Land surveyors measure properties and plots of land to delineate boundaries of property lines and gather data on the shape and contour of the landscape. This information is essential for determining the location of buildings and roads, preventing or settling disputes over property lines, and contributing to the creation of maps. When assigned a project, land surveyors research the specific property, examining previous surveys, land records, and land titles that may exist for reference. They measure distances and angles between locations and utilize Global Positioning System (GPS) and Geographic Information Systems (GIS) technology to create accurate digital maps of an area. Land surveyors use these maps and reports to advise government agencies and businesses on where to build construction projects, such as homes, roads, and landfills.