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BANJIR KELAPA GADING

Netherlands, South Korea in Charge of Jakarta Sea Wall Study

Jakarta. The Netherlands and South Korea have pledged a total of $19 million in grant funding to help Indonesia conduct a study for the second and third phase of its sea wall project off the coast of Jakarta.

South Korea is setting aside $9.5 million for research on undersea currents and soil structure for the project, dubbed National Capital Integrated Coastal Development (NCICD).

The Dutch, meanwhile, have allocated 8.5 million euros ($9.5 million) for a follow-up study, Indonesia’s Public Works and Housing Ministry said in a statement released on Thursday.

Officials from the three countries signed a letter of intent for the joint study on Thursday.

The South Koreans are set to begin their part by the end of this month, said Lucky EkoWuryanto, deputy for infrastructure at the Coordinating Ministry of Economic Affairs.

The study is expected to reach conclusion by 2017, before the government has to decide whether to continue the sea wall project.

The second and third phase of the  massive endeavor will create a huge reservoir in the north coast of Jakarta, acting as a flood control system and water source for the surrounding population.

The Indonesian government, with help from the Netherlands, started construction to strengthen existing retaining walls on the coast last October as part of the first phase of NCICD.

Source: jakartaglobe.com

JktPost

Dutch firms eye water, port projects

Dutch firms eye water, port projects

The Jakarta Post, Jakarta | Business | Thu, April 03 2014, 7:26 AM

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A Dutch delegation headed by Infrastructure and Environment Minister Melanie Schultz van Haegen is currently on a visit to the country to explore the possibility of investing in the National Capital Integrated Coastal Development (NCICD), which is intended to protect Jakarta from the sea and facilitate an integrated coastal development possible.

The delegation includes 18 companies and organizations from the water and port sectors such as Arcadis, BAM, Boskalis, Deltares, City of Rotterdam, Grontmij, IHC Merwede, KNMI, Kuiper Compagnons, Netherlands Water Partnership, Port of Rotterdam, Royal Haskoning DHV, Simavi, STC Group, Van Oord, Witteveen and Bos.

Schultz van Haegen said on Wednesday the delegation visited Indonesia to explore the opportunities to be involved in the construction of a giant sea wall in Jakarta Bay and the reclamation of the coastal area in Jakarta as part of the NCICD programs.

She presented the draft for the Master Plan of the NCICD program to Public Works Ministry Djoko Kirmanto during a business forum in Jakarta on Wednesday.

http://www.thejakartapost.com/news/2014/04/03/dutch-firms-eye-water-port-projects.html

Dutch Minister of Infrastructure & Enivronment1

Details Dutch seawall and development plan for Jakarta Bay well received by Indonesian authorities

Details Dutch seawall and development plan for Jakarta Bay well received by Indonesian authorities

Posted on 3 April 2014

Dutch minister Melanie Schultz van Haegen presented the draft version of the 1400 page Dutch-Indonesian National Capital Integrated Coastal Development (NCICD) master plan in Jakarta on April 2.

The document gives an assessment of the financial, technical and social-economic feasibility of the plan, both for the short and long term flood protection of Jakarta. This includes the construction of a seawall at Jakarta Bay, in combination with land reclamation for development of new industrial and housing areas.

The total estimated cost is 24.7 billion US dollars.

In the presence of Dutch minister Schultz van Haegen (background) and Indonesian minister of public Works, Djoko Kirmanto (foreground), the details of the NCICD master plan were discussed at an international business forum on coastal development.

 Both the Indonesian government and the Jakarta city authorities reacted positively on the detailed master plan.

Garuda-shaped urban development
In November last year Dutch minister Mark Rutte launched the idea of such a combined flood protection-land development plan that was presented in the form of Indonesia’s national symbol, the Great Garuda.

The past few months Dutch and Indonesian experts have been working on the details of this plan, involving a Dutch consortium headed by consultancy firms Grontmij, Witteveen+Bos with subconsultants Dutch research centre Deltares, architecture firm KuiperCompagnons and consultancy firm Ecorys.

 The final version of the master plan is expected this summer.

 Land subsidence and population growth
Jakarta is facing significant challenges. The rate of land subsidence is some 15 cm per year, due to groundwater extractions, and an increasingly larger section of the city is below sea level. Heavy rainfall combined with years of overdue maintenance on flood defences increases the possibility of flooding. Increasing urbanisation is putting enormous pressure on the drinking water supply.

 “In Jakarta, the speed at which spatial planning and water management must be adapted to the growing population and economy is unparalleled. I am proud to present this plan to protect Jakarta here today. I have every faith in the cooperation between our two countries”, minister Schultz said at the presentation.

Strengthening of the existing sea defences combined with redevelopment of the slum district on the existing dyke.
(illustration: KuiperCompagnons)

Highly ambitious plan
In 2008, Indonesia called on the Netherlands to assist in protecting Jakarta from high water. Indonesian and Dutch experts from the public and private sectors and research institutions worked on the Master Plan for National Capital Integrated Coastal Development (NCICD) for six years.

