It was subsequently expanded to in the year 2011 vide gazette notification No: FEE302 FWL2011-(V), Bangalore, dated:27-12-2011. Post expansion the sanctuary spans across Udupi, Kundapura, Karkala, Thirthahalli taluks of Udupi and Shivamogga districts. The sanctuary was expanded by adding Balehalli Reserve Forest, Agumbe State Forest, Someshwara Reserved Forest and Tombatlu Reserved Forest areas, to the existing sanctuary. The expanded sanctuary forms a contiguous stretch of protected area that includes Mookambika Wildlife Sanctuary, Sharavathi Wildlife Sanctuary and Kudremukh National Park.