Via Causecast, a video about Green Streets in Portland: "Net Green News reports on how Portland Oregon handles their rainfall in a more natural, sustainable way. Portland receives an annual 37 inches of rain per year... and one way to help prevent overflooding of streets and rivers is to build curbside “green streets,” which are vegetative islands between roads and sidewalks. They plants absorb the water and the soil breaks down the chemical runoff from cars. Net Green News adds that Portland has budgeted $1.4 Billion by the end of 2011 to manage the stormwater, and plans to create an additional 150 green streets in that time, totaling 900 citywide."
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