Air Belanda Indonesia - Netherlands Water Partnership

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Dynamism of Jakarta is also the key to a sustainable solution There are big plans for protecting Jakarta from the water, from both the landward and seaward sides. It is important to work hard now, since the urgency is great. Piet Dircke, lecturer in City and Water at Rotterdam University and employed at Arcadis, takes stock and outlines the next steps. “The dizzying dynamism of Jakarta is one of the causes of the problems, but it is also the key to the solution. Good governance is crucial.” 14 • Air Belanda Indonesia
Masterplan for protecting Jakarta from the sea During his visit to Indonesia in July 2011 State Secretary Ben Knapen announced that the Netherlands was making 4 million euros in development funding available as a contribution to the development of the masterplan for protecting Jakarta from the sea. The masterplan follows on from previous studies into the options for protecting the city from floods. Dutch experts have made an important contribution to this through the Jakarta Coastal Defense Strategy (JCDS) project, and outlined the first potential solutions in September 2011. The masterplanning phase will start in mid-2012. The Dutch contribution will mainly be focused on supporting the central process management and the integrated development of the coastal zone. Meanwhile the Indonesian government has energetically moved ahead with preparations for this masterplanning phase on the basis of the JCDS results. It is anticipated that a Dutch consortium can start work at the end of summer 2012 following a tendering process. The looming threat is that the densely populated north of the city will one day be several metres below sea level. An unimaginably complicated system is needed in order to protect Jakarta from the water that threatens the city from two sides. Thirteen rivers that bring their water to the city, the immense amounts of rain that can fall and can be insufficiently captured in more elevated areas, the threats from the sea, the subsiding ground: it all requires perfect flood management. Piet Dircke says: “The solution is to carry out a large, coherent delta plan with a large dike. That means building, but then also managing. There is a real risk that the inner lake which will develop when the dike is built will become polluted in no time. That means that you need to tackle water treatment straightaway and that there must be a sound programme of waste removal. Otherwise the water cannot leave the city.” Brick walls The Dutch Jakarta Coastal Defence Strategy study into the protection of Jakarta from the water opened many authorities’ eyes to the problems. Everyone is pleased that the problem has been clearly set out. Dircke says: “People within the government also started looking for themselves. That was very useful, since you can feel the physical threat: brick walls behind which the water is chest-high. It gurgles under your feet - that cannot be sustained. There is therefore now a great preparedness to tackle the next phase together. The biggest challenge is how to move from problem definition towards a solution. And also, how to move from an engineering model to a governance model?” ‘One of the biggest challenges for Jakarta is to integrate public and private efforts’ Subsidence is a silent threat At the heart of the problem lies the fact that the ground beneath Jakarta is subsiding, and will continue to subside. Dircke says: “The authorities in Jakarta also recognise that all those big measures can only really be effective if deep groundwater extraction can be stopped, which is the main cause of the subsidence. It’s sinking by up to 25 centimetres a year: an unprecedented rate. At the same time we know that cessation will only happen if there is a serious alternative. The supply of piped water is currently very uncertain, both in terms of availability and in terms of quality. Only when that alternative is available can you enforce the cessation of groundwater extraction with laws and regulations.” watersafety • 15
Page 1 and 2: Air Belanda Indonesia Cooperation b
Page 3 and 4: Foreword Water is an important natu
Page 5 and 6: Colophon Air Belanda Indonesia is a
Page 7 and 8: included the creation of the Jatilu
Page 9 and 10: Continuation and expansion The new
Page 11 and 12: Partnership Jakarta and Rotterdam o
Page 13: Waternet focuses on complete water
Page 17 and 18: ‘Banjironline’ Flood app The ma
Page 19 and 20: Drinking with the wind Living on th
Page 21 and 22: ‘We are working with no fewer tha
Page 23 and 24: Dry feet first, then pay In urban d
Page 25 and 26: Capacity building through the relat
Page 27 and 28: Mathieu Pinkers is Executive Direct

Air Belanda Indonesia - Netherlands Water Partnership

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