The Amarja is a river which flows in Gulbarga District, Karnataka, India. Iit is born at Duttargaon and flows up to 50–60 kilometres and will merge into bhima river at Sangam Kshetra Ganagapura, Gulbarga District.Sangam Kshetra is a meeting point of Bhima and Amarja rivers. The water of these rivers, especially at their confluence, called Sangam, are considered extremely holy. Those who bathe in Sangam will be freed from their sins, and their wishes will be fulfilled. There is a temple in Sangam in which Shree Narasimha Saraswati Swamy (The second incarnation of Lord Dattatreya) performed the Anusthana.