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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.
This is a list of locks and dams of the Ohio River, which begins at the confluence of the Allegheny and Monongahela rivers at The Point in Pittsburgh, Pennsylvania and ends at the confluence of the Ohio River and the Mississippi River, in Cairo, Illinois. A map and diagram of U.S. Army Corps of Engineers operated locks and dams on the Ohio River.
The Point Pleasant Formation is the oldest rock unit exposed at the surface in Ohio and formed during the Late Ordovician, outcropping along the Ohio River near Cincinnati. The formation records a transition from shallow-water limestone reef formation to a deeper water environment, marked by overlying shale and limestone, which form the ...
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 Mill Creek is a stream in southwest Ohio. It flows 28.4 miles (45.7 km) [1] southwest and south from its headwaters in Liberty Township of Butler County through central Hamilton County and the heart of Cincinnati into the Ohio River just west of downtown. The section of Interstate 75 through Cincinnati is known as the Mill Creek Expressway.
The Cincinnati Arch formed during the Silurian due to gentle folding and upwarped parts of the region above the water level, separating Kentucky into two geologic basins. The upwarping of the arch continued into the Devonian , which is supported by the lack of Early Devonian rocks in central Kentucky where the arch formed.
Ohio River Troy Township and Skillman: 1966 ... Cincinnati and Covington: 1963 ... Map all coordinates using OpenStreetMap.
The Ohio River forms its southern border, though nearly all of the river itself belongs to Kentucky and West Virginia. Significant rivers within the state include the Cuyahoga River, Great Miami River, Maumee River, Muskingum River, and Scioto River. The rivers in the northern part of the state drain into the northern Atlantic Ocean via Lake ...