Water Resources Planning Branch, WRA, MOEAWater Resources Planning Branch, WRA, MOEA

The knowledge of water resource planning briefly lists five projects and describe as follows :

1. Conjunctive operation types of reservoir and weir in Taiwan

   The conjunctive operation of reservoir and weir in Taiwan can be divided into two types : cooperation type of water supply and cooperation type of hydropower reservoir. The reservoir and weir conjunctive operation types in Taiwan list as table 1.

   Joint operation type	Reservoir and weir name			Note
   	Weir	Reservoir	Weir（Dam）
   1、Continuing hydropower by upstream reservoir and downstream weir		Shimen	Houchih
   		Feitsui	Zhitan
   		Liyutan	Houchih
   		Techi	Qingshan
   		Wushe
   		Zengwen
   		Wusanto
   2、Transbasin diversion hydropower	Shih-lin weir	Liyutan		Juolan hydropower plant
   3、Pumped storage hydropower		Sun Moon Lake Reservoir （Top） Mingtan （Bottom）		Mingtan Pumped storage hydropower plant

   1. Conjunctive operation of water supply：There are three types, including reservoir discharge in downstream weir, transbasin diversion from weir to reservoir, and water-pumping from weir to reservoir, respectively described as follows :
      1. Reservoir discharges to downstream weir(shown in figure 1)：Water supply joint operation of on-stream reservoir and weir in downstream river, such as Feitsui Reservoir and Zhitan Dam.
         

         Figure.1 Schematic diagram of reservoir discharges to downstream weir

      2. Transbasin diversion from weir to reservoir(shown in figure 2)：Utilizing transbasin diversion from weir to reservoir in order to joint operation of water supply, such as Shih-lin Weir and Liyutan Reservoir.
         

         Figure.2 Schematic diagram of transbasin diversion from weir to reservoir

      3. Water-pumping from weir to reservoir (shown in figure 3)：Utilizing water-pumping from weir to the reservoir located in another river basin, such as Ba-Du Weir and Hsin-Shan Reservoir.
         

         Figure.3 Schematic diagram of water-pumping from weir to reservoir

   2. Conjunctive operation through hydropower reservoir：There are three types, including：(1)Hydropower generated through upstream reservoir and downstream weir used the tail water (shown in figure 4), (2)Transbasin diversion hydropower (shown in figure 5), (3)Pumped storage hydropower (shown in figure 6).
      

      Figure.4 Schematic diagram of hydropower reservoir and downstream weir

      

      Figure.5 Schematic diagram of transbasin diversion hydropower

      

      Figure.6 Schematic diagram of pumped storage hydropower