Map of the Area Ruggedness Scale (ARS)

Map of the United States showing the six levels of the Area Ruggedness Scale.

The intersection of rugged terrain and economic activity remains understudied, so USDA, Economic Research Service researchers developed two classifications of U.S. census tracts: the six-level Area Ruggedness Scale and the five-level Road Ruggedness Scale.

Download higher resolution chart (4267 pixels by 5309, 300 dpi)