topographic survey

A topographic survey shows natural and man-made features on a parcel of land, horizontal locations and vertical elevations at predefined intervals, grade changes, above ground features, and existing structures. The survey is generally used for graphically depicting the surface.

volumetric survey

A volumetric Survey is used to determine the volume of material between two surfaces. It is used to determine how much material is stored in a stock pile or how much material must be removed or placed to modify a natural surface to a designed surface.