The Use of ERTS-1 Imagery in the National Program for the Inspection of Dams.
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
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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
- Civil Engineering
- Unmanned Spacecraft