Description: This feature class describes the elevation of the imaginary surfaces that limit structure heights around the College Park Airport. Surface elevations are described within five-foot ranges.
Description: This feature class describes the elevation of the imaginary surfaces that limit structure heights around the College Park Airport. The layer is a mesh of polygons, each one containing an imaginary surface height, a ground elevation, and the difference between the two. This difference represents the maximum height a structure can be without penetrating the imaginary surface and therefore obstructing air navigation. All elevation measurements are approximate.