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"No. 175. View showing regulator gates and temporary equipment for hoisting the sluiceway roller. F.E.D. June, 1916." - Grand Valley Diversion Dam, Half a mile north of intersection of I

Library of Congress, via Wikimedia Commons · Documentation compiled after 1968 · Historic American Engineering Record

"No. 175. View showing regulator gates and temporary equipment for hoisting the sluiceway roller. F.e.d. June, 1916.".
From the archive · Library of Congress, via Wikimedia Commons · Documentation compiled after 1968 "No. 175. View showing regulator gates and temporary equipment for hoisting the sluiceway roller. F.E.D. June, 1916." - Grand Valley Diversion Dam, Half a mile north of intersection of I Historic American Engineering Record

Historic American Engineering Record, Library of Congress, Prints & Photographs Division, HAER CO-90-42; via Wikimedia Commons No known restrictions on publication. Archive record ↗ · Rights

Source Archival record · verify at Library of Congress, via Wikimedia Commons ↗

From the Historic American Engineering Record's survey of Grand Valley Diversion Dam. The photographer's own caption is the title above.

Shows: Grand Valley Diversion Dam as the survey found it, in the frame the survey chose.

What this does not let you conclude: The structure's present condition, or how much water it carries today; the record beside it carries the numbers. HAER surveyed what was standing, not what was decreed. HAER's compilation date; the photograph itself is undated in the record.

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