Centre relaxes construction hurdles in Ganga flood plain

Published 11 August 2026 · india

The Union government eased restrictions governing construction along the Ganga flood plain this week, paving the way for building projects in areas which are only

The Union government eased restrictions governing construction along the Ganga flood plain this week, paving the way for building projects in areas which are only subject to moderate or rare flooding. This has been done by revising the definition of a ‘flood plain’ and deleting a clause in the legislation that expressly prohibited construction, according to an August 10 gazette order from the Mission for Clean Ganga (NMCG), affiliated to the Jal Shakti Ministry. A senior government official told The Hindu that the amendments did not represent any “dilution of standards”, but rather, attempted to correct an inconsistency in the law. The ₹30,000 crore Namami Ganga mission, part of the NDA government’s ambitious venture to stem pollution in the Ganga river and maintain its ecological health, sources its legal teeth from the River Ganga (Rejuvenation, Protection and Management) Authorities Order, 2016. ‘Construction-free zone’ That notification defines the Ganga ‘flood plain’ as “the area of the river or its tributaries which comes under water on either side of it due to floods corresponding to its greatest flow or with a flood of frequency once-in-a-hundred years.” The 2016 order included a clause saying: “...the bank of River Ganga and its flood plain shall be a construction free Zone to reduce pollution sources, pressures and to maintain its natural ground water recharge functions…” Other clauses banned construction in the “active flood plain” of the Ganga, though there was no definition of what constituted “active.” Stratified regulation However, an amendment to the 2016 order, published on August 10, makes two crucial modifications.

It removes the “no construction” clause. It also adopts a stratified definition of ‘flood plain’ based on flood frequency: an ‘active flood plain’, which is immediately along the channel that submerges at least once every five years; a middle ‘regulatory zone’, subject to moderate flooding every five to 25 years; and an outer ‘warning zone’ on the periphery that floods only during severe 25- to 100-year events. While the new order does not grant blanket permission for development, it replaces the total ban on flood plain construction with a regulated, approval-based system. Strict building prohibitions are now confined exclusively to the ‘active flood plain’, with minor exceptions reserved for temporary setups like religious events. Beyond that five-year flood line, construction in the ‘regulatory’ and ‘warning’ zones is now permissible, subject to official clearances. However, any project, from roads and bridges to riverfront infrastructure, must still secure prior approval from the NMCG and regional authorities, while adhering to baseline environmental safeguards.