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
Quick Description: Massive concrete dam spanning the Columbia River between Oregon and Washington.
Location: Oregon, United States
Date Posted: 3/19/2009 7:44:02 PM
Waymark Code: WM623Q
Views: 2
Long Description: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.