Mysore/Mysuru: With the Cauvery Neeravari Nigam Limited (CNNL) releasing thousands of cusecs of water from the KRS reservoir to river, the retaining wall of the water basin, abutting Naguvana Farm, in Srirangapatna, Mandya district has collapsed. The retaining wall, which was renovated around six months back, collapsed just few hours after reservoir gates were open…