Correct Answer: (1) Andhra Pradesh, Odisha
Solution:Vamsadhara River is an east flowing river which originates in Kalahandi district of Odisha, flows in Odisha, along its boundary with Andhra Pradesh and finally joins the Bay of Bengal at Kalingapatnam, Andhra Pradesh.- It is the main river of north eastern Andhra region and the Boddepalli Rajagopala Rao Project was constructed on it to meet the irrigation needs of the region.