TIRUCHY: With the quantum of discharge from the Mettur dam increased to 1.75 lakh cusecs on Thursday evening, the excess water at the Mukkombu barrage in Tiruchy has been released into the Kollidam and Cauvery rivers at a rate of 98,120 cusecs and 34,611 cusecs respectively. With the inflow expected to rise by another 40,000 cusecs by night, excess water …