Topographic Survey and Mapping

A topographic survey measures the elevation of points on a particular piece of land, and presents them as contour lines on a plot. A land survey locates physical features, such as buildings, improvements, fences, elevations, land contours trees, and streams. These features are given elevations based on a vertical datum and coordinates based on a horizontal datum. This type of survey may be required by a government agency, or may be used by engineers and/or architects for the design of improvements or developments on a site