Mr.Uttam Rao, A multi purpose dam cannot be built at Hogenakkal as its distance from Mettur reservoir is within 100 kms. Two dams shouldn't be built within 100 kms radius that too in seismically active zone. The largest fault in South India runs closer to this region and constructing two dams nearby will put people in this region in greater risk. Morover, TN cannot divert this water for agricultural purpose because about 70% of Dharmapuri and krishnagiri districts are covered by rain forests. Agriculture is comparatively less as it is a rocky lanscape.