The great water harvest

It is little news that the desert Southwest is running low on water these days. More and more people moving in, shrinking aquifers, and a drier Colorado River – all of these factors have lead to real concerns about the future of water in the region. As a response, the City of Tucson has adopted one of the more progressive laws with regards to water conservation, or, in their case, to water harvesting. As of June 1, 2010, all new commercial development plans submitted to the City must include a water harvesting plan, which must outline how the site will harvest rainwater to supply 50% of the site’s irrigation needs.

Target has gotten a head start on the whole affair and has retrofitted its Super Target on Oracle Boulevard with water cachement areas (shown above), swales, and a plethora of desert-friendly plants and trees. Not a swath of turf grass is to be seen on the site.


The asphalt parking lot slopes towards permeable planting areas instead of towards storm drains

We are of course still left with the perennial problem of the big box store and the enormous amount of urban surface area and asphalt it requires to begin with – not to mention a whole host of problematic urban design and pedestrian issues this building type creates. . . but that, I am afraid, would open up a whole other can of worms and is perhaps better left for another post, for another day. In the meantime, let us bask in one small baby step towards a mildly greener tomorrow.

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