Quote:
Originally Posted by KMcK
Bedford Place was built on the Sackville River flood plain in the 1970s. It was filled in and levelled to be above expected flood levels for back then but we can see that is inadequate now and will be increasingly so in the future.
Had the flood plain not been filled in the flooding at other points along the river might not have been so bad. That's what flood plains are for. This would be a good time to remove the mall and rehabilitate the flood plan.
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I'm not sure if this would even mitigate future problems, as with all the development that has happened upstream, there would be much more runoff today than there ever was pre-1970s. Toss in a 100-year storm (which might end up being a 10-year storm in the future... who knows?), and the flood plain is just a holding pond for more water before flooding occurs, since the real problem is that flow rate is exceeding the capacity of the river to drain into the Bedford Basin.
I can't help think that, moving forward, an engineering solution is the way to go, unless you just decide to remove all the retail and residential (IIRC, something like 4 apartment buildings required rescuing of residents during the flooding) along the Sackville river, because they have the potential to flood during an extreme storm. An engineering solution would require time and money, but surely the costs would offset future costs of being reactive vs proactive.
Not to mention that, even though we are focusing on the Bedford Place Mall, flooding was widespread in all the areas of the province that received the largest amounts of rain. As we continue to welcome record numbers of new residents into the province, I'm not sure that removing development is the direction in which we should be heading.
In support of this, Hurricane Beth dumped 296mm of rain on Nova Scotia in August of 1971, resulting in severe flooding in downtown Dartmouth (Info + video:
https://historydartmouth.blogspot.co...uth-flood.html. Rather than decide to remove development in downtown Dartmouth, the city engineered a stormwater management system to deal with future storms of this magnitude, and in recent years
have replaced the system with one of equal or greater flow capacity, during the daylighting project.