Commentary

Jan-Feb 2018

WATER WORLD

by Y-Jean Mun-Delsalle

Groundbreaking solutions are being invented by forward-thinking architects to show how coastal cities can become more resilient, viewing climate change as an opportunity to lead the way in waterborne and flood-resistant architecture.


Sea levels are rising to new highs, temperatures are increasing, and floods and storms are getting fiercer and more widespread. Climate change is not just about the risk of floods and drowning, but also the financial cost of damaged property and businesses; as well as how it will redefine which parts of a city are sought after and which are unsafe. A 1-metre sea level rise would reorganise maps and affect financial stability in many of the world’s biggest waterfronts, in cities like New York and Miami, and low-lying areas in Bangladesh, Vietnam and the Philippines. By resolving the issues stemming from climate change and urbanisation, water-based architecture is redefining urbanism. Offering a minimally invasive method of construction, modern floating developments take advantage of coastal zones, rivers, lakes and canals in space-starved cities and provide flexibility as they may be modified, moved and reused until the end of their life cycles when they are recycled. The technologies and innovations required for water-based constructions already exist, but now changing the perception towards floating schemes is key to a more sustainable and safer future that will be able to meet modern-day challenges.

What if instead of fighting rising sea levels, we embrace the water by integrating it into our cities, creating resilient buildings and infrastructure that can deal with extreme flooding and heavy rains?

A leader in floating architecture who sees the potential that water can bring in making cities more resilient and safer, Koen Olthuis and his Amsterdam-based firm Waterstudio (founded in 2003) have been showing the benefits of building on water and how befriending water is a means for survival. Olthuis believes that for centuries, as the climate and sea levels have been relatively stable, the resulting built environments have become too static. Now, with the arrival of uncertainty, cities should be designing with mobility and flexibility, viewing urban water as a chance to upgrade cities rather than a side effect. He states, “We are at the tipping point of entering the next kind of city. We have now the static modern city, but in one or two years from now, we’ll see that the green city will flourish. Then the next city to start will be the smart city with autonomous cars and more data availability—all to create a better city. But we are even one step further. We believe in the rise of the blue city. Cities that are next to, connecting to or have water will start to use that water to create cities that are more flexible, responsive, adaptive and built to change. So if there’s a need for cities that react to the seasons, that are different in winter than in summer, we can do it on water. We can do it better on water than on land because on water, everything is flexible and you can move complete urban components.” Dynamic hydro-cities adaptable to changing needs should already be letting water in and making it part of the city, so that rising sea levels or storms would mean living with a bit more water instead of a sudden shock when conditions go from dry to flooded.

To plan for the future, a resilient city should concentrate on which areas should be kept dry, which can be changed from dry to wet, and which existing waters can be expanded; it is all about fighting water with water, wetting up the city. At-risk cities have to make the choice to become climate refugees or adopt floating technologies and become climate innovators.

NEW YORK CITY

BANGLADESH

LIFEARK
 

To read the complete article, get a copy of the Jan-Feb 2018 edition at our online shop or at newsstands/major bookstores; or subscribe to FuturArc.

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