The Cascade Locks and Canal was a navigation project on the

Columbia River The Columbia River (Upper Chinook language, Upper Chinook: ' or '; Sahaptin language, Sahaptin: ''Nch’i-Wàna'' or ''Nchi wana''; Sinixt dialect'' '') is the largest river in the Pacific Northwest region of North America. The river headwater ...

between the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

s of

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

and

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

, completed in 1896. It allowed the

steamboats of the Columbia River Many steamboats operated on the Columbia River and tributaries of the Columbia River, its tributaries, in the Pacific Northwest region of North America, from about 1850 to 1981. Major tributaries of the Columbia that formed steamboat routes inclu ...

to bypass the

Cascades Rapids The Cascades Rapids (sometimes called Cascade Falls or Cascades of the Columbia) were an area of rapids along North America's Columbia River, between the U.S. states of Washington and Oregon. Through a stretch approximately wide, the river dr ...

, 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 Bonneville Lock and Dam consists of several run-of-the-river dam structures that together complete a span of the Columbia River between the U.S. states of Oregon and Washington at River Mile 146.1. The dam is located east of Portland, Ore ...

was constructed, along with a new set of locks, a short way downstream.

Design and construction

As rail competition grew, and forced steamboats off their old routes, shippers and steamboat lines began agitating Congress to allocate funds for improvements to the river, in the form of canals and locks, that would restore their competitive position relative to the railroads. The two main improvements sought on the Columbia were the Cascade Locks and, about twenty years later, the Celilo Canal and Locks. Studies for a canal at the Cascades had begun in 1875, but interest tapered off when

Oregon Railroad and Navigation Company The Oregon Railroad and Navigation Company (OR&N) was a rail and steamboat transport company that operated a rail network of running east from Portland, Oregon, United States, to northeastern Oregon, northeastern Washington, and northern Id ...

(O.R.& N.) finished the railroad to The Dalles and took its boats off the middle river. Anti-monopoly shippers eventually got Congress to allocate funds in 1893 to begin the canal and locks at the Cascades, which were completed in November 1896. The locks had a lift chamber carved in solid rock long, and 90' wide, with of draft, deep enough for any vessel then on the river, and large enough to accommodate several at once. The locks could raise a vessel 14' at high water and 24' at low water. The lock gates were wide and high. The locks were carefully designed to address the great variation in the height of the river, the difference between high and low water being . This condition made it necessary to build a series of three sets of gates, increasing in height from the lower entrance to the huge upper guard gate, only two sets being used at one time. When the river was low, the upper guard gates remained open continually and the lower sets were operated. When the water rose enough to drown the lower gates, they were swung open and the lifting work was done by the others. The upper approach was formed by masonry wall extending from the guard gate in a long sweep of , and the bank behind was armored against floods with riprapped stone. Image:Cascade Locks, looking east, circa 1897.jpg, Cascade Locks, circa 1897, looking east, locks are functioning but bank work is still ongoing Image:Cascade Locks, looking south over lower lock, circa 1897.jpg, Cascade Locks, circa 1897, looking south and downriver across lower lock Image:Cascade Locks, looking south and east, circa 1897.jpg, Cascade Locks, circa 1897, looking south, showing middle lock and lockmaster and engineer buildings on embankment on south side

Effect on river traffic

In an 1897 article written shortly after their completion, ''Scientific American'' was optimistic about the future of the locks, saying: As it turns out, completion of the locks and the canal leading from the east end of the locks, produced some increase in traffic, but not as much increase in riverine traffic as had been hoped. The North Bank railroad was also completed along the Columbia, which took more business away from the boats. As a result, the Regulator Line, which had been running ''Dalles City'', ''Regulator'', and '' Bailey Gatzert'' on the lower Columbia, and, through the locks, on the middle Columbia, sold out to James J. Hill, owner of the Great Northern and other railroads. Not long later, in 1912, the Panama Canal Act made it illegal for a railroad to be owned in common with a competing steamboat line, so in 1915, Great Northern sold its boats.Timmen, Fritz, ''Blow for the Landing'', at page 32-36, Caxton Printers, Caldwell, ID, 1972

Current status

The lower lock and the canal were flooded when the

was completed in the 1930s. The upper part of the higher lock is still visible and part of Cascade Locks Marine Park in the city of Cascade Locks, Oregon. The park is listed on the

National Register of Historic Places The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ...

References

External links

Photographs