July 27, 2017
On July 27, the Japan International Cooperation Agency (JICA) signed a Record of Discussions with the Government of Indonesia in Jakarta, the capital city, for the Project for Promoting Countermeasures against Land Subsidence in Jakarta, technical cooperation for development planning.
The purpose of the project is to establish a planning and implementation framework and to draft an action plan to promote countermeasures against land subsidence in Jakarta, and to strengthen the capacity for planning and implementing countermeasures against land subsidence in Jakarta.
Since the 1970s, land subsidence has occurred in major Asian cities, including Jakarta, along with rapid development and economic growth. Severe land subsidence has occurred in the north part of Jakarta, the target of the project, due to the excessive abstraction of groundwater. In some areas, the ground has subsided four meters since 1970, and two meters or more since 2000, increasing the damage caused by flooding and inundation and affecting people’s lives. There is a risk of damage to the transportation infrastructure in areas where bridge girders have sunk or otherwise been impacted. As extreme rainfall events and elevated sea levels are predicted to result from the effects of climate change, there are concerns of an increased risk of damage due to land subsidence. From a perspective of advance investment in disaster risk reduction, measures to mitigate land subsidence are a priority.
As an initial step for those measures, accurate data concerning land subsidence and groundwater in Indonesia is required. Furthermore, a strong initiative to coordinate the partnership between the government agencies that must carry out the measures is also required to ensure that the progress is made. Through the project, JICA will support the processes that the Government of Indonesia will carry over three years, including establishing a system for collecting, analyzing and managing pertinent data, investigating effective land subsidence measures, and awareness raising among residents.
During the period of high economic growth in Japan, Tokyo also experienced land subsidence of four meters and more in some areas, but it was mitigated in the 1970s by ensuring alternative water source primarily for industrial use and restricting groundwater abstraction. Both Tokyo and Jakarta are megacities with populations exceeding 10 million people and they share many similarities such as the social environment and the forms of rivers and discharge channels. It is thus expected that such past experiences of Japan will be utilized in the project to greatly contribute to land subsidence measures in Jakarta.
It will be the 60th anniversary of the establishment of diplomatic relations between Japan and Indonesia next year. Japan has a long history of cooperation with Indonesia, and JICA will use Japan’s knowledge and experience to continue contributing to development in Indonesia.
|Country||Republic of Indonesia|
|Project title||Project for Promoting Countermeasures against Land Subsidence in Jakarta|
|Planned implementation period||October 2017 to September 2020|
|Executing agency||Directorate General of Water Resources, Ministry of Public Works and Housing|
|Target region, facilities||Special Capital Region of Jakarta|
|Specific project details (provisional)|| Investigating the current status of land subsidence and groundwater
Analyzing measures to reduce the amount of groundwater abstracted and risks from water damage related to land subsidence
Evaluating the social costs and other effects of land subsidence
Implementing an educational campaign concerning land subsidence
Creating an action plan for land subsidence measures, selecting and piloting priority projects, and creating an organization