Accession Number:

AD0754579

Title:

The Use of ERTS-1 Imagery in the National Program for the Inspection of Dams.

Descriptive Note:

Special rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

• McKim,Harlan L.
• Marlar,Thomas L.
• Anderson,Duwayne M.

Report Date:

1972-12-01

Pagination or Media Count:

20.0

Abstract:

ERTS-1 imagery can be useful in locating circular water bodies over 152 m 500 ft in diameter. Dams on streams can be identified by an abrupt change in stream width. A linear termination on a water body is a reliable indication of a dam, particularly when it is inconsistent with the normal drainage pattern. Care must be exercised to avoid confusing cloud shadows with water bodies. However, the association of a cloud with its shadow usually can be accomplished since the sun angle is noted in the data given on each ERTS image. Author

Descriptors:

• (*SCIENTIFIC SATELLITES
• *MULTIBAND SPECTRAL RECONNAISSANCE)
• (*DAMS
• *AERIAL RECONNAISSANCE)
• PHOTOGRAPHIC IMAGES
• PHOTOINTERPRETABILITY
• RESOLUTION
• PHOTOGRAMMETRY
• HYDROGRAPHIC SURVEYING

Subject Categories:

• Civil Engineering
• Photography
• Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE