Centre for Environmental Studies
Centre for Environmental Studies
Barrages would prevent Polavaram dam from being an economic and environmental disaster : Analysis reveal
Posted on 12 Jan, 2010 02:20 PMProf.T.Shivaji Rao,
Director, Centre for Environmental Studies,
Gitam University, Visakhapatnam.
Historical Developments: Initially the Polavaram project was proposed as a storage reservoir with FRL at +150ft with a water storage of about 150TMC in 1941. Subsequently many changes were made and in 1948 it emerged as Rampada Sagar dam with FRL at +208ft. with water storage of 836 TMC including 150 MW of hydro-power generation at an estimated cost of 129 crores (at 1948 rates) This scheme was abandoned because it was too costly and was bristled with foundation and construction problems. Subsequently several expert committees were appointed by the Government of India to study the problems of Godavari water utilisation. These committees under the Chairmanship of Dr.A.N. Khosla (1953), Mr.Gulhati (1963) and Mr.A.C.Mitra (1965) suggested to the state Government to build a barrage at Polavaram for improving the irrigation facilities and also to divert Godavari flood water into Krishna river. https://www.thehindu.com/2009/05/02/stories/2009050260540600.htm
Cloud seeding for increasing rainfall
Posted on 16 Nov, 2007 08:18 PMDue to the heat from the Sun the water in the rivers, lakes and Oceans becomes water vapour. As this hot moist air rises into the sky the temperature gets reduced at 7oC per km height in the sky.