The protestors gathered outside Nehru Park in Guwahati to oppose the Siang dam projects, citing environmental concerns and demanding the release of arrested protesters. Guwahati, Oct 30: A group of citizens staged a protest in front of Nehru Park in Guwahati on Friday against the proposed 11,000-megawatt Upper Siang Multipurpose River Project in Arunachal Pradesh, demanding the cancellation of the project and the unconditional release of leaders and protesters arrested during the.