What is Urban Sprawl?

Urban sprawl is.....
 
Urban sprawl is a big problem around the world, but it can be an even bigger problem when it is found in a place that is extremely sensitive to man-made alterations.  Islands happen to be just that sort of place.  They get their water from the only source that is available; rain.  When that rain cannot penetrate the ground because of a roof or sidewalk or road that diverts it, the residents can be affected by the effects of drought.