Topographic Surveys provide a 3-dimensional model of the site. These surveys are conducted before and/or after the development of a site. A Topographical Survey Map describes the horizontal and vertical position of the various features within and abutting the subject lands with respect to property boundaries. Topographic land surveyors are highly skilled and use a variety of tools and methods to measure the elevation of various points across a specified piece of land. The plans are very detailed and clearly illustrate the shape of the land. Some of the features included are buildings, trees, fences, surfaces, levels, roads and rivers.