Question

hi !
what are the disadvantages of generating hydroelectricity ​

Answer 1

HII AREY

FOLLOWING ARE THE DISADVANTAGES

through hydroelectric power don't emit pollutant, it is not ecofriend.......

Cause

1.WHILE BUILDING OF DAMS MANY FOREST ARE FLODDED FOR THE SAKE OF HYDROELECTRIC. HECE DEFORESTATION

2.AS THE DAM BLOCKS THE WATER , THE VILLAGES AT THE OTHERBSIDE GET SUBMARGED DUE TO RISE IN LEVEL OF WATER

3.NO FLOW OF RIVER CAUSE BREAK IN THE LIFESTYLE OF AQUATIC ANIMALS

4.MOREOVER AOMETUMES AQUATIC ANIMALS ENTER THE TURBINE.THE BLADES OF THE TURBINE KILL THEM

5.DUE TO BLOCKAGE OF WATER , THE VILLAGES AT THE LEEWARD SIDE DONT RECIEVE SUFFICIENT WATER

for e.g..THE HYDRO POWER PLANT IN NORTH SIDE OF INDIA BLOCK THE WATER FOR PRODUCTION ....HOWEVER DUE TO LESS QUENTITY OF RAINFALL ..THE VILAGES SYFFER FROM DEHYDRATION

THIS ALL ARE THE DISADVANTAGES

HOPE IT HELPS

THANK YOU....

Answer 2

1.  Require suitable  locations and not many are available.

2.  Limited power generation capacity.

3.  Do damage a little the marine life.

4.   Require the construction of a dam and generators in hilly areas. Tough.  Takes a long duration.

5.  Power is not available throughout the year at uniform rate.

6.  Reduce the speed of water in the rivers.  So agriculture in the downstream may be affected.

7. A vast variety of flora and fauna (plants and animals) get affected.

8. Dams can be constructed only at a limited number of places.

9. it creates sedimentation of rocky sand particles thereby  creating poor sedimentation which leads to the decline of fishes reproduction