Ohio River - Wikipedia
The Mississippi, Ohio, Missouri, Illinois, and other rivers knit together the To extend the water's reach into the nation's interior, they began decades of canal building. .. Courtesy of the Geography and Map Division, Library of Congress for tens of thousands of people looking for new lives along the California, Mormon. Mississippi River, the longest river of North America, draining with its major tributaries Where these two mighty rivers meet, the Ohio is actually the larger; thus, .. in “Black Water” (), the paean to the river by California's Doobie Brothers. 10 U.S. states have borders along the Mississippi River, from There are also a number of large and small tributaries of the river, some of which include the Ohio, Missouri, and Red Rivers. had only estimated where the Mississippi would meet their border. Watercolor Map of United States and Alaska.
Grant —with that of the celebrated author Mark Twain. The Mississippi River basin and its drainage network. On the basis of physical characteristics, the Mississippi River can be divided into four distinct reaches, or sections. In its headwaters, from the source to the head of navigation at St.
PaulMinnesota, the Mississippi is a clear, fresh stream winding its unassuming way through low countryside dotted with lakes and marshes.
The upper Mississippi reach extends from St. Paul to the mouth of the Missouri River near St. Below the Missouri River junction, the middle Mississippi follows a mile km course to the mouth of the Ohio River.
Mississippi River | History, Physical Features, Culture, & Facts | szsizu.info
The turbulent, cloudy-to-muddy, and flotsam-laden Missouri, especially when in flood, adds impetus as well as enormous quantities of silt to the clearer Mississippi. Beyond the confluence with the Ohio at CairoIllinois, the lower Mississippi attains its full grandeur. Where these two mighty rivers meet, the Ohio is actually the larger; thus, below the Ohio confluence the Mississippi swells to more than twice the size it is above.
Minneapolis, MinnesotaMinneapolis, Minnesota, U. Louis, MissouriGateway Arch and downtown St. Physical features Physiography The geology and physical geography of the Mississippi drainage area are essentially those of the Interior Lowlands and Great Plains of North America.
Fringes also touch upon the Rocky and Appalachian mountain systems and upon the rim of the Canadian Laurentian Shield to the north. Rising in western uplands, notably in the foothills of the Rockies, rivers such as the RedArkansasKansasPlatteand Missouri remove considerable silt loads from the rolling expanses of the Great Plains. These tributaries meander and braid across a wide, gently sloping mantle of unconsolidated materials, laid down over rock beds of the Cretaceous Period i.
The sandy sediments, moreover, offer little resistance to erosionso that many of these rivers are only braided in their courses. Most of this group, including the KentuckyGreenCumberlandand Tennessee rivers, flows via well-defined valleys into the Ohio and thence into the Mississippi. The erosive capacity of these rivers varies in relation to the geologic structure of their basins.FS17 - Missouri Mississippi Ohio River Basin 4x Map "Map Mod Review"
These consist of harder rocks in the higher elevations and a softer sill of limestone of the Late Carboniferous Period i. The third contributory area of the Mississippi also differs from the other two. The upper Mississippi gathers its strength in a region marked by glacial action.
After the great ice sheets of the Wisconsin Glacial Stage had put down layers of debris across much of Minnesota, Wisconsin, northern Illinois, and northern Iowa, huge quantities of meltwater flowed south, washing channels through this debris. Today the upper Mississippi and its tributaries, the WisconsinSt. CroixRockand Illinois rivers, all trace the lines of these former sluiceways.
Pouring southward, the glacial meltwaters were joined by the proto-Missouri and Ohio rivers. The combined waters then enlarged the great north-south trough along which the lower Mississippi now flows. Some 1, miles 1, km long, this trough is 25 to miles 40 to km wide and bounded by escarpments rising up to feet 60 metres above the valley floor. Geologic studies have revealed that the floor of the glacial trough was later buried by a deep layer of material washed out from an ice sheet and dumped to a thickness of to feet 30 to 90 metres in the central section.
There, at the tip of the drainage funnel, millions of years of sedimentation have spilled out across the floor of the Gulf of Mexicoforming cones of sediment that total mi in radius and 30, square miles 77, square km in area.
The surface expression of the many sub-deltas is the Mississippi delta, with an area exceeding 11, square miles 28, square km. Stretching its distributaries into the gulfthe Mississippi once delivered some million tons of sediment there each year, most of it as silt. Valleys of some abandoned rivers can still be seen on satellite and aerial images of the hills of Ohio and West Virginia between Marietta, Ohioand Huntington, West Virginia.
As testimony to the major changes that occurred, such valleys are found on hilltops. A north-flowing river was temporarily dammed southwest of present-day Louisvillecreating a large lake until the dam burst. A new route was carved to the Mississippi.
Eventually the upper and middle sections combined to form what is essentially the modern Ohio River. Pre-Columbian inhabitants of eastern North America considered the Ohio part of a single river continuing on through the lower Mississippi.
The Indians and early explorers and settlers of the region also often considered the Allegheny to be part of the Ohio.
The forks the confluence of the Allegheny and Monongahela rivers at what is now Pittsburgh was considered a strategic military location. French fur traders operated in the area, and France built forts along the Allegheny River.
He traveled from Canada and entered the headwaters of the Ohio, traveling as far as the Falls of Ohio at present-day Louisville before turning back.
He returned to explore the river again in other expeditions. An Italian cartographer traveling with him created the first map of the Ohio River. La Salle claimed the Ohio Valley for France. InGreat Britain established the Ohio Company to settle and trade in the area. Exploration of the territory and trade with the Indians in the region near the Forks by British colonials from Pennsylvania and Virginia — both of which claimed the territory — led to conflict with the French. This appeased the Canadien British subjects but angered the Thirteen Colonies.
Lord Dunmore's War south of the Ohio river also contributed to giving the land north to Quebec to stop further encroachment of the British colonials on native land. The economic connection of the Ohio Country to the East was significantly increased in when the National Road being built westward from Cumberland, Maryland reached Wheeling, Virginia now West Virginiaproviding an easier overland connection from the Potomac River to the Ohio River.
The Falls were a series of rapids where the river dropped 26 feet 7. The river runs approximately miles km long, in the U. The confluence of the rivers offers vistas that seem endless.
The Illinois River is relatively shallow, just like the Mississippi. In addition, the Illinois River is a "managed" river, just as the Mississippi River is.
Missouri River[ edit ] The Missouri River is a long stream that originates in southwest Montana and flows southeasterly for 2, miles; passing through six states before finally entering the Mississippi River at St.
The Missouri River was one of the main routes for the watershed expansion of the United States during the 19th century. The river is a location with the capacity to provide enough water for over five million people.
At its widest point, it is one mile wide at Smithland dam. The average depth is 24 feet deep which allows multiple species of fish to live there safely. The water is also home to species of fish ranging from catfish to certain species of salmon and trout. On average the Ohio River transports over million tons of cargo.
Typically, the cargo being shipped are energy resources such as coal.
Along with shipping energy resources, the Ohio River also creates energy with dams and other power generating facilities. There are 20 dams and 49 other power generating facilities on the Ohio River. The river also crosses through Oklahoma, Arkansas, and Louisiana where then it links into the Mississippi River. The Red River is home to many oil fields with oil and gas production being one of the river's major aspects.
The delta is home to massive amounts of wildlife, and attributed to the U. Over the last three centuries, the delta has continuously collapsed, due to human alterations of the river system.