India, Dec. 9 -- The Delhi government has informed the National Green Tribunal (NGT) that the process of mapping out and demarcating a one-in-100-year (1:100) floodplain along the Yamuna is delayed. The work is expected to be completed by end of next year.

The submission, dated December 5, said the Central Water and Power Research Station (CWPRS) in Pune - the institute tasked with completing the process, found that the data provided by the Survey of India (SOI) was inadequate for the required analysis, with a 28.3km stretch from Burari Garden till Okhla Bird Sanctuary yet to be mapped.

The submission said the process of virtual demarcation is likely to be completed by August 2026, after which the Delhi DevelopmentAuthority (DDA) will c...