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| Build and update digital databases. |
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| Collect information about specific features of the Earth, using aerial photography and other digital remote sensing techniques. |
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| Compile data required for map preparation, including aerial photographs, survey notes, records, reports, and original maps. |
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| Delineate aerial photographic detail, such as control points, hydrography, topography, and cultural features, using precision stereoplotting apparatus or drafting instruments. |
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| Determine guidelines that specify which source material is acceptable for use. |
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| Determine map content and layout, as well as production specifications such as scale, size, projection, and colors, and direct production to ensure that specifications are followed. |
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| Examine and analyze data from ground surveys, reports, aerial photographs, and satellite images to prepare topographic maps, aerial-photograph mosaics, and related charts. |
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| Identify, scale, and orient geodetic points, elevations, and other planimetric or topographic features, applying standard mathematical formulas. |
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| Inspect final compositions to ensure completeness and accuracy. |
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| Prepare and alter trace maps, charts, tables, detailed drawings, and three-dimensional optical models of terrain using stereoscopic plotting and computer graphics equipment. |
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| Revise existing maps and charts, making all necessary corrections and adjustments. |
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| Select aerial photographic and remote sensing techniques and plotting equipment needed to meet required standards of accuracy. |
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| Study legal records to establish boundaries of local, national, and international properties. |
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| Travel over photographed areas to observe, identify, record, and verify all relevant features. |