Prof. Paranjpye is an expert in rivers and water culture. He was a member of the Government of Maharashtra’s Rajya Jal Arakhada committee. He also made a significant contribution as part of the National Expert Committee of Interlinking of Rivers appointed by the Government of India. He has been invited as an expert member to Bolivia, Costa Rica and South Africa. He has devoted his life to the conservation of dams, river valleys, water resources and river basin management.