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Topic: Mississippi river delta


  
  Mississippi Delta
From Saint Paul to the junction of the Missouri River, the Mississippi is generally 300 to 600 m (1000 to 2000 ft) wide, with 29 dams and locks that have been built to provide a navigation channel 2.7 m (9 ft) deep.
The Ohio River supplies nearly half of the Mississippi's flow, and from Cairo to New Orleans the river is generally 1000 to 1600 m (3000 to 5000 ft) wide with a navigation channel 2.7 to 3.7 m (9 to 12 ft) deep.
The portion of the river south of Baton Rouge is navigable by oceangoing vessels, and Baton Rouge and New Orleans are seaports.
www.ovayonda.com /photogallery/mississippi_delta.htm   (1437 words)

  
 Uniformitarianism in the Mississippi River Delta   (Site not responding. Last check: 2007-10-20)
For the Mississippi, the river mouth is the point where the seaward flowing water leaves the confines of the river channel and flows into the Gulf of Mexico.
At the river mouth, current velocity is reduced, resulting in the deposition of coarse-grained sediments near the river mouth and deposition of the fine-grained particles further offshore.
In conclusion, the Mississippi River Delta is the result of sequences of channel meanders and migrations, river mouth progradations, and delta platform growths followed by river channel and delta abandonment.
www.cox-internet.com /coop/deltawebpage.html   (1657 words)

  
 Teachers' Domain: The Mississippi River Delta
Deltas consist of fine silt, sand, and clay particles that originate far upstream and settle when the river water mixes with seawater.
The Mississippi River stretches 3,780 kilometers (2,350 miles) from its headwaters in Minnesota to the Gulf of Mexico, and transports a half-billion tons of sediment each year.
To address this unfolding crisis, government agencies are debating whether to maintain the present course of the river and work to ameliorate its water flow and sediment distribution, or, more radically, to divert the river, which would create a new delta and substantially increase the size of wetlands over the long run.
www.teachersdomain.org /6-8/sci/ess/earthsys/missdelta/index.html   (811 words)

  
 Mississippi River Delta Basin
Each Mississippi River deltaic cycle was initiated by a gradual capture of the Mississippi River by a distributary which offered a shorter route to the Gulf of Mexico.
The Mississippi River Delta Basin comprises approximately 521,000 acres of land and shallow estuarine water area in the active Mississippi River delta.
The Mississippi River levees to the north, and associated erosion control and channel stabilization measures extending to its mouth, also preclude the possibility of a naturally occurring crevasse or change in the river's course.
www.lacoast.gov /geography/basins/mr   (956 words)

  
 Arkansas Delta and Mississippi Delta geography & Mississippi River Flood of 1927 history
The most recent of the deltaic lobes is also referred to as the "delta" or sometimes the "modern" or "bird's foot" delta and is the area below New Orleans at the present mouth of the river where the channel forks into the various passes.
The dynamic character of the Delta's ever-changing natural processes are found in a variety of fascinating events-the New Madrid earthquakes of 1811-1812, the devastating flood of 1927, and the geologic curiosity of Crowley's Ridge.
The southeastern lowlands are comprised of the Gulf Coastal Plain, the Mississippi Alluvial Plain (the Delta), and Crowley's Ridge.
www.deltaculturalcenter.com /geography   (1523 words)

  
 NOW with Bill Moyers. Science & Health. Losing Ground - Delta Overview | PBS
NOW presents the story of the disappearing delta in two parts: "Losing Ground," uncovers how one of the biggest civil engineering projects in U.S. history — the leveeing of the Mississippi River — has brought Louisiana and the nation to the brink of what could be the most costly environmental disaster in history.
In fact, the Mississippi is one of the largest watersheds in the world, covering more than 1.2 million square miles and stretching, in its entirety, 2,350 miles from its headwaters to the Gulf of Mexico.
The construction of an extensive levee system along the Mississippi River from the 1950s to the 1970s, with the goal of maintaining navigation and reducing the flooding of adjacent homes and businesses, has prevented the coastal wetlands from receiving their regular nourishment of riverine water, nutrients, and sediment, a diet critical to wetland survival.
www.pbs.org /now/science/delta.html   (1267 words)

