The Bili-Bili Dam is a

dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aqua ...

located in Gowa Regency,

South Sulawesi South Sulawesi () is a Provinces of Indonesia, province in the South Peninsula, Sulawesi, southern peninsula of Sulawesi, Indonesia. The Selayar Islands archipelago to the south of Sulawesi is also part of the province. The capital and largest ci ...

, Indonesia, on the Jeneberang River, about 30 km from the city of

Makassar Makassar ( ), formerly Ujung Pandang ( ), is the capital of the Indonesian Provinces of Indonesia, province of South Sulawesi. It is the largest city in the region of Eastern Indonesia and the country's fifth-largest urban center after Jakarta, ...

. It provides

flood control Flood management or flood control are methods used to reduce or prevent the detrimental effects of flood waters. Flooding can be caused by a mix of both natural processes, such as extreme weather upstream, and human changes to waterbodies and ru ...

irrigation Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has bee ...

, and

hydroelectric Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...

power generation. The dam was constructed between 1991 and 1998.

Background

In 1981, Bili-Bili Dam was added to the Jeneberang River Comprehensive Development Project. Construction began in 1991 and the dam was completed in 1998. The

weir A weir or low-head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the water level. Weirs are also used to control the flow of water for outlets of l ...

s downstream of the dam and their accompanying irrigation canals were completed in December 2005. The dam's power station was commissioned in 2005 as well. The project was built with funding and cooperation from the

Japan International Cooperation Agency The Japan International Cooperation Agency (), also known as JICA'','' is a governmental agency that delivers the bulk of Official Development Assistance (ODA) for the government of Japan. It is chartered with assisting economic and social gr ...

. It has several purposes to include municipal water supply for the city of

, about 30 km away, and to protect the city from historic flooding. It is designed prevent an estimated 50-year flood. Water from its reservoir also helps irrigate about of rice fields in Gowa and Takalar regencies. The power station has an installed capacity of 19.25 MW and generates about 69,000 MWh of electric power each year. Sedimentation in the reservoir has been a concern since at least 2004. The dam is downstream from Mount Bawakaraeng, which is "prone to landslides." A large landslide in 2004 prompted a request for survey assistance to the Japanese government to determine the possible impact on the dam. An overflow of the dam in 2019 caused a major flooding.

Design

The Bili-Bili Dam is a long and tall rock-fill type. Its reservoir holds of water. Below the dam are three weirs, the Bili-Bili, Bissau and Kampili. They connect to of primary canals and of secondary canals. The Bili-Bili weir covers about of farmland while the Bissau covers and Kampili .

References

External links

{{stack, {{Portal, Indonesia, Water, Renewable energy
Sedimentation in Bilibili Dam and opportunist rice cropping while the lake is at a low levelRiver in Bilibili, Gowa, 1River in Bilibili, Gowa, 2Bilibili map and satellite images at Maplandia
Dams in Indonesia Hydroelectric power stations in Indonesia Dams completed in 1998 Infrastructure in Indonesia Geography of South Sulawesi Energy infrastructure completed in 2005 1998 establishments in Indonesia Reservoirs in Indonesia Japan International Cooperation Agency Jeneberang basin