City advocates on Monday abstained from courts, including Madras High Court, sessions courts and tribunals, over the contentious Mullaperiyar dam issue.
The advocates, led by Madras High Court Advocates Association president G. Mohanakrishnan, staged a demonstration in front of the High Court and also took out a rally in the court premises.
They also burnt an effigy of Kerala Chief Minister Oommen Chandy and raised slogans against the Centre and Kerala governments.
The advocates sought an amicable solution to the issue.
Tamil Nadu and Kerala are locked in a row over the dam, with the latter wanting to dismantle the 116-year-old structure on safety grounds and construct a new one.
Tamil Nadu is opposed to it, saying the dam is safe.