Bonneville Dam - Bonneville Dam Historic District - Columbia River, OR/WA
Posted by: 
BruceS
N 45° 38.502 W 121° 56.608
10T E 582336 N 5054781
Massive concrete dam spanning the Columbia River between Oregon and Washington.
Waymark Code: WM623Q
Location: Oregon, United States
Date Posted: 03/19/2009
Views: 11
The Bonneville Dam was constructed by the US Army Corps of Engineers between 1933 and 1937. The massive dam is used to raise and divert water through huge turbines in the powerhouses to produce electrical power.
"Bonneville Dam is a gravity-type, concrete spillway, ogee crest dam reaching 1,230 feet across the present center channel of the Columbia River. The. dam is 180 feet wide at its base. Its face consists of twelve 50 by 50-foot and six 50 by 60-foot, movable-crest, steel gates, between concrete piers. The overflow of the dam is fixed at a crest of 24 feet above mean sea level. The 18 vertical-lift gates are set between piers, each ten feet wide, which extend to 99 feet above sea level. At that elevation a service roadway extends across the dam. Two 350-ton gantry cranes for regulating the gates operate at that level. The dam has reinforced concrete cut-off walls set into the adjoining banks of Cascade and Bradford island and a concrete counterfort wall to protect the upstream bank at each abutment." - Historic District nomination form
The coordinates listed above are for the visitor center, one of the better places to view the dam.
Name of Historic District (as listed on the NRHP): Bonneville Dam Historic District
Link to nationalregisterofhistoricplaces.com page with the Historic District: [Web Link]
Address:
Columbia River
Oregon/Washington
How did you determine the building to be a contributing structure?: Narrative found on the internet (Link provided below)
Optional link to narrative or database: [Web Link]
NRHP Historic District Waymark (Optional): Not listed
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