lmfao, you lots are a joke.
Where do you think that river eventually goes? Your Jamuna river is Brahmputra in India, Yarlung Tsangpo in Tibet. Its the same river! China started to dam Yarlung Tsangpo/Brahmputra/Jamuna, India will dam all the tributaries(already started) to secure water for North East India, only the Bangladeshis will be left out dry.
Get a grip eh, they don't teach geography in BAngladesh?
Let us make a serious discussion instead of throwing mud at each other. I would like you guys to note the following on the Jangmu Dam:
1) A lot of precious water comes down to the north of Himalaya and makes the river Jamuna/Brahmaputra that enters Bangladesh and flows further down to the BoB.
2) The upper riparian country China plans to build a dam across this river in order to collect water during monsoon when melted ice from the Himalayan north flows down to upper reach of Brahmaputra.
3) Why to collect water? The purpose is to send water to the Chinese agriculture in north and also to produce electricity.
4) However, China will have to pump the water up by many hundred meters to the high mountains from where the water will get an easy flow to the northern agrilands. It will not be a completely free flow because the water will have to surmount many more mountains ahead. China has two options to tackle the mountain hindrances.
5) One is to construct very very expensive and many long mountain tunnels through the route.
6) Another is to build cheaper hydro-electric power stations. Electricity will be used to pump up the water to the mountains for a free flow downward.
7) Now, what are the sources of power? It is the flow of same Brahmaputra river a little downstream that will revolve the turbines.
8) After producing power at the power stations the water automatically goes down to the lower Brahmaputra and to Bangladesh.
9) China will stock water in summer and use in winter. So, it is possible that BD will get more water during winter and less in Summer. This suits BD interest very well.
10) Issue here is India's self-centered miser mindset. It will stop this winter water and take it all by itself when BD needs more water for agriculture.
If Bangladesh has a friend like India, it does not need an enemy any more.