Mapping Technicians

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Code: 17-3031.02

Description : Calculate mapmaking information from field notes, and draw and verify accuracy of topographical maps.

JobTitles : Mapping Technician, Stereoplotter Operator, Photogrammetric Compilation Specialist, Photogrammetric Technician, Computer Aided Design Technician (CAD Technician), Draftsman, Hydrographic Surveyor, Photogrammetric Stereo Compiler, Aerotriangulation Specialist, Agricultural Global Positioning System Mapper (Agricultural GPS Mapper)

Tasks:
  • Check all layers of maps to ensure accuracy, identifying and marking errors and making corrections.
  • Determine scales, line sizes, or colors to be used for hard copies of computerized maps, using plotters.
  • Monitor mapping work or the updating of maps to ensure accuracy, the inclusion of new or changed information, or compliance with rules and regulations.
  • Identify and compile database information to create maps in response to requests.
  • Produce or update overlay maps to show information boundaries, water locations, or topographic features on various base maps or at different scales.
  • Trace contours or topographic details to generate maps that denote specific land or property locations or geographic attributes.
  • Lay out and match aerial photographs in sequences in which they were taken and identify any areas missing from photographs.
  • Compare topographical features or contour lines with images from aerial photographs, old maps, or other reference materials to verify the accuracy of their identification.
  • Compute and measure scaled distances between reference points to establish relative positions of adjoining prints and enable the creation of photographic mosaics.
  • Research resources such as survey maps or legal descriptions to verify property lines or to obtain information needed for mapping.