For those of you who do not live in Vietnam at the moment, a heavy rain fell on Hanoi since yesterday 7/13/10 at 8am lasted for 3 hours and left the 1000-years-old city submerged in 0.5 meter of water. Many businesses are on hold, all your favorite street restaurants are taking losses, people postpone their daily trips, and kids paddle their mini-boats through town with oblivious joy. Many locals are worried about the fate of the 1000-year birthday celebration of the capital city of Vietnam. Much investments are already in place, but now economic profit anticipations are disappearing because of flash floods like these.
Floods, unfortunately, are very common in Vietnam. Every year, hundreds of thousands of Vietnamese are affected by blood and up to a thousand lives are lost causing huge grieves and financial losses. This is unnecessary because floods are preventable natural disasters. The experts are doing their part as many urban planning agencies in Vietnam are collaborating with many international consultant firms. But let us all understand the basics of the flood problem in Vietnam by looking at the graphs:
1) The amount of people affected and deaths caused by flood in Vietnam in the past 20 years. The level describes the amount of people affected and the size of the circles represents the death tolls.
And here is the list of the worst natural disasters in Vietnam:
To understand why flash floods create such a major problem in Vietnam, let’s look at the drainage system of Hanoi:
As can be observed, Hanoi main water draining pipe is shared among many different systems. And with the rapidly increasing urban population, the usages of the residential and commercial properties also multiply at a fast pace and leave less draining capacity left for the rains and storms.
There are much to be done to upgrade the current infrastructures in Vietnam, but the hope is that more studies can be done for better city planning for the future metro centers in Vietnam. Maybe you can be one of those urban planners and architects!