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The system was renamed the McAlpine Locks and Dam in 1960 in honor of William McAlpine, who was the only civilian to have ever served as district engineer for the Corps of Louisville. At present, the normal pool elevation is 420 feet (130 m) above sea level and the drainage area above the dam is 91,170 square miles (236,000 km 2 ).
The Ohio River at Cairo is 281,500 cu ft/s (7,960 m 3 /s); [1] and the Mississippi River at Thebes, Illinois, which is upstream of the confluence, is 208,200 cu ft/s (5,897 m 3 /s). [66] The Ohio River flow is greater than that of the Mississippi River, so hydrologically the Ohio River is the main stream of the river system.
Looking SE from Falls of the Ohio Middle gate of 5 upper gates at McAlpine Dam. (There are 4 more such gates at the lower gate site, next to the LG&E Ohio Falls Generating Station.) These gates are called Tainter gates after their designer, Jeremiah Burnham Tainter (1836-1920). Each gate is 100 feet wide and 22 feet high.
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The Louisville and Portland Canal was a 1.9-mile (3.1 km) [1] canal bypassing the Falls of the Ohio River at Louisville, Kentucky.The Falls form the only barrier to navigation between the origin of the Ohio at Pittsburgh and the port of New Orleans near the Gulf of Mexico; circumventing them was long a goal for Pennsylvanian and Cincinnatian merchants. [2]
Fossil formations (Devonian Jeffersonville Limestone) found along the shores of the Ohio River. View of the fossil bed from the overlook. The park includes an interpretive center open to the public. In 1990, the Indiana state government hired Terry Chase, a well-established exhibit developer, to design the center's displays.
An early map of the Falls of the Ohio; Louisville, Kentucky is in the lower right The area is located at the Falls of the Ohio, which was the only navigational barrier on the river in earlier times. The falls were a series of rapids formed by the relatively recent erosion of the Ohio River operating on 386-million-year-old Devonian hard ...
The plant is located inside the Ohio Natural Wildlife Conservation Area and is considered a large impoundment hydro power plant. [3] The station was built after a canal and dam within the Ohio river in an attempt to allow boats to navigate the 8 ft vertical drop among the falls that spanned 2 miles wide. Production of the canal and dam began in ...