-Prepare and maintain sketches, maps, reports and legal description of surveys in order to describe, certify, and assume liability -Verify the accuracy data, including measurements and calculations conducted at surveyed sites -Direct or conduct surveys in order to establish legal boundaries for properties based on legal deeds and titles -Record the results of surveys, including the shape, contour , location, elevation, and dimensions of land or land features -Calculate heights,depths,relative position, property lines, and other characteristics of terrain -Prepare or supervise preparation of all data, charts, plots, maps, records, and documents related to survey