From the record
“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.”
Wikipedia article Cascade Locks and Canal, CC BY-SA 4.0.
One of 36 National Register listings published here for Hood River County · listed in 1974 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

