Saint Anthony Falls, or the Falls of Saint Anthony located at the northeastern edge of downtown Minneapolis, Minnesota, is the only natural major waterfall on the Mississippi River. Throughout the mid-to-late 1800’s, various dams were built atop the east and west faces of the falls to support the milling industry that spurred the growth of the city of Minneapolis. In 1880, the central face of the falls was reinforced with a sloping timber apron to stop the upstream erosion of the falls. In the 1950s, the apron was rebuilt with concrete, which makes up the most visible portion of the falls today. A series of locks were constructed in the 1950s and 1960s to extend navigation to points upstream.
The John Day Dam is a concrete gravity run-of-the-river dam spanning the Columbia River in the northwestern United States. The dam features a navigation lock plus fish ladders on both sides. The John Day Lock has the highest lift of any U.S. lock. The reservoir impounded by the dam is Lake Umatilla, and it runs 76.4 miles (123.0 km) up the river channel to the foot of the McNary Dam. John Day Dam is part of the Columbia River Basin system of dams.
Table Rock Lake is an artificial lake or reservoir in the Ozarks of southwestern Missouri and northwestern Arkansas in the United States. Designed, built and operated by the U.S. Army Corps of Engineers, the lake is impounded by Table Rock Dam, which was constructed from 1954 to 1958 on the White River.
Ford Dam, officially known as Lock and Dam No. 1, is on the Upper Mississippi River and is located between Minneapolis and Saint Paul, Minnesota just north of the confluence of the Mississippi with the Minnesota River at Mississippi River mile 847.9, in Minneapolis. The powerhouse portion was previously owned by the Ford Motor Company, which operated a hydroelectric power station to feed electricity to its Twin Cities Assembly Plant on the east side of the river. It was sold to Brookfield Power Co. in April 2008. The dual-lock facility and dam was built and is operated by the St. Paul district of the U.S. Army Corps of Engineers' Mississippi Valley Division.
Lock and Dam No. 3 is a lock and dam located near Red Wing, Minnesota on the Upper Mississippi River around river mile 796.9. It was constructed and placed in operation July 1938. The site underwent major rehabilitation from 1988 through 1991. The dam is 365 feet (111.3 m) long with 4 roller gates. More than 2,000 feet (609.6 m) of earth embankment with a series of upstream spot dikes completes the structure to create Pool 3. The lock chamber is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. The lock and dam is owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.
Lock and Dam No. 5 is a lock and dam located in Buffalo County, Wisconsin and Winona County, Minnesota on the Upper Mississippi River around river mile 738.1. It was constructed and placed in operation May 1935. The site underwent major rehabilitation from 1987 through 1998. The dam consists of concrete structure 1,619 feet (493.5 m) long with six roller gates and 28 tainter gates and an earth embankment 18,000 feet (5,486.4 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.
Lock and Dam No. 5A is a lock and dam located near Fountain City, Wisconsin and Goodview, Minnesota on the Upper Mississippi River around river mile 728.5.
Lock and Dam No. 6 is a lock and dam located near Trempealeau, Wisconsin on the Upper Mississippi River near river mile 714.1. It was constructed and placed in operation in June 1936. The last major rehabilitation was from 1989 to 1999. The dam consists of 893 feet (272.2 m) long concrete structure with five roller gates and 10 tainter gates. Its earth embankment is 2,600 feet (792.5 m)long and the concrete overflow spillway is 1,000 feet (304.8 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.
Lock and Dam No. 8 is a lock and dam located near Genoa, Wisconsin on the Upper Mississippi River near river mile 679.2 in the United States It was constructed and was put into operation by April 1937. The site then underwent major rehabilitation from 1989 through 2003. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.
Lock and Dam No. 9 is a lock and dam located near Lynxville, Wisconsin and Harpers Ferry, Iowa on the Upper Mississippi River around river mile 647.9. The lower portion of Pool 9 was formally named Lake Winneshiek. The normal pool elevation behind the dam is 620 feet (189.0 m). It was constructed and placed in operation in July 1937. The site underwent a major rehabilitation from 1989 and 2006. The dam consists of concrete structure 811 feet (247.2 m) long with five roller gates and eight tainter gates. Earth embankment 9,800 feet (2,987.0 m) long with a grouted overflow spillway 1,350 feet (411.5 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. Lock and Dam No. 9 is located 12 miles upstream from Prairie du Chien, Wisconsin. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.
