The Bili-Bili Dam is located in

Gowa Regency Gowa (''Makassar language : '') is a regency in the province of South Sulawesi, Indonesia. It has an area of 1,883.33 km2 and a population of 652,329 at the 2010 census, increasing to 765,836 at the 2020 census; the official estimate as at mi ...

South Sulawesi South Sulawesi ( id, Sulawesi Selatan) is a province in the southern peninsula of Sulawesi. The Selayar Islands archipelago to the south of Sulawesi is also part of the province. The capital is Makassar. The province is bordered by Central Sula ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

, on the

Jeneberang River The Jeneberang ( id, Sungai Jeneberang) (Historical Name : ''Garassi River'') is a river of approximately 75 km in length in the south-western half of the island of Sulawesi, Indonesia. The catchment has an area of 760 square kilometers. Hy ...

, about 30 km from the city of

Makassar Makassar (, mak, ᨆᨀᨔᨑ, Mangkasara’, ) is the capital of the Indonesian 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, Surabaya, Med ...

. It serves several purposes to include

flood control Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water level ...

irrigation Irrigation (also referred to as watering) is the practice of applying controlled amounts of water to land to help grow Crop, crops, Landscape plant, landscape plants, and Lawn, lawns. Irrigation has been a key aspect of agriculture for over 5,00 ...

and

hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...

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 river 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 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 growth in developing countries, and the promotion of international co ...

. It has several purposes to include

municipal water Tap water (also known as faucet water, running water, or municipal water) is water supplied through a tap, a water dispenser valve. In many countries, tap water usually has the quality of drinking water. Tap water is commonly used for drinking, ...

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