Kapuas River

The Kapuas is a very long river.

It sits on the island of Borneo. It flows from high mountains to the sea.

The river is very wide and deep. This helps large ships move on the water. Many people use the river to travel.

Lots of animals live near the water. You might see otters or crocodiles. Some fish are very special. The red arowana lives here.

Rain makes the river grow. When it rains a lot, the water fills many lakes. This helps fish move to new places.

The river is a busy place for many. It is a grand part of the land.

The Kapuas River is a very long river.

It is on the island of Borneo. It sits in the country of Indonesia. This river is the longest on the island.

The river starts in the Müller mountain range. It flows west toward the South China Sea. There, it makes a marshy delta. This delta has five arms. The widest arm is called the Big Kapuas. The river is very deep in many spots. Some parts are 27 meters deep. This helps large ships carry goods and people.

Many animals live in and around the water. You might see otters or crocodiles. Many types of fish live here too. There are about 300 kinds of fish. One special fish is the super red arowana.

Scientists also found a mud snake here. This snake can change its color like a chameleon. The river is a busy and lively place.

The Kapuas River is a truly massive waterway.

It is located on the island of Borneo in Indonesia. This river is the longest on the island. It is also one of the longest island rivers in the entire world. The river flows through the West Kalimantan province. It sits near the center of Maritime Southeast Asia. You can see where it moves through the land on this old map.

The river starts high up in the Müller mountain range. It flows west toward the South China Sea. Along the way, it creates a large, marshy delta. This delta has five different arms. The widest arm is named the Big Kapuas. The river also passes through many different types of land. It flows through steep mountains and then down into flat, wet plains. Near the river, there is a group of many lakes.

These are called the Kapuas Lakes, and they connect to the river through many channels.

Many people have studied this amazing place. Scientists often find new living things in the thick tropical forests. For example, experts found the Kapuas mud snake between 2003 and 2005. This snake is special because it can change its skin color. It works much like a chameleon does. The river has many different homes for animals. Some parts have fast streams in the mountains. Other parts have dark, still waters in peat swamps. Some fish there even have no eyes because it is so dark.

There are many important facts about the size and life of the river. The river is 1,143 kilometers long. Its basin covers more than 67% of West Kalimantan. There are about 300 different kinds of fish living in the water. One very famous fish is the super red arowana.

You can also find otters, crocodiles, and many types of crabs. The water can be up to 27 meters deep. This depth allows large ships to carry cargo and people. Some ships can even travel 902 kilometers from the mouth to reach Putussibau.

The river is a very busy path for travel and work. Large ships move goods along the water. People also use the river for fishing and moving timber. There are even big bridges that cross over the water. The Tayan Bridge is the longest bridge in Kalimantan.

The river connects the middle of the island to the western coast. It is a vital part of life for the people living in the region. The warm and wet weather keeps the whole area very green and full of life.

The Kapuas River is a massive waterway in Indonesia. It is located on the island of Borneo. This river is the longest on the island of Borneo. It is also one of the longest island rivers in the world. The river flows through the West Kalimantan province. It sits near the geographic center of Maritime Southeast Asia.

The river follows a specific path from the center of the island to the sea. It originates in the Müller mountain range. It also sits at the joint of the Upper Kapuas Range. The river flows through mountainous terrain first. Then it descends into a marshy plain. The elevation drops very little between Putussibau and the delta. Finally, the river discharges into the South China Sea. This creates an extended, marshy delta. The delta has five arms. The widest arm is called the Big Kapuas.

A unique system of lakes sits near the northern shore of the river. These are the Kapuas Lakes. They are connected to the river by many channels. There are many different lakes in this system. These include Bekuan, Belida, and Genali. Other lakes are Keleka Tangai, Luar, and Pengembung. Smaller lakes include Sambor, Sekawi, Sentarum, Sependan, Seriang, Sumbai, Sumpa, and Tekenang. When monthly precipitation exceeds 300 mm, the river overflows. It diverts water to the lakes at rates up to 1,500 m3/s. This process prevents massive flooding in the lower reaches. It also helps fish migrate to the lakes for spawning.

The climate around the river is warm and very humid. The average annual rainfall in the catchment area is 3,666 mm. Annual precipitation can range between 2,863 and 5,517 mm. This creates a very wet environment. The number of rainy days varies between 120 and 309 per year. Temperatures remain stable throughout the year. The river has many different habitats. Some areas have fast-flowing highland streams. Other areas have acidic blackwater forest streams. There are also peat swamps. The river's discharge varies throughout the year. It peaks during the rainy seasons in April and November. During these times, water levels can rise by 1 meter overnight.

The river is home to incredible biodiversity. Scientists frequently discover new species in the dense tropical forests. For example, herpetologists found the Kapuas mud snake between 2003 and 2005. This snake can change its skin color like a chameleon. Many animals live in the trees above the water. These include agile gibbons and Müller's Bornean gibbons. You can also find otters and crocodiles in the river. There are about 300 fish species in the river basin. This is more fish species than any other river basin in Indonesia. One famous fish is the super red arowana.

Fish in the Kapuas have many different roles in the food chain. About 54% of the fish are omnivores. About 36% are carnivores. The remaining 10% are herbivores. Some fish eat only insects, like the Hemirhamphodon pogonognathus.

In the deepest sections, there is no light. One species, Lepidocephalus spectrum, has lost its eyes and pigmentation. This is similar to how cavefish live. Many fish species are economically important for food. These include Pangasius catfish and giant gourami. However, some species like the arowana are now threatened. This is due to habitat degradation and overfishing.

The Kapuas River is vital for transport and the economy. It connects the center of Borneo to the western coast. The river is very deep, reaching up to 27 meters. This allows large ships to carry cargo and passengers. Ships with a 3-meter draft can reach Sintang. Ships with a 2-meter draft can reach Putussibau. This is 902 km from the mouth. People use the river for fishing and logging timber.

Large bridges also cross the water. The Tayan Bridge is the longest bridge in Kalimantan. The river remains a central part of life in West Kalimantan.