What is the disadvantage of hydroelectric power?

Answer 1

Hydro-power is accomplished with dams and generators. The most obvious disadvantage is that *it floods lowlands behind the dam making farming on these lands impossible. Other disadvantages include: *the danger of dam breaks. *damage to ecosystems both above and below the dams. *obstruction to migrating fish. *the lake behind the dam eventually fills with mud. *hydro-power usually does not provide enough power. *dams and generators cost a lot of money. *zebra mussels may clog intake paths to the generators. Advantages include: *better irrigation of the highlands. *power. *creation of recreational lakes. *creating new ecosystems both above and below the dam. *flood control. *rising lake border property values. These advantages mitigate most of the disadvantages.

Answer 2

Hydroelectric dams are very expensive to produce, and can only be produced in a select few areas, which are often far from cities, making the cost of transporting the electricity higher, plus almost all sites near major urban areas have already been developed.

Also, the reservoir created by a dam (which it needs to function) may cause flooding outside of the reservoir area, and may destroy ecozones and wildlife habitats.

Answer 3

• It can't be used without large supplies of flowing water.
• The reservoirs behind the dams tend to flood millions of acres of high quality farm land.
• The dams disturb migratory fish ancestral reproduction patterns.

Answer 4

It is very expensive to build. Natural habitats could be destroyed for the building of the plants. A large source of flowing water is needed. The reservoirs behind the dams tend to flood millions of acres of high quality farm land. The dams can disturb fish reproduction patterns.

Answer 5

Can dry up in a drought. Seasonal variations possibly. If a dam is built it usually means flooding a valley behind the dam which may displace people or agriculture.

Answer 6

If there is no water in the dam that supply the plant, it will stop operating

Answer 7

It causes too much pollution and you are stupid why don't you just use a book OKAY!

Answer 8

* The soil in the downstream becomes poor in quality. * Another disadvantage is is that it wastes a lot of water

Answer 9

Building dams can flood land and affect fish and wildlife