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

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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

Author(s):
Mckim, Harlan L. ; Marlar, Thomas L. ; Anderson, Duwayne M.
Author Organization(s):
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Descriptive Note:
Special rept.,
Pagination:
0020

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
CRREL-SR-183
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*SCIENTIFIC SATELLITES, *MULTIBAND SPECTRAL RECONNAISSANCE), (*DAMS, *AERIAL RECONNAISSANCE), PHOTOGRAPHIC IMAGES, PHOTOINTERPRETABILITY, RESOLUTION, PHOTOGRAMMETRY, HYDROGRAPHIC SURVEYING
Field(s)/Group(s):
Civil Engineering, Photography, Unmanned Spacecraft
Report Date:
1972 Dec 01