'When people will build up resistance house to house and come to the street, then it'll be the real time. That time has not yet come,' she told the organisers who sought politicians' participation in the long-march.
Former prime minister Zia unveiled her plans to mobilise people at home and international opinion even as a parliamentary team that visited India returned without being able to land at the site of the proposed dam over Barak river in Manipur state.
Efforts to land the 11-member team failed on two occasions last week due to inclement weather.
Team leader and former water resource minister Abdur Razzak said that he would return at a future date to make an on-the-spot study of the dam project.
Zia and her Islamist ally Bangladesh Jamaat-e-Islami have joined a section of environmentalists and NGOs to allege that the dam would have an adverse impact on Bangladesh's environment.
India denies this and invited the parliamentary team to visit. Zia and her allies boycotted the visit alleging that the water resource experts on the team were not 'neutral'.