Boundary West Kalimantan Province is located in the western part of the island of Borneo, or in between the lines 2°08'N and 3°05'S and between 108°0'E and 114°10'E. The province is traversed by the Equator (latitude 0°), precisely through the city of
Pontianak. West Kalimantan has a tropical climate, with often high temperatures accompanied by high humidity. Other specific characteristics are that the West Kalimantan region is one of the provinces in Indonesia which has a land border with another country, namely the State of
Sarawak,
East Malaysia. Even with this position, West Kalimantan is currently the only province in Indonesia that have officially has an access road to get in and out of a neighbouring country. West Kalimantan and Sarawak have open roads approximately 400 km long, spanning Pontianak-Entikong-
Kuching (Sarawak, Malaysia) and can be reached about six to eight hours of travel. In the northern part of the province, there are four regencies that directly borders Malaysia, namely
Sambas,
Sanggau,
Sintang and
Kapuas Hulu, which stretch along with the Kalingkang Mountains-Kapuas Hulu. Most of West Kalimantan is low-lying land, with a total area of 147,018 km2, or 7.53 percent of the total Indonesian land area or 1.13 times the size of the island of
Java. This region stretches straight from north to south along more than 600 km and about 850 km from west to east. Following the splitting up of the former unified Papua province, West Kalimantan is Indonesia's second largest province by area, after
Central Kalimantan (153,430.36 km2). The largest regency is
Kapuas Hulu (31,318 km2 or 21.3 percent of the provincial area), followed by
Ketapang (30,012 km2 or 20.4 percent) and
Sintang (22,026 km2 or 15.0 percent), with the rest spread over the nine other regencies and two cities.
Topology In general, West Kalimantan land is low-lying and has hundreds of rivers are safe when navigable, slightly hilly which extend from west to east along the valley Kapuas and Natuna Sea / Strait Karimata. Most of the land area is a swampy mix of peat and mangrove forests. The land area is flanked by two mountain ranges, namely, Kalingkang Mountains in the North and the Schwaner Mountains in the south along the border with the province of Central Kalimantan. Judging from the soil texture, the majority of West Kalimantan's area consists of the soil type PMK (podsolic red-yellow), which covers an area of about 10.5 million hectares, or 17.28 per cent of the total area of 14.7 million hectares. Next, the ground OGH (organosol, gley and hummus) and the alluvial soil of about 2.0 million hectares, or 10.29 per cent sprawled across Dati II, but most likely in the coastal district. Influenced by the vast lowlands, the heights of the mountains are relatively low as well as non-volcanically active. The highest mountain is Mount Baturaya in Serawai District of Sintang Regency which has an altitude of 2,278 metres above sea level, far lower than Mount Semeru (East Java, 3,676 metres) or Mount Kerinci (Jambi, 3,805 metres). Mount Lawit is located in Kapuas Hulu District, Embaloh Hulu and more formerly known in West Kalimantan. It only is the third highest because it has a high 1,767 metres, while the second highest is Mount Batusambung (in Ambalau District) with a height of up to 1,770 metres.
Lakes and Rivers West Kalimantan is an area that could be called "The Thousand Rivers Province". The nickname is in line with the geographical conditions that have hundreds of large and small rivers, among others, which can be and often are navigable. Several major rivers are still the lifeblood and mainline to transport the countryside, although the road infrastructure has been able to reach most districts. The longest river is the
Kapuas River(or
sungai Kapuas), which is the longest river in Indonesia (1,086 km), along which 942 km are navigable. Other great rivers are the Melawi, (navigable 471 km), Pawan (197 km), Kendawangan (128 km), Jelai (135 km), Sekadau (117 km), Sambas (233 km ), and Landak (178 km). Although rivers are very numerous in West Kalimantan, there are only two significant lakes in the province. These are Lake Sentarum and Lake Luar I, which are in
Kapuas Hulu. Lake Sentarum has an area of 117,500 hectares, which sometimes is almost dry in the dry season, and Lake Luar I, which has an area of approximately 5,400 hectares. Both of these lakes have potential as tourist attractions. == Government and administrative divisions ==