Cascade Locks Marine Park | |
 Remnants of the locks as of 2011 | |
   | |
| Location | On the Columbia River, Cascade Locks, Oregon |
|---|---|
| Area | 64.5 acres (26.1 ha) |
| Built | 1896 |
| NRHP reference No. | 74001686[1] |
| Added to NRHP | May 15, 1974 |
The Cascade Locks and Canal was a navigation project on the Columbia River between the U.S. states of Oregon and Washington, completed in 1896. It allowed the steamboats of the Columbia River to bypass the Cascades Rapids, and thereby opened a passage from the lower parts of the river as far as The Dalles. The locks were submerged and rendered obsolete in 1938, when the Bonneville Dam was constructed, along with a new set of locks, a short way downstream.[2]
- ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
- ^ Columbia River History, Northwest Power and Conservation Council. Accessed January 11, 2008.