Minister Schultz called the plan highly ambitious: “It is on schedule, in line with the desire of the Indonesian government, to speed up the project.”

Water safety and water quality
The draft master plan not only offers an integrated solution for water safety but also for other problems in the city, including water quality. Only 2% of the whole of Jakarta is connected to a sewer system, and much waste is simply dumped into the rivers. Experts have joined forces to lay down a viable strategy aimed at massively improving the quality of the water in the short term, in such a way that it can serve as a new source of drinking water for the city, in the future.

Trade mission
From 30 March to 4 April, Minister Schultz van Haegen of Infrastructure and the Environment is leading a trade mission to Jakarta and Surabaya. Eighteen Dutch companies and organisations from the water and port sectors are accompanying the minister.

They hope to contribute further to the new hydraulic engineering and port development projects in Indonesia.

This news item is based on the press release from the Dutch ministry of Infrastructure and environment and Grontmij.


Read more on this site
● 
New Garuda shaped master plan gives Jakarta new perspective on coastal city development, 22 November 2013
● Indonesian students strongly encouraged to contribute new ideas for Jakarta Bay, 26 November 2013
● Jakarta flooding put new flood information system unexpectedly to the test, 1 February 2013
● Only long term flood defence plan can put Jakarta floodings to a halt, 18 January 2013


More information
Witteveen+Bos
Jakarta, Indonesia
+62 21 719 12 82
www.witteveenbos.com

National Capital Integrated Coastal Development program (NCICD)
www.ncicd.com

 

Reklamasi1

Dutch Minister Presents Coastal Protection Master Plan in Jakarta

Dutch Minister Presents Coastal Protection Master Plan in Jakarta

Posted on Apr 2nd, 2014 with tags Asia, coastal, dredging, Dutch, Jakarta, master, Minister, News, plan, presents, Protection.

 

Minister Schultz van Haegen, the Dutch Minister of Infrastructure and the Environment, will be presenting the draft Master Plan for the National Capital Integrated Coastal Development (NCICD) programme during her trade mission to Indonesia.

The Master Plan offers a long-term solution to flooding in North Jakarta, and was drafted in the course of the past few years by the Dutch companies Grontmij and Witteveen + Bos.

The problems in Indonesia are very urgent: extreme land subsidence means that seawater flooding will represent a real threat to more than 4 million residents of North Jakarta, within the next few years.

As explained by Minister Schultz, ‘Huge efforts will be needed to protect the population of Jakarta against the flood risk. The Netherlands and Dutch businesses and centres of expertise are happy to offer assistance. Water offers new opportunities to strengthen the ties between our countries.’

Water safety and water quality

The Master Plan not only offers an integrated solution for water safety but also for other problems in the city, including water quality.

Only 2% of the whole of Jakarta is connected to a sewer system, and much waste is simply dumped into the rivers. Experts at Grontmij, Witteveen+Bos and RoyalHaskoningDHV have joined forces to lay down a viable strategy aimed at massively improving the quality of the water in the short term, in such a way that it can serve as a new source of drinking water for the city, in the future.

Improved infrastructure

Another element of the master plan involves improvements to the city’s infrastructure.

To reduce traffic burdens in the city, a series of toll routes and a public transport network will be created. Longer term plans involve the construction of a large dyke to seal off the Bay of Jakarta. Behind the dyke, a large water retention lake will be created, in which peak discharge flows from the city can be temporarily stored before being pumped into the sea.

In addition, between 1,000 and 4,000 hectares of extra land will be reclaimed, thereby allowing the city to expand. This suppleted land will take on the iconic shape of the Great Garuda, the patron bird of Indonesia.

As explained by co-team leader of the Master Plan team and Programme Manager Delta Technology at Grontmij, Alex Hekman, On the basis of this presented draft, extensive dialogue will take place over the next few months with the Indonesian government. The definitive Master Plan is expected to be ready on 1 August this year. We at Grontmij are proud of the opportunity to work on this ambitious yet essential plan, together with the other partners in the consortium. It offers proof of the advantages of working together rather than doing it alone, in tackling overseas projects. The plan also ties in perfectly with the core skill of Grontmij to combine spatial and water-related projects in an urban environment.’

Minister Schultz and the commercial mission

Minister Schultz van Haegen, Minister for Infrastructure and the Environment, is heading the commercial mission to Indonesia between 30 March and 4 April. The delegation will be visiting Jakarta and Surabaya.

The visit is a follow-up to the mission to Jakarta headed by Prime Minister Rutte in November 2013, and has the declared aim of intensifying existing cooperation between the two countries in respect of water management and port development.

