McNary Dam is a 1.4-mile (2.2-km) long concrete gravity run-of-the-river dam which spans the Columbia River. It joins Umatilla County Oregon with Benton County Washington 292 miles (470 km) upriver from the mouth of the Columbia at Astoria Oregon. It is operated by the U.S. Army Corps of Engineers’ McNary Lock and Dam office. The dam is located a mile (2 km) east of the town of Umatilla Oregon and 8 miles (13 km) north of Hermiston Oregon.
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point
length (km)
2244.85
building start year
1947-01-01T00:00:00+02:00
height (cm)
55.7784
location
Benton County Washington, Umatilla County Oregon, United States
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