What is Delhi's O-Zone? Why 15 lakh homes face demolition risk

Key points

• A major demolition drive targeting illegal construction in Delhi's Yamuna floodplain has triggered anxiety across several parts of the capital, with authorities identifying 94 colonies falling under the "O-Zone" area where residential and commercial development is prohibited under the Delhi Master Plan 2021. The action follows repeated observations by the Delhi High Court and the Green Tribunal (NGT) on encroachments in the Yamuna floodplain, prompting authorities to intensify efforts to clear the environmentally sensitive zone.
• According to official estimates, nearly 15 lakh homes located across these 94 colonies could potentially face demolition if authorities proceed with large-scale enforcement of O-Zone regulations.
• The term refers to colonies located in the Yamuna floodplain, or khadar area, which authorities classify as part of the river’s flood zone.
• Following repeated observations by the Delhi High Court and the Green Tribunal (NGT), the administration is preparing to clear...