Recently, China has announced the construction of three new hydropower dams named Dagu, Jiexu and Jiacha on which among the following rivers?

Yarlung Zangbo River
China has given the go-ahead for the construction of three new hydropower dams on the middle reaches of the Brahmaputra river, ending a two-year halt in approving new projects on the river amid concerns from India and environmental groups. China has, so far, only begun construction on one major hydropower dam on the main stream of the middle reaches of the Brahmaputra or Yarlung Zangbo as it is known in China – a 510 MW project in Zangmu in the Tibet Autonomous Region (TAR), which began to be built in 2010. One of the three approved new dams is bigger than the Zangmu project. A 640 MW dam will be built in Dagu, which lies 18 km upstream of Zangmu. Another 320 MW dam will be built at Jiacha, also on the middle reaches of the Brahmaputura downstream of Zangmu. A third dam will be built at Jiexu, 11 km upstream of Zangmu. The capacity of the Jiexu dam is, as yet, unconfirmed.