In Sri Lanka was declared in 1995, with the intention of protecting the catchment area of the Lunugamvehera reservoir and wildlife of the area. The national park is an important habitat for water birds and elephants. The catchment area is vital to maintain the water levels of the five tanks in the down stream of Kirindi Oya and wetland characteristics of Bundala National Park. This national park also serves as a corridor for elephants to migrate between Yala National Park and Udawalawe National Park. The national park is situated 261 km (162 mi) southwest from Colombo.