The national park contains the reservoirs of Lahugala, Kitulana and Sengamuwa and they are ultimately empties to Heda Oya river.

[3] Nearby Magul Maha Viharaya is supposed to have been built for the occasion of the marriage of King Kavan Tissa to princess Viharamahadevi.

[1] The national park's vegetation is classified into Sri Lanka dry-zone dry evergreen forests.

[3] Common floral species of the park include Drypetes sepiaria, Manilkara hexandra, Berrya cordifolia, Vitex pinnata, Chloroxylon swietenia, and the golden shower tree.

Endemic Bufo atukoralei, Fejervarya limnocharis, Polypedates maculatus, Banded bull frog, and Microhyla rubra are among the amphibians of the national park.

The Sri Lanka Wildlife Conservation Society is initiated a project to establish an electric fence to protect four villages adjacent to the southern boundary of the park.