Coastal protection project begins for a safer Jakarta

Published: 10 October 2014

The major coastal protection project in Jakarta, Indonesia, began officially on 9 October 2014.

The first pile for the new sea dike went into the ground, marking the start of the work for the NCICD project (National Capital Integrated Coastal Development), which will defend the city from the impacts of sea-level rise and land subsidence. A Dutch consortium led by Witteveen+Bos and Grontmij drew up the Master Plan for this unique water and urban planning project in collaboration with Deltares, KuiperCompagnons, Ecorys and local partners.

Initiated by the Dutch government

The project was initiated by the Dutch government (Netherlands Water Partnership) working together with the Indonesian government. The consortium was asked in 2013 to produce an integrated master plan for the protection of North Jakarta. The plan grants a prominent place to the solution of urban and socio-economic problems. Sources of financing were also identified for the hydraulic engineering structures. The consortium recently completed the master plan, which drew on hydraulic studies conducted by Deltares.

Land subsidence is a serious problem

The first pile has now gone into the ground, signalling the official start of the first phase: the urgent strengthening of the coastal defences. The current flood defences in Jakarta are too low in many places: in October 2013, the water was just 10 centimetres below the top. The northern part of Jakarta is subsiding 7.5 to 17 centimetres a year on average, which constitutes a major risk for the 4 million people who live behind the wall. Land subsidence is exacerbating the potential impact of flooding: the area is getting deeper and could be submerged for longer. There is more economic damage and a risk of higher casualties.

Integrated approach

To protect Jakarta in the future, the consortium adopted an integrated approach to design. With the implementation of the plan, the city will have short- and long-term protection against flooding from the sea. The river and canal system is also being cleaned up, new traffic links are being built, and the city will receive an economic and urban planning boost.