Guwahati, Nov 10: A study on downstream impact for three hydropower projects has emphasised the need for floodplain zoning, community preparedness and coordination of dam water release to safeguard downstream communities and agricultural assets.

The study 'Flooding scenario generation and discharge based downstream impact study in Assam for Ranganadi, Doyang & Kurichhu hydro power projects' was done by NESAC in collaboration with ASDMA, taking into account observed peak discharges of dam water from the projects and hypothetical flooding scenarios.

The peak observed water discharge of 760 cumec Ranganadi hydroelectric project could flood 1,391 hectares of land downstream, it noted. Dam water release data from the Bhutan project was not available with the researchers and it had to rely on

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