Lock and Dam No. 10 is a lock and dam located in Guttenberg, Iowa on the Upper Mississippi River around river mile 615.0. It was constructed and placed in operation November 1937. The site underwent major rehabilitation 1989—2006. The dam consists of a concrete dam 763 feet (232.6 m) long with four roller gates and eight tainter gates. The earth embankment is 4,223 feet (1,287.2 m) long with a concrete spillway 1,200 feet (365.8 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.
General Zebulon Pike Lock and Dam No. 11 is a lock and dam located between Dubuque, Iowa, and rural Grant County, Wisconsin, on the Upper Mississippi River.
Lock and Dam No. 12 is a lock and dam located on the Upper Mississippi River at Bellevue, Iowa, United States. The movable portion of the dam starts at the locks adjacent to the Iowa shore and is 849 feet (258.8 m) long, consisting of seven tainter gates and three roller gates. It connects to a 200-foot (61.0 m) storage yard and continues toward the Illinois shore with a 2,750-foot (838.2 m) non-submersible dike, a 1,200-foot (365.8 m) submersible dike and a 3,130-foot (954.0 m) non-submersible dike. The non-submersible sections are separated from the submersible section with two 120-foot (36.6 m) transitional dikes. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. There is also an incomplete auxiliary lock. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 12 Historic District, #04000172 covering 1,017 acres (4.1 km2), 1 building, 3 structures, and 4 objects.
Lock and Dam No. 13 is a lock and dam located on the Upper Mississippi River above Fulton, Illinois and Clinton, Iowa, United States. This facility offers visitors a view of the barges and boats locking through on the widest pool in the Upper Mississippi River.
Lock and Dam No. 15 is a lock and dam located on the Upper Mississippi River. It spans the river between Rock Island, Illinois and Davenport, Iowa. Lock and Dam 15 is the largest roller dam in the world, its dam is 1,203 feet (366.7 m) long and consists of nine 109 feet (33.2 m) non-submersible, non-overflow roller gates and two 109 feet (33.2 m) non-submersible overflow roller gates. It is unusual among the upper Mississippi River dams in that it has only roller gates, has different sizes and types of roller gates, it is not perpendicular to the flow of the river and is one of the few facilities that has a completed auxiliary lock. The main lock is 110 feet (33.5 m) wide by 600 feet (180 m) long and its auxiliary lock is 110 feet (34 m) wide by 360 feet (110 m) long. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 15 Historic District, #04000175 covering 3,590 acres (1,450 ha), 2 buildings, 9 structures, and 1 object.
Lock and Dam No. 19 is a lock and dam located on the Upper Mississippi River near Keokuk, Iowa. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 19 Historic District, #04000179 covering 1,605 acres (650 ha), 7 buildings, 12 structures, 1 object. The lock is owned and operated by the U.S. Army Corps of Engineers. The dam is owned and operated by Ameren Missouri.
Lock and Dam No. 25 is a lock and dam located near Winfield, Missouri, on the Upper Mississippi River around river mile 241.4. The movable portion of the dam is 1,296 feet (395.0 m) long and consists of three roller gates and 14 tainter gates. A 2,566 feet (782.1 m) submersible dike extends to the Illinois shore. A 5 miles (8.0 km) long dike is part of the facility extending upstream on the Missouri side of the river. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 25 Historic District, #04000184 covering 3,164 acres (12.8 km2), 2 buildings, 7 structures, 2 objects.
Benbrook Lake is a reservoir on the Clear Fork of the Trinity River in Tarrant County, Texas, USA. The lake is located approximately 10 miles (16 km) southwest of the center of Fort Worth, where the Clear Fork and the West Fork of the Trinity River join. The lake is impounded by the Benbrook Dam. The lake and dam are owned and operated by the U.S. Army Corps of Engineers, Fort Worth District.
The Prairie du Sac Dam is a hydroelectric dam on the Wisconsin River just north of Prairie du Sac, Wisconsin. It is owned and operated by Alliant Energy. The dam forms Lake Wisconsin. It is the last dam on the Wisconsin River before its confluence with the Mississippi River about 92 miles (148 km) downstream, and it marks the upper end of the Lower Wisconsin State Riverway.
Public Works Administration construction project
PWA construction of Lock and Dam No. 7
Lock and Dam No. 7
U.S. Army Corps of Engineers, St. Paul District
