Search results
Results from the WOW.Com Content Network
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.
The geology of Ohio formed beginning more than one billion years ago in the Proterozoic eon of the Precambrian. The igneous and metamorphic crystalline basement rock is poorly understood except through deep boreholes and does not outcrop at the surface. The basement rock is divided between the Grenville Province and Superior Province.
Figure 1. This BLM map depicts the principal meridians and baselines used for surveying states (colored) in the PLSS.. The following are the principal and guide meridians and base lines of the United States, with the year established and a brief summary of what areas' land surveys are based on each.
The Erie Plain in Ohio, defined by Lake Erie and the Portage and Marshall Escarpments (in red). The Erie Plain is a lacustrine plain that borders Lake Erie in North America . From Buffalo, New York , to Cleveland , Ohio , it is quite narrow (at best only a few miles/kilometers wide), but broadens considerably from Cleveland around Lake Erie to ...
The Ohio water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units. These geographic areas contain either the drainage area of a major river, or the combined drainage ...
Incised valleys are mountain-valley-like features that commonly result from river down cutting into coastal plains and continental shelves in response to marine regression. They are the key evidence to identify sequence boundary on seismic profiles and outcrops.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Ohio_River_Valley&oldid=717598049"
The Ohio Valley is a sub region in Kentucky running 658 miles (1,059 km) long including parts of 25 counties and across five regions of the state. Over 45% of Kentucky's population live in counties that border the Ohio River , although those counties are only 16% of the state's land area.