Advantage of building dam:
-prevent flooding in lower course
-produce hydroelectric power for economic and industrial development
-better for irrigation
-can store water from rain and directly from the rivers so we have water during times of droughts
-improve water transport
-attract tourists
Disadvantage of building dams:
-it's very expensive
-many people have to move
-upper-middle course will be flooded
-historical sites will be flooded
-collapse of the dam may cause great damage
-the living environment of animals and fishes will be destroyed in the lower course
by using a lot water
Building dams is a threat to fish because it takes away from their habitat and breeding grounds. Dams may also hinder their ability to migrate.
Architects.
Nothing they rock
building houses or dams
beaver
dams
they route it differently
Building dams
It floods the land upriver and the water dries up downriver meaning countries downriver are starved of water.
dams
The animal known for building dams and lodges in rivers and streams by eating wood is the beaver.