Angammedilla National Park is one of the new national parks in Sri Lanka. The region was designated national park on 6th June, 2006. Originally Angammedilla was a forest reserve within the Minneriya-Girithale Sanctuary. The park is declared mainly to protect the drainage basin of Parakrama Samudra. Angammedilla also secures the drainage basins of Minneriya and Girithale irrigation tanks, water sources in Sudu Kanda ("White hill") and habitats and wildlife of the adjacent forests. It is located 225 kilometres (140 mi) away from Colombo in Polonnaruwa District.