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Lock and Dam No. 19 is a lock and dam located on the Upper Mississippi River near Keokuk, Iowa.In 1978, the Keokuk Lock and Dam was listed in the National Register of Historic Places, #78001234.
Lock and Dam No. 3: Red Wing, Minnesota: 796.9 675 feet Owned/operated by U.S. Army Corps of Engineers, Mississippi Valley Division, St. Paul District : Lock and Dam No. 4: Alma, Wisconsin
Peterborough Lift Lock HDR Peterborough Lift Lock (side view) Exhibition of historical lift models at the Peterborough Lift Lock. The Peterborough Lift Lock is a boat lift located on the Trent Canal in the city of Peterborough, Ontario, Canada, and is Lock 21 on the Trent-Severn Waterway.
The Keokuk Bridge, also known as the Keokuk Municipal Bridge, is a double-deck, single-track railway and highway bridge across the Mississippi River in the United States between Keokuk, Iowa, and Hamilton, Illinois, just downstream of Mississippi Lock and Dam number 19.
Opening paddle valves on Lock 20. The Locks on the Chesapeake and Ohio Canal, located in Maryland, West Virginia, and Washington, D.C. of the United States, were of three types: lift locks; river locks; and guard, or inlet, locks.
Lock 19 Reservoir in pound Lock 21, Lock 20 Lock 22 Southern Stratford Canal Grand Union Canal: M40: Kingswood Junction (grid reference) is a canal junction ...
Lock and Dam No. 18 is a lock and dam located near Gladstone, Illinois and Burlington, Iowa on the Upper Mississippi River around river mile 410.5. The movable dam is 1,350 feet (411.5 m) and consists of 3 roller gates and 14 tainter gates.
A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.