Our first Prime Minister, Mr. Jawaharlal Nehru, called the dams "the temple of modern India". These dams, that have been constructed to support the economic development of the country, can be destructive at times.
They may cause floods because sometimes, they are constructed without proper planning and sometimes low standard construction material is used. This inferior quality of construction material increases the chances of floods. Construction of these dams can make the area, in which they are constructed, 'earthquake prone', which may lead to landslides and the water to flow out of dams.