Willamette Falls Locks
The Willamette Falls Locks are a lock system on the Willamette River in the U.S. state of Oregon. Opened in 1873 and closed since 2011, they allowed boat traffic on the Willamette to navigate beyond Willamette Falls and the T.W. Sullivan Dam. Since their closure in 2011 the locks are classified to be in a "non-operational status" and are expected to remain permanently closed.

Located in the Portland metropolitan area, the four inter-connected locks are 25 miles upriver from the Columbia River at West Linn, just across the Willamette River from Oregon City. The locks were operated by the United States Army Corps of Engineers and served primarily pleasure boats. Passage through the locks was free for both commercial and recreational vessels. The locks were added to the National Register of Historic Places in 1974 and designated as a Oregon Historic Civil Engineering Landmark by the American Society of Civil Engineers in 1991.

The locks comprise seven gates in four chambers which lift up to elevation change (depending on tides and river flow) with a usable width of . The system is long, and can accommodate vessels up to long. Each of the four concrete constructed chambers are .
Q105731
lock system
Concept
Q131071
Willamette River
LOC
Q824
Oregon
LOC
Q8003290
Willamette Falls
LOC
Q85804738
T.W. Sullivan Dam
LOC
Q4382066
Portland metropolitan area
Concept
Q2251
Columbia River
LOC
Q932097
West Linn
LOC
Q849596
Oregon City
LOC
Q1049334
United States Army Corps of Engineers
PER
Q3719
National Register of Historic Places
PER
Q466880
American Society of Civil Engineers
ORG
Q8003288
Willamette Falls Locks
LOC
1873-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1873
DATE
2011-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2011
DATE
2011-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2011
DATE
1974-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1974
DATE
1991-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1991
DATE
+25^^http://www.w3.org/2001/XMLSchema#decimal
25
NUMBER
instance of
located in or next to body of water
located in or next to body of water
located in the administrative territorial entity
location