India, April 30 -- New Delhi

The Delhi Development Authority (DDA) has identified 587 hectares of Yamuna floodplains area based on the one-in-25-year flooding criteria - a location along a river that has a 4% chance of flooding in a year - and will undertake a ground survey, remove encroachments and erect bollards where required, it informed the National Green Tribunal (NGT).

"As of now, in the preliminary analysis, which was a tabletop exercise, the khasra layer provided by GSDL has been superimposed to identify DDA Khasras falling within the "O" Zone and the 1:25-years floodplain of the Yamuna River. Subsequently, built-up areas have been marked on the identified DDA Khasras-approximately 562 hectares in the "O" Zone and around 25 hec...