A team from IIT Madras has helped triple the Irrawaddy dolphin population at the Chilika Lake, Asia's largest brackish water body, in Odisha. The researchers conducted geotechnical, hydraulic and satellite imagery studies and developed a dredging methodology for the project. The project will also be of massive help for 200,000 fishermen living in 132 nearby villages as it resulted in a seven-fold increase of fish. 'The lake was in a degraded condition and included in the threatened list by Ramsar Convention in 1993,' IIT Madras professor said. Thanks to the restoration, the lake is now off the threatened list.