They do this to determine official land, air space, and water boundaries. Surveyors provide data for mapmaking, construction projects, and other engineering purposes. They plan projects, choose survey reference points, and determine the exact location of important features that are within the survey area. They record data and prepare maps and reports. Three groups of workers measure and map the earth's surface.
Land surveyors locate official land, air space, and water boundaries.
They write descriptions of land. These may be used for deeds, leases, and other legal documents. They define air space for airports and measure construction and mineral sites. Survey technicians help land surveyors by operating survey instruments and collecting information. Mapping scientists and surveyors collect geographic information and prepare maps of large areas.