Area

Must have legally defined geographical boundaries, and may be of any size, except that the site must be a subset of the U.S. federal, state, commonwealth, territorial, local, or tribal marine environment in which it is located.

1. A homogeneous extent of the Earth bounded by one or more arc features (polygon) or represented as a set of polygons (region). Examples: states, counties, lakes, land-use areas, and census tracts.
2. The size of a geographic feature measured in unit squares. ARC/INFO stores an area measure for each polygon and region.