Press Release, April 2, 2014

http://www.dredgingtoday.com/2014/04/02/dutch-minister-presents-coastal-protection-master-plan-in-jakarta/

 

Flooding in Jakarta

Mark Caljouw, Peter J.M. Nas, Pratiwo

Abstrak

Banjir merupakan peristiwa yang akrab bagi kota-kota di Pantai utara Jawa. Dari tahun ke tahun banjir selalu terjadi menimpa daerah perkotaan dan pedesaan. Kondisi banjir, bukan hanya masalah kesehatan dan drainase kota yang harus dibahas, tetapi juga bagaimana banjir tadi menimbulkan berbagai masalah sosial.
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Land-Subsidence

Penurunan Permukaan Tanah di Pesisir Jakarta

Definisi penurunan tanah adalah salah satu fenomena deformasi permukaan bumi secara vertikal di samping terjadi fenomena uplift. Penurunan tanah ini dapat berlangsung dalam waktu yang lama, sehingga jika ini terjadi terus menerus, daerah-daerah yang mengalami penurunan tanah akan mengalami dampak dari penurunan tanah itu sendiri, sedangkan penurunan tanah itu sendiri tidak merata di setiap daerah. Penurunan tanah khususnya di wilayah DKI Jakarta ini terbesar didominasi di Jakarta bagian utara. Setiap tahunnya terjadi penurunan 5 s/d 10 cm, sebaga akibatnya 40% dari Jakarta berada dibawah permukaan laut.

Salah satu penyebab turunnya tanah di Jakarta adalah eksploitasi air tanah yang berlebihan. Sejak awal abad ke-20, penduduk Jakarta memanfaatkan air tanah untuk memenuhi kebutuhan mereka, kebutuhan air minum, maupun kebutuhan industri pabrik. Namun seiring waktu, kebutuhan air meningkat, sehingga pemanfaatan air tanah pun juga meningkat. Peningkatan pemanfaatan air tanah menyebabkan turunnya tanah di Jakarta. Peningkatan pemanfaatan air tanah di Jakarta terjadi karena beberapa faktor, yaitu urbanisasi dan padatnya penduduk Jakarta, serta aktivitas industri.

Penurunan permukaan tanah (subsidence) akibat ekploitasi air tanah Jakarta yang berlebihan, menyebabkan posisi Jakarta terhadap laut makin rendah. Kondisi ini diperburuk dengan kecenderungan meningkatnya muka air laut sampai hampir di sebagian besar kota-kota dunia akibat pemanasan global (global warming). Penurunan daratan di Ancol dan meningkatnya risiko terjadinya banjir dan genangan ini dapat dijadikan salah satu indikator tentang Jakarta sedang menuju tenggelam.

Penurunan muka tanah memberikan dampak negatif secara langsung di sekitar wilayah terdampak, seperti menyebabkan banjir dan rob (tidal flooding) di daerah pantai (coastal zone), kerusakan pada gedung-gedung dan rumah-rumah, serta infrastruktur seperti jembatan dan jalan, bahkan dapat menyebabkan meledaknya pipa gas. Penurunan muka tanah juga mempunyai implikasi terhadap kehidupan sosial seperti berkurangnya kualitas hidup dan lingkungan (kondisi sanitasi dan kesehatan) di wilayah terdampak. Penurunan muka tanah merupakan salah satu bencana yang berpotensi menimbulkan kerugian ekonomi yang cukup besar. Selain kerugian ekonomi langsung (direct losses), penurunan muka tanah juga menyebabkan kerugian ekonomi secara tidak langsung (indirect losses) seperti berkurangnya pendapatan, hilangnya mata pencaharian penduduk, guncangan bisnis, bahkan menurunnya laju pertumbuhan ekonomi.

bkt

Jakarta Tenggelam

Luas Jakarta 65.000 Ha; 40 % (24.000 Ha) daratan rendah di bawah muka laut pasang 1 s/d 1.5 m; Dari 40 % tersebut, baru 11.500 Ha yang sudaH dilayani dengan sistem Polder;

Daerah tangkapan hujan yang mempengaruhi Jakarta meliputi Bopunjur (Bogor, Puncak dan Cianjur) dengan luas 85.000 Ha;

Air dari hulu mengalir melalui 13 sungai/kali menuju laut melewati Jakarta;

Sebagian ruas Ciliwung telah direvitalisasi, namun beberapa kali dan ruas kali belum dinormalisasi seperti kali Grogol, kali Krukut, kali Sunter bahkan pada bantaran kali dijadikan tempat hunian (bangunan liar) sehingga terjadi penyempitan penampungan; Water ratio wilayah Prop.DKI Jakarta baru mencapai 2,41 % ( target 2010: 4,92 % );

Pembangunan dan perubahan tata guna lahan di Bopunjur dan Jabodetabek yang sangat pesat menyebabkan terjadinya penambahan debit air sungai melampaui kapasitas maksimumnya (menambah run-off air );

Akibat ekploitasi air tanah dalam yang berlebihan dan beban bangunan bertingkat menyebabkan terjadinya penurunan tanah (land subsidence), yang menambah daerah rawan banjir.