Souparnika River or Sowparnika nadi is a river flowing through Kundapur taluk in Karnataka, India. It joins with the Varahi River, Kedaka River, Chakra River, and Kubja River known as Panchagangavali river and merges into the Arabian Sea. It flows near Mookambika temple, Kollur hence sometimes known as Kolluru nadi and is considered holy river by devotees of the temple.