Verify the accuracy of survey data including measurements and calculations conducted at survey sites. •Verify mathematical calculations. •Calculate heights, depths, relative positions, property lines, and other characteristics of terrain. •Calculate geographic positions from survey data. •Gather physical survey data. •Prepare and maintain sketches, maps, reports, and legal descriptions of surveys to describe, certify, and assume liability for work performed. •Create maps. •Direct or conduct surveys to establish legal boundaries •Compute geodetic measurements and interpret survey data to determine positions, shapes, and elevations •Calculate geographic positions from survey data •Determine longitudes and latitudes of important features and boundaries in survey areas using theodolites, transits, levels, and satellite-based global positioning systems (GPS) •Record the results of surveys including the shape, contour, location, elevation, and dimensions of land or land features. Survey land or bodies of water to measure or determine features •Establish fixed points for use in making maps, using geodetic and engineering instruments •Plan and conduct ground surveys designed to establish baselines, elevations, and other geodetic measurements. Survey land or bodies of water to measure or determine features