Every year a community in some part of the world is devastated by catastrophic flooding. Communities in coastal regions and land near rivers and lakes are especially exposed, but flooding can happen anywhere it rains. As the floods are getting more serioce, aging dams and levees are sure fail, leading to the kind of devastation that New Orleans saw after Hurricane Katrina.
To resolve this, Japan, England, the Netherlands, and other low-lying countries, have developed new technologies for flood control.
Surrounded by water, the island Japan has suffered devastating floods.
To minimize the flood risk, Japan is building water gates with automatic "aqua-drive" motors. Water pressure creates a force that opens and closes the gates as needed. Because aqua-drive engines do not require electricity to work, they do not suffer in a power-failure that ex. a storm can cause.
In England, engineers developed an innovative movable flood barrier to prevent flooding along the Thames River. Made of hollow steel, water gates on the Thames Barrier are normally left open so ships can pass through. When needed though, the water gates revolve shut to stop water flowing through and to keep the level of the Thames River on a safe level.
The Netherlands has a long time fought the sea. With 60% of the population living below sea level, sophisticated flood control systems are essential. Between 1950 and 1997, the Dutch built the Delta works, (a huge network of dams, sluices, locks and dikes).
One of the more impressive Delta works projects was the Eastern Scheldt Storm Surge Barrier, Oosterschelde as it is also called. Instead of building a normal dam, they constructed the barrier with movable gates.
After 1986, when the Eastern Scheldt Storm Surge Barrier was completed, the tidal height was reduced from 3.40 meters to 3.25 meters.
Another impressive example of Holland's Delta works is the Maeslantkering, or Maeslant Storm Surge Barrier, in the Nieuwe Waterweg waterway between the towns of Hoek van Holland and Maassluis in the Netherlands.
Completed in 1997, the Maeslant Storm Surge Barrier is one of the largest moving structures on Earth. When the water level rises, the programmed walls close and water fills multiple tanks along the barrier. The weight of the water pushes the walls down again and keeps water from passing through.
There is ways to stop flooding .We have the knowledge but what is needed is economic help to those countries who are in need of this sort of technology.