Explosive Urban Growth Is Mapped

The 16 metropolitan areas included in the study were Atlanta, Boston, Chicago, Denver, Houston, Las Vegas, Memphis, Minneapolis-St. Paul, Orlando, Phoenix, Pittsburgh, Raleigh-Durham, Reno-Sparks, Sacramento, Seattle-Tacoma and Tampa-St.Petersburg. On average, between 1973 and 1992, these metropolitan regions averaged 173 square miles of additional urban land over the two decades with Houston, Orlando and Atlanta as the top three regions by area. The growth leaders by percentage change were Las Vegas (193%), Orlando (157%), and Phoenix (103%).

USGS scientists continue to assess the status of the Nation’s land surface and to analyze trends in land use. These assessments aid decision makers in considering such critical issues as ecology of urban environments, ecosystem health, water quality and quantity, resource availability and vulnerability to natural hazards.  

The USGS serves the nation by providing reliable scientific information to: describe and understand the Earth; minimize loss of life and property from natural disasters; manage water, biological, energy and mineral resources; and enhance and protect our quality of life.

From a USGS press release.  To receive USGS news releases go here.