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ARCADIS Presents Conceptual Design for Storm Surge Barrier to Protect the New York Metropolitan Area

April 1, 2009

AMSTERDAM, April 1 /PRNewswire/ — ARCADIS (EURONEXT: ARCAD), the
international design, consulting, engineering and management services
company, today announced that it has provided an idea of what a storm surge
barrier aimed at protecting the New York and New Jersey Metropolitan Region
from severe coastal flooding might look like. The barrier is situated in the
Verrazano Narrows, connecting the Upper New York Bay with the Atlantic Ocean.
The ideas were disclosed in a presentation as part of a New York conference
‘Against the Deluge: Storm Surge Barriers to Protect New York City.’

(Photo: http://www.newscom.com/cgi-bin/prnh/20090401/343043 )

The barrier will be 4800 feet in length. A large sliding sector gate of
860 feet allows the biggest ships to pass the barrier during normal weather
and can be closed during a storm surge. The barrier allows sufficient tidal
flow in the New York Harbor Bay via the sliding gate and 18 lifting gates,
which is important from an ecological point of view.

As a consequence of climate change and rising sea levels, New York might
become more vulnerable to flooding. Parts of the New York and New Jersey
Metropolitan Area (20 million inhabitants) are below the maximum water level
of a probable storm surge, resulting from North East storms and hurricanes.
Such a surge would cause significant damage to real estate and economic
activities in New York. Although the area is not below sea level, the risk of
human casualties is also present, as tunnels and the subway systems may
flood. The proposed barrier in the Verrazano Narrows, combined with two other
barriers at the East River and the Arthur Kill will minimize the danger of a
storm surge entering from the Atlantic Ocean into the Upper New York Bay. The
costs of the Verrazano Barrier, roughly estimated at 6.5 billion dollars, may
prove economically preferable to accepting the chance of flooding.

The protection of urbanized delta areas, like the New York and New Jersey
Metropolitan Area will be one of the major societal issues of the 21th
century. More than half of the world’s population lives in delta areas. Piet
Dircke, global director water management of ARCADIS says: “Those areas are
increasingly vulnerable to flooding, due to climate change. ARCADIS has a
longstanding experience in urban delta flood protection. The company has its
roots in the Netherlands, a country of which more than half is below sea
level. The Dutch have an outstanding knowledge and centuries of experience in
protecting their citizens against floods. The proposed conceptual design of
the Verrazano Narrows barrier is based on this knowledge. Over time ARCADIS
has been involved in the reinforcement of more than half of the river dikes
during the last decades and realization of some flood gates in the
Netherlands
. At the moment ARCADIS is involved in several projects in the
Netherlands
aimed at upgrading the Dutch coastal flood protection system. In
New Orleans ARCADIS is also largely involved in the upgrading of the
individual set of levees, gates and barriers into a hurricane protection
system, an integrated system of dikes, levees, flood gates and pump stations.

Video Link:

A video can be downloaded via the link below illustrating ARCADIS’ idea
of a storm surge barrier:

http://www.dpi.nl/nl/download/projects/QXJjYWRpc193YXRlcmtlcmluZw

About us:

ARCADIS’ international water experts create value in water management,
flood protection, delta technology, hydraulic and coastal engineering.
Protecting against flood risks, safeguarding a good and healthy water
quality, developing coastal zones, ports and other water-related systems:
ARCADIS offers innovative, integrated solutions for many water and climate
change related issues. ARCADIS’ dutch heritage is a guarantee for state of
the art solutions.

ARCADIS is an international company providing consultancy, design,
engineering and management services in the field of infrastructure,
environment and buildings. We aim to enhance mobility, sustainability and
quality of life by creating balance in the built and natural environment.
ARCADIS develops, designs, implements, maintains and operates projects for
companies and governments. With more than 14,000 employees and over EUR 1.7
billion
in gross revenue, the company has an extensive international network
that is supported by strong local market positions.

Visit us on the internet at: http://www.arcadis-global.com

SOURCE Arcadis N.V.


Source: newswire



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