Question

what are the disadvantages of dams

Answer 1

Dams detract from natural settings, ruin nature's work

Dams have inundated the spawning grounds of fish

Dams have inhibited the seasonal migration of fish

Dams have endangered some species of fish

Dams may have inundated the potential for archaeological findings

Reservoirs can foster diseases if not properly maintained

Reservoir water can evaporate significantly

Some researchers believe that reservoirs can cause earthquakes

Answer 2

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. ... Most dams contain sediment storage, and at some point this storage is filled, at the end of the design life of the structure.