Roy has campaigned along with activist Medha Patkar against the Narmada dam project, saying that the dam will displace half a million people with little or no compensation, and will not provide the projected irrigation, drinking water, and other benefits. Roy donated her Booker prize money, as well as royalties from her books on the project, to the Narmada Bachao Andolan. Roy also appears in Franny Armstrong's "Drowned Out", a 2002 documentary about the project. Roy's opposition to the Narmada Dam project was criticised as "maligning Gujarat" by Congress and BJP leaders in Gujarat.