The final hearing on the legal battle between Tamil Nadu and Kerala over the controversial Mullaperiyar dam will be held from April 9 in the Supreme Court.   

A five-judge Constitution Bench of justices R M Lodha, H L Dattu, C K Prasad, Madan B Lokur and M Y Eqbal directed both the states to exchange all documents and findings of the expert committee by March 15 and posted the matter for final day-to-day hearing from April 9.   

There has been tension between the two states over the safety of the dam. While Tamil Nadu contends that the dam is safe and its water level has to be raised from 132 ft to 136 ft, Kerala says the structure is weak and it has to be replaced with a new one.