Question

what are the advantages and disadvantages of constructing dams across the reservoir

Answer 1

The advantage is linked to the purpose. You can build a dam to provide drinking water, recreation, flood control, power generation or a small dam for livestock. The advantage of each also has some possible disadvantages.

Answer 2

The advantage is linked to the purpose. You can build a dam to provide drinking water, recreation, flood control, power generation or a small dam for livestock. The advantage of each also has some possible disadvantages.  21 hours ago