Garrison Dam, Intake House, 597 Garrison Dam Road, Riverdale, McLean County, ND

Significance: The intake house was built to take water in from Lake Sakakawea and conduct it to the powerhouse (HAER ND-15-A) via penstocks and surge tanks (HAER ND-15-B). The intake house maintained trash racks and had several sets of gates for regulating water supplied to the powerhouse. It also was the entrance for three regulating tunnels.

Unprocessed Field note material exists for this structure: N1592

Survey number: HAER ND-15-D

Building/structure dates: 1949-1954 Initial Construction

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1969 - 1980

Library of Congress

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