# Surveying and Mapping Technicians > Perform surveying and mapping duties, usually under the direction of an engineer, surveyor, cartographer, or photogrammetrist, to obtain data used for construction, mapmaking, boundary location, mining, or other purposes. May calculate mapmaking information and create maps from source data, such as surveying notes, aerial photography, satellite data, or other maps to show topographical features, political boundaries, and other features. May verify accuracy and completeness of maps. - Code: 17-3031.00 (O*NET-SOC; SOC 2018 17-3031) - Family: [Architecture & Engineering](https://foundation.org.ai/occupations#family-17), one of its 59 occupations - Tasks: 30 tasks (17 core, 2 supplemental and 11 not rated) - Page: https://foundation.org.ai/occupations/17-3031.00 - JSON: https://foundation.org.ai/data/tasks/17-3031.00.json ## What the work is made of 1. Position and hold the vertical rods, or targets, that theodolite operators use for sighting to measure angles, distances, and elevations. Core task · Task 22103 · Rated by O*NET analysts, November 2020 2. Check all layers of maps to ensure accuracy, identifying and marking errors and making corrections. Core task · Task 22104 · Rated by O*NET analysts, November 2020 3. Design or develop information databases that include geographic or topographic data. Core task · Task 22105 · Rated by O*NET analysts, November 2020 4. Monitor mapping work or the updating of maps to ensure accuracy, inclusion of new or changed information, or compliance with rules and regulations. Core task · Task 22106 · Rated by O*NET analysts, November 2020 5. Produce or update overlay maps to show information boundaries, water locations, or topographic features on various base maps or at different scales. Core task · Task 22107 · Rated by O*NET analysts, November 2020 6. Determine scales, line sizes, or colors to be used for hard copies of computerized maps, using plotters. Core task · Task 22108 · Rated by O*NET analysts, November 2020 7. Compile information necessary to stake projects for construction, using engineering plans. Core task · Task 22109 · Rated by O*NET analysts, November 2020 8. Identify and compile database information to create requested maps. Core task · Task 22110 · Rated by O*NET analysts, November 2020 9. Operate and manage land-information computer systems, performing tasks such as storing data, making inquiries, and producing plots and reports. Core task · Task 22111 · Rated by O*NET analysts, November 2020 10. Compare survey computations with applicable standards to determine adequacy of data. Core task · Task 22112 · Rated by O*NET analysts, November 2020 11. Analyze aerial photographs to detect and interpret significant military, industrial, resource, or topographical data. Core task · Task 22113 · Rated by O*NET analysts, November 2020 12. Research and combine existing property information to describe property boundaries in relation to adjacent properties, taking into account parcel splits, combinations, or land boundary adjustments. Core task · Task 22114 · Rated by O*NET analysts, November 2020 13. Calculate latitudes, longitudes, angles, areas, or other information for mapmaking, using survey field notes or reference tables. Core task · Task 22115 · Rated by O*NET analysts, November 2020 14. Compare topographical features or contour lines with images from aerial photographs, old maps, or other reference materials to verify the accuracy of their identification. Core task · Task 22116 · Rated by O*NET analysts, November 2020 15. Trace contours or topographic details to generate maps that denote specific land or property locations or geographic attributes. Core task · Task 22117 · Rated by O*NET analysts, November 2020 16. Provide assistance in the development of methods and procedures for conducting field surveys. Core task · Task 22118 · Rated by O*NET analysts, November 2020 17. Trim, align, and join prints to form photographic mosaics, maintaining scaled distances between reference points. Core task · Task 22119 · Rated by O*NET analysts, November 2020 18. Answer questions and provide information to the public or to staff members regarding assessment maps, surveys, boundaries, easements, property ownership, roads, zoning, or similar matters. Supplemental task · Task 22120 · Rated by O*NET analysts, November 2020 19. Complete detailed source and method notes describing the location of routine or complex land parcels. Supplemental task · Task 22121 · Rated by O*NET analysts, November 2020 20. Adjust and operate surveying instruments such as prisms, theodolites, electronic distance measuring equipment, or electronic data collectors. Not rated · Task 22122 · Listed by O*NET analysts, November 2020 21. Collect information needed to carry out new surveys, using source maps, previous survey data, photographs, computer records, or other relevant information. Not rated · Task 22123 · Listed by O*NET analysts, November 2020 22. Conduct surveys to ascertain the locations of natural features and man-made structures on the Earth's surface, underground, and underwater, using electronic distance-measuring equipment, such as GPS, and other surveying instruments. Not rated · Task 22124 · Listed by O*NET analysts, November 2020 23. Enter Global Positioning System (GPS) data, legal deeds, field notes, or land survey reports into geographic information system (GIS) workstations so that information can be transformed into graphic land descriptions, such as maps and drawings. Not rated · Task 22125 · Listed by O*NET analysts, November 2020 24. Perform calculations to determine earth curvature corrections, atmospheric impacts on measurements, traverse closures or adjustments, azimuths, level runs, or placement of markers. Not rated · Task 22126 · Listed by O*NET analysts, November 2020 25. Prepare cost estimates for mapping projects. Not rated · Task 22127 · Listed by O*NET analysts, November 2020 26. Prepare topographic or contour maps of land surveyed, including site features and other relevant information, such as charts, drawings, and survey notes. Not rated · Task 22128 · Listed by O*NET analysts, November 2020 27. Record survey measurements or descriptive data, using notes, drawings, sketches, or inked tracings. Not rated · Task 22129 · Listed by O*NET analysts, November 2020 28. Search for section corners, property irons, or survey points. Not rated · Task 22130 · Listed by O*NET analysts, November 2020 29. Set out and recover stakes, marks, or other monumentation. Not rated · Task 22131 · Listed by O*NET analysts, November 2020 30. Supervise or coordinate activities of workers engaged in surveying, plotting data, drafting maps, or producing blueprints, photostats, or photographs. 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