Kaeng Krachan National Park was established in 1981, the 28 th National Park in
Thailand. It is the largest national park in Thailand, with 2,914.70 sq.km. of forest
in the watersheds of the Phetchaburi and Pranburi rivers. It includes portions of
Nong Ya Plong, and Kaeng Krachan districts in Phetchaburi Province and of Hua Hin
district in Prachuap Khiri Khan Province.
His Majesty King Bhumipol Adulyadej has visited the site many times, both before
and after the construction of the dam. He has always been very concerned about the
conservation of this watershed area, an indicated in his speech of October 29, 1979.
“ In Phetchaburi watershed forest, illegal logging or cultivation, because they cause
The National Park was designated on June 12, 1981 ; its original borders encompassed
2,478 sq.km. Later, in the park area was extended, as proposed by the Hua Hin Environmental
Conservation Group, to cover the boundary between Phetchaburi and Prachuap Khiri
The area, about 45 squares kilometres, consists of both ground and water in reservoir.
The vastly forest upper the Kang Kra Jan Dam is on complicated mountain ranges which
the highest peak is 1,200 meters above sea level and about 500 meter above sea level.
Most of the mountains are Granite Mountain, few are Limestone Mountains, and many
are full of fluoride. And also most of the area is covered by rain forest so that
is the source of Phet Buri River and Pran Buri River.
The park is composed of two major watersheds. About half of the area drains to the
Phetchaburi River, which flows to Kaeng Krachan dam at the eastern edge of the park
and then down through farmland to the provincial capital of Phetchaburi. The southern
haft of the park drains to the Pranburi River, which flows south to the Pranburi
dam and then on to the town of Pranburi in Prachuab Khiri Khan Province. Because
of abundant rainfall and undisturbed forest cover in these watersheds, the streams,
waterfall and rivers of Keang Krachan flow year round.
The park is composed of two major watersheds and a large evergreen forest. About
half of the area drains to Phetchaburi River, which flows to Kaeng Krachan dam and
the southern half of the park drains to the Pranburi River. Humidity remains high
throughout the year, with heavy rain during the rainy season and cool weather for
much of the year. The steep forested areas of the park is even more humid than the
young forest and cleared lands in the lower elevations.
In rainy season, the national park will be closed Ban Krang and Panoen Thung area
during August and October every year for visitors safety and forest recovering. Continued
Kaeng Krachan National Park, Phetchaburi Province Thailand.