In the Supreme Court, Tamil Nadu accused Kerala of both "wilfully obstructing" work that was necessary to repair the over 125-year-old Mullaperiyar dam and "crying foul" over its safety.
About
Location: On the Periyar River in Kerala's Idukki district
Its building was finished in 1895.
The dam was built to redirect the waters of the west-flowing River Periyar eastward, into the dry areas that receive rain shadows in the Tamil Nadu districts of Theni, Madurai, Sivaganga, and Ramanathapuram.
The dam was constructed to supply the temple town of Madurai in Tamil Nadu with the water it needs.
For this reason, the Tamil Nadu government runs the dam even though it is located in Kerala.
The operational rights were given to Tamil Nadu in accordance with a 999-year lease agreement made during British rule.