it is easy to see how urbanization shapes the environment, particularly
in peripheral areas were large suburban developments may consume
hundreds of acres per year. But the impacts of urbanization begin
early. Sometimes, the period of initial urban settlement produces
the most radical changes in watersheds as tracts of land are cleared
for the first time. Encroachment continues long beyond initial
settlement as an almost continuous process. These maps of the
development of a piece of campus on the University of Colorado
show how the area of impermeable surfaces increases through time.
Please note that the red and grey stripes constitute both paved
ground and buildings.
animation by Andreas von der Dunk