Quote:
Originally Posted by Slava
So if we build the tunnel is there not an issue of spending a pile of money to save Calgary while doing nothing for communities downstream? Like it's great if this works for us, but the flooding just gets pushed on down the line and those communities have to find their own way to deal with it, right?
The one thing I like about the dry resevoir(s) is that in years of drought we would have some reserve irrigation. The problem is too much water sometimes, but it could almost as easily be not enough water.
|
A dry reservoir really does nothing to stop flooding. To get a good idea of the volume flowing at the peak flow it is the equivalent to the Olympic sized lap pools at Talisman centre (~2500 cubic meters) flowing down the elbow every 2 seconds.
After an hour of peak flow you'd have to be able to hold 1,800 of these pools somewhere. The volume is simply too much to consider a dry pond for.
The best prevention method is conveyance and directing it to a different point in the bow would not increase the flow downstream. It would just divert it to a different point.