[2] To the north of Parsa National Park, the East Rapti River and Sivalik Hills form a natural boundary to human settlements.

[3] Before being converted to a protected area, the region was a private game reserve and hunting park for both the British and Nepalese elite.

Chir pine grows in the Churia Hills; Khair, sissoo and silk cotton trees occur along watercourses.

[4] An estimated 919 floral species have been recorded including 298 vascular plants, 234 dicots, 58 monocots, five pteridophytes, and one gymnosperm.

[6] A three-month camera trapping survey in February 2017 revealed the presence of 19 Bengal tigers, indicating a substantial increase of the population.