Everything about Lock And Dam No 19 totally explained
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, 7 buildings, 12 structures, 1 object. The lock and dam are owned and operated by the
U.S. Army Corps of Engineers.
The lock and dam obliterated the
Des Moines Rapids which had effectively been the northern barrier for traffic on the Mississippi until efforts began in 1837 to address the Mississippi's 2.5 foot depth in the rapids.
Locks
The main lock was constructed from 1952 to 1957 and is long and wide with a lift of just over 38 feet and large enough to handle a full-length fleet of barges. It was put into operation in 1957 at a cost of 13.5 million dollars. The 1957 lock replaced a 1910-1913 lock. The 1913 lock was a variant of the standardized Panama canal design and was wide, long and tall with a lift. There was a wide, long and deep dry dock at the site, both the
dry dock and 1913 lock were dewatered in 1977 when a sheet pile and cell closure were built blocking the upstream sides of the lock and dry dock.
With a difference between the normal pool above and below the dam, the lock has the highest "step" in the stairway of the Rock Island District locks and dams. The lock and dam, as well as the rest of the river, can be viewed from a distance on the Observation Deck of the
Keokuk Rail Bridge.
Dam
The movable portion of the dam is long with 119 separate rectangular, steel-skin plated, sliding gates and its construction began in 1910, and when completed in 1913. The gates are either installed or removed and river flow is controlled by the number of gates installed. They are removed by a gantry crane that travels on the service bridge above the dam. At the time it was completed it was second in length only to the
Aswan (low) dam on the
Nile River.
Hugh L. Cooper was the designer of the
Keokuk Dam. The pool created behind the dam, Lake Cooper, is named in his honor and is the largest pool in the series of dams with 240 miles of shoreline.
Powerhouse
Construction began in 1910, and when completed in 1913, it was the largest capacity, single powerhouse electricity generating plant in the world. The Power House and spillways are owned and operated by
Ameren Power Company and has a 134 MW capacity.
(External Link
) The powerhouse contains 15 generators, originally designed to produce 25 Hz instead of the 60 Hz
alternating current used today.
,
Lock and Dam No. 2 and the
upper St. Anthony Falls dam also produce electricity.
Further Information
Get more info on 'Lock And Dam No 19'.
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