Da'an before emptying into the Taiwan Strait.
Taiwan's Central Cross-Island Highway runs along the Dajia River from Heping to Dongshih. The Taichung Beltway begins in Fongyuan and follows the Dajia through into Cingshuei.
The of the upper Dajia River are the only habitats of the critically endangered landlocked Formosan salmon.
Hydroelectricity
The Deji Reservoir (), formed by
Techi Dam, is a 592-hectare reservoir in Dajia District.
The reservoir provides municipal
drinking water, generates hydroelectric power, is used for recreation and
flood management.
Techi and a cascade of five other dams on the Dajia (in sequence from hill top, the
Qingshan Dam,
Kukuan Dam,
Tienlun Dam, Ma'an Dam and
Shigang Dam) produce up to 1,100
of hydroelectric power and generate more than 2.4 billion
kilowatt hour per year.
Incidents
The Dajia experiences frequent
during
Tropical cyclone and heavy
rain, damaging homes and breaking up roads, sometimes permanently. In September 2008, rains from Typhoon Sinlaku resulted in storm-swollen waters which washed away supports for a section of Houfeng Bridge (which links Houli Township and Fengyuan City), leaving six people dead.
In June 2010, the bridge finally reopened to vehicular traffic after over NT$1.4 billion of reconstruction work.
See also
-
List of rivers in Taiwan
-
Taichung Aquarium