Balikpapan is a city by the sea. 

Balikpapan is a city by the sea. 
The land here is very hilly. Most of the city is not flat. 
It is a very warm place. It rains a lot during the year. The weather stays mostly the same.
The city is known for oil. 
Many people visit the busy port. It is a grand place to see.
Balikpapan is a busy seaport city in Indonesia. 

Most of the land here is hilly. Only a small part of the city is flat. This flat land is mostly near the coast. The weather is warm and wet all year. It is a tropical rainforest climate. This means there is no dry season. It rains often, and the heat stays about the same.
Balikpapan is known as the "Oil City." 

Balikpapan is a busy seaport city in Indonesia. 


The land in Balikpapan has a very specific shape. Most of the area is made of hills, which covers about 85 percent of the land. Only a small amount, about 15 percent, is flat ground. This flat land is mostly found near the coast or around the hills. The ground is made of sand and soil that can wash away easily. 

Long ago, Balikpapan was just a quiet fishing village. 

The city has seen many difficult times during wars. During World War II, the Empire of Japan occupied the city in 1942. There were big battles in 1942 and again in 1945. These battles caused a lot of damage to the oil stations and the seaport. 
Today, Balikpapan is a large and modern place. It is often called the "Oil City" because of its history. It is also known as the "City of Believers," which stands for clean, magnificent, and comfortable. 


Balikpapan is a major seaport city located in East Kalimantan, Indonesia. It sits on the eastern coast of the island of Borneo. The city is situated on the eastern side of Balikpapan Bay. 

The city's economy is driven largely by the petroleum industry. In 2016, the city's Gross Domestic Product (GDP) was estimated at Rp 73.18 trillion. This makes Balikpapan the largest city in Kalimantan by GDP. The Port of Semayang serves as a critical maritime gateway. It is the second busiest seaport in East Kalimantan, after the port in Samarinda. For air travel, the city is served by the Sultan Aji Muhammad Sulaiman Sepinggan Airport. 
The topography of the region is primarily defined by hilly terrain. Approximately 85 percent of the land consists of hills. Only about 15 percent of the area is flat land. This flat land is mostly located along the coast or surrounding the hilly areas. The soil is often composed of yellow-reddish podsolic soil, alluvial deposits, and quartz sand. This specific soil composition makes the area highly prone to erosion. 
Balikpapan experiences a tropical rainforest climate, known scientifically as Köppen Af. This means there is no distinct dry season. The weather remains consistent throughout the year with little variation. Average temperatures stay nearly identical across all months. The sea temperature also remains warm, averaging around 28.4 to 29.6 degrees Celsius. 
The history of Balikpapan began as a small Buginese fishing village in the 19th century. A major turning point occurred on February 10, 1897. This was the date of the first oil drilling in the area. This date is now celebrated as the city's anniversary. In 1907, the Bataafsche Petroleum Maatschappij (BPM) established its headquarters there. The company brought in skilled engineers and managers from overseas. This influx of professionals and multinational companies caused a significant economic boom. 
World War II brought significant conflict and destruction to the city. In 1942, the Empire of Japan occupied Balikpapan. The city was targeted by Allied forces during the first Balikpapan Battle in 1942. A second battle occurred in 1945. These conflicts heavily damaged critical infrastructure. The oil refinery stations and the seaport were completely burned to the ground. 
In 1965, the Indonesian state-owned company Pertamina took control of BPM. This transition shifted ownership of oil exploration activities to the Indonesian state. Pertamina eventually opened its East Borneo headquarters in Balikpapan. This helped the city emerge as a revitalized center for petroleum production. Today, the city is known by nicknames like the "Oil City." It is also called "Kota Beriman," which is an acronym for clean, magnificent, and comfortable. 
Environmental challenges currently affect the local ecosystem. The Wain River Protection Forest is a vital water catchment area. However, this forest is shrinking due to encroachment and illegal logging. Some areas have seen forest conditions drop to only 63 percent. Coal mining in nearby areas like Paser also disrupts the ecosystem. This damage leads to increased flooding and landslides during heavy rains. 

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