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Edmonton officials won't release flood map over panic fears

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Staff writer ▼ | April 25, 2016
Edmonton
Than 100 neighborhoods   $2.4-billion project is nowhere to be seen

Edmonton now has more than 100 neighborhood maps that predict, within inches, where water will pool and which basements will likely flood when the city is hit by the storm of the century.

The maps are part of an estimated $2.4-billion project to protect all of Edmonton's vulnerable neighbourhoods against a one-in-100-year flood, Edmonton Sun reports.

But drainage officials worry they'll cause panic if they release the flood maps before plans to fix flooding issues are in place.

"Two or three billion dollars worth of work. That doesn't happen overnight," said Todd Wyman, acting head of utilities infrastructure.

"Instead of giving residents half a solution, I want to give them a whole solution. Because it's more than just an individual homeowner can take on."

The city created the maps using a low-flying plane and stereoscopic photos of the ground. That combination created the precise topographical maps. A computer model compares that with the size of the underground stormwater pipes to see what would happen if a cloud burst dropped something like five centimeters of water in 90 minutes.

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