In recent years, aerial photography has played an important role in collecting hydraulic data for the design of bridge and drainage structures. Automated systems, which include aerial photogrammetric techniques, computer analysis, and automated plotting, are increasing the accuracy of aerial surveys. The FHWA contracted with the Wyoming Highway Department to develop a design system using aerial survey methods that is a potentially more economical means of obtaining and displaying basic data for highway drainage site analysis. Studies by the Wyoming Highway Department show it is considerably less expensive to obtain stream profile and cross-section data from a stereo model when done in conjunction with earthwork designs than by conventional field survey techniques. The conventional techniques will generally be more expensive due to greater manpower and time requirements as a result of steep terrain, site inaccessibility, inclement weather, travel, and manual transcription of survey notes. It should be kept in mind, however, that many variables are involved which affect the cost of both field and aerial drainage surveys. The computer program contained in the manual processes basic aerial survey data and transforms it into drainage information which can be used for design. Tape output for computer plotting application permits profile and cross-section plotting on a special drainage survey form.

  • Corporate Authors:

    Wyoming State Highway Department


    Federal Highway Administration

    Office of Implementation, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Schilling, M G
    • Marques, M
    • Thomas, R
  • Publication Date: 1978-3

Media Info

  • Pagination: 82 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00191675
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA/IP-78-2
  • Contract Numbers: DOT-FH-11-7936
  • Created Date: Jun 13 1979 12:00AM