Pakistan does not need to destroy any dam in IOK. We just have to occupy those dams or if we cannot achieve the control of those massive hydropower projects then all we have to do is...
Make small holes aka spillways in the barricades off their dams or damage one of their gates through an SSG based sabotage mission. In this way, we will be able to enjoy the water of those dams for atleast next 5-6 years without getting risk of drowning our mainlands in water floods.
A sabotaged spill way in any of the dams can hamper their overall capability to control the water weapon. We should treat their hydropower potential as a threat to us, as a weapon against us!