Under the Development Plan (DP) of Mumbai 2034, a buffer zone was designated on either side of all four rivers of Mumbai, Mithi, Oshiwara, Dahisar and Poisar serving as a detention basin to retain excess rainwater.

Now, an activist has raised concerns over a growing number of illegal constructions near rivers in recent years, warning that these structures could block water flow during heavy rain, creating a dangerous situation. He pointed out one such building in Marol, located right next to the Mithi River near T2. The structure has been under construction for over five years and is now nearly complete.

Activists claim that such constructions, which violate the buffer zone requirement, pose significant environmental and flood-related risks.