Ganges river dolphin population estimation survey was carried out in the Ganga River stretch between UP Bihar Border - Chausa to Doriganj, Patna stretch - Doriganj to Barh, Barh to Sultan Ganj, Sultan Ganj to Manihari, Manihari – Rajmahal to Farakka. In West Bengal between Farakka feeder canal, Hooghly, and in two tributaries ropop Narayan and KosiIn Brahmaputra a total of 884 km was surveyed. Other than these two tributaries of Brahmaputra, Kulsi - 69 km and Subhansari - 93 km was surveyed. Acoustic monitoring of dolphins in response to boat noise preliminary study was carried out. At 46 points in river Brahmaputra covering about 900 km distance in order to estimate the overall water quality of river Brahmaputra at different geographical locations and through out the survey period the water quality was assessed for Brahmaputra, Ganga and Hooghly. Boat based Bird survey awareness activities was carried out in Assam and West Bengal.