Everything about Lock And Dam No 1 Mississippi River totally explained
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. The
dam portion is owned by the
Ford Motor Company, which operates a
hydroelectric power station to feed electricity to its
Twin Cities Assembly Plant on the east side of the river. The dual-
lock facility is operated by the St. Paul district of the
U.S. Army Corps of Engineers'
Mississippi Valley Division.
History
The first facility at the site went into operation in
1917 and superseded the role of the earlier Lock and Dam No. 2 (today known as the
Meeker Island Lock and Dam). The facility was rebuilt in
1929, and an expansion from one lock to two locks was completed in
1932. Each lock is 56 feet wide by 400 feet long (17 × 122 meters), half the width of the next lock downstream, though this is the only dual-lock facility in the district. Major rehabilitation efforts were carried out between
1978 and
1983, including the replacement of many manual and
hydraulic components with computer controls.
The eastern portion of the site consists of an overflow
Ambursen dam, which is a
buttress dam where the upstream part is a relatively thin flat slab usually made of
reinforced concrete. There is an inflatable section on top of the dam that can slightly increase its size when so desired. The lock side of the facility has a large observation area that's open from April to November each year. A bridge allows visitors to walk over the two locks and right up next to the dam.
When the facility opened, it assured a navigable channel up to the tail end of
Saint Anthony Falls upriver in Minneapolis. Additional locks were added there in the
1960s, extending the
head of navigation to the northern part of the city. A dam in
Coon Rapids prevents travel any further to the north.
Just upstream of the dam is the
Ford Parkway Bridge.
On August 2, 2007, Lower St. Anthony Falls Lock and Dam gates were adjusted to lower the water level of the Mississippi by 2 feet to assist in the recovery efforts of the victims of the
I-35W bridge collapse (sometimes called Bridge 9340).
Further Information
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