Quote:
Originally Posted by kw5150
Yes, if only calgary could do a bit more of this. Bio-swales privide an essential water infiltration component to every development instead of draining everything right into the storm drains and then into the bow river. Ditches are so fugly and I am glad some intelligent cities are finding new approaches to rain catchment instead of Calgary's close-minded approach to environmentalism. Every bit helps. Portland, Vancouver, Nanaimo, Victoria and seattle are really breaking ground with these bio swales and their city pride is quite apparent. We would have to use different species in our bioswales (which we do in the few we have) but the idea is the same. Thanks for posting that.
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Ummm, KW5150, you do realise that Calgary LEADS all North American cities in the area of treating surface drainage before it enters the natural ecosystem, right????
And you must certainly be aware that in Calgary over 50% of all surface drainage (rainwater, surface runoff, storm sewer collection, etc) goes through a primary filtration system whereas no other city (that I'm aware of) in North America filters even 25% of its surface runoff.
Swales look nice and can be great for PR on a small "green" projects (google literature from Cdn Assoc on Water Quality for more details) but are not ideal for retro fit in an urban core (land availability) nor large scale SFH districts.
Anyway, since Calgary has the best treatment of water management in Canada (and NA) I would say that our pride is as good as those with the landscaped ditches!
Edit: Sorry for going OT, guess this should be moved to the "Swales: Conduits of conscience or straits to hell" thread!