Nam Tok Phlio National Park comprises an area of 134.5 square kilometer. The park covers areas in many districts of Chanthaburi province which are Mueang, Laemsing, Khlung and Makham districts. The area is rich with forest and filled with the dense of high mountains where are the headwater of strems and rivers. The feature of this fall is its beauty and water that flows all year round. It is well known to people living in nearby provinces. Its location is about 14 kilometers from Chanthaburi. The paved road makes the park very accessible to visitors and enabling the holiday – trip easy and relaxing.

The fall, itself, was one of the 14 forest parks that government at tempted to designate to be national park. Consequentially, it was declared to be as national park on May 2nd 1975, using the name “ Khao Sa Bap National park.” But on September 29th 1982, it was renamed to “Nam Tok Phlio “Following its Feature which the water falls down delicately and smoothly. [the word “Polio”, of Thai, means the delicate movement like the way of ballet dance].

Topography
The area contains the range of mountain which rise from 300–624 meters high. The range are less steep in the south and plains can be seen around the slopes. The highest summit is on Map WA Krok mountain, which reaches 924 meters, creating many streams like Khlong Phlio, Khlong Narai, Khlong Troknong and Khlong makok. [Khlong means canal]. The park covers an area of about 135 sq.km.

Climate
The weather from February to April is quite hot, from May to October is heavy rain about 3,000 mm. of rain per year, and from November to February is nicely cold approximately 26 degrees Celsius all the year round.

Flora and Fauna
The park area is covered with dense Tropical rain forest consisting of many important tree species which are Aphanamixis polystachya, Aquilaria crassna, Scaphium scaphigerum, Sandoricum koetjape Irvingia malayana, Cotylelobium Lanceolatum, Alstonia scholais, Dallbergia oliveri for instand.

There are a lot of wild animals in this area because many watersheds providing nutrient sources for animals. The animals that may be seen here are serow, bear, tiger, Common mustjac, porcupine, macaque, langur gibbon, squirrel, mouse deer, pangolin, mongoose, otter, and rare bird like and 90 endemic species of bird such as little heron, brahminy kite, shika, created serpent – eagle, besra, pigeon, imperial pigeon, red turtle – dave, emerald dove, red – headed trogon, mountain imperial pigeon, hombill, barbet, vernal hanging parrot, shrike, woodpecker, drongo, hill myna, bulbul and white – rumped shama. In addition, some other fishes like Tor soro, Jullien’s mud carp Labiobarbus can be seen in the streams and swamps.