Colorado’s increasingly impenetrable cities
In Colorado’s 10 largest metro areas (by acres), impervious surfaces, such as roads, buildings and parking lots, increased by an average of 83.7 percent from 1974 to 2012.
In Colorado’s 10 largest metro areas (by acres), impervious surfaces, such as roads, buildings and parking lots, increased by an average of 83.7 percent from 1974 to 2012.