  
 Mississippi River Delta - Wikipedia, the free encyclopedia
The old delta lobe would begin to retreat as the gulf advanced, forming bayous, lakes, bays, and sounds.
Build-up of the Gulf of Mexico shoreline due to the outflow of the Mississippi River has been occurring in a periodic fashion since the late Jurassic period.
Geology of the Mississippi River deltaic plain, southeastern Louisiana.
en.wikipedia.org /wiki/Mississippi_River_Delta   (881 words)

  
 Gulf Coast's Mississippi Delta
The Mississippi delta region—with big population centers such as New Orleans—represents one of the most vulnerable regions of the Gulf Coast.
The coastal wetlands associated with the Mississippi River delta make up nearly 40 percent of the total coastal salt marsh in the lower 48 states of the U.S. These wetlands are disappearing at an average rate of 25 square miles per year, about 50 acres each day.
Although subsidence is a natural process, human interference with river and sediment flow and withdrawal of groundwater have exacerbated it.
www.ucsusa.org /gulf/gcplacesmis.html   (536 words)

  
 Cooperative Farming in Mississippi   (Site not responding. Last check: 2007-10-20)
The Lower Mississippi River Delta Region is defined as a 219-county strip along the Mississippi River in Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, and Tennessee.
Delta Cooperative Farm at Hillhouse, Mississippi, was probably the only place in Mississippi at the time where fl and white children received roughly equal educational opportunities.
Delta Cooperative Farm recruited a nurse, Lindsey Hail, who had earned her R.N. at Massachusetts General Hospital, and Dr. David Minter, a recent graduate of the University of Pennsylvania Medical School, to provide medical care.
mshistory.k12.ms.us /features/feature58/coopfarming.htm   (2330 words)

  
 SRL-2 - Mississippi Delta   (Site not responding. Last check: 2007-10-20)
This is a radar image of the Mississippi River Delta where the river enters into the Gulf of Mexico along the coast of Louisiana.
The migratory nature of the delta forms natural traps for oil and the numerous bright spots along the outside of the delta are drilling platforms.
The main shipping channel of the Mississippi River is the broad red stripe running northwest to southeast down the left side of the image.
southport.jpl.nasa.gov /pio/srl2/sirc/captions/srl2-delta_cap.html   (307 words)

  
 Metroblogging New Orleans: The Delta vs. the delta
The river delta, as I have always understood it as a historian, native of the region and the wife of an environmental scientist, is an inverted triangle with the tip at the mouth and the wider base ending around Memphis, roughly encomapssing the richest areas of the alluvial floodplain.
when rivers have more water than they can carry between their banks, they flood the low side, causing aluvium, those sediments of sand and clays carried by the river, to be deposited over the floodplain as the waters recede.
Rivers are living things and unless you turn them into lakes with a series of locks and dams, they pretty much do their thing.
neworleans.metblogs.com /archives/2005/10/the_delta_vs_th.phtml   (2012 words)

  
 Mississippi, river, United States: The Mississippi Delta
After receiving the Arkansas and Red rivers, the Mississippi enters a birdsfoot-type delta, which was built outward by sediment carried by the main stream since c.
Indications that the Mississippi River might abandon this course and divert through the Atchafalaya River led to the construction of a series of dams, locks, and canals by the U.S. Army Corps of Engineers.
Regarding the delta, environmentalists and those in the seafood industry are concerned by the loss of 25–45 sq mi (65–104 sq km) of marsh a year; fish and wildlife populations are threatened as their natural habitat slowly disappears.
www.factmonster.com /ce6/us/A0859679.html   (255 words)

  
 Delta Queen - Mississippi Queen - American Queen - River Barge - River Explorer - Mississippi River Front - Cape ...   (Site not responding. Last check: 2007-10-20)
The river is viewed as the Upper Mississippi River - from Minneapolis-St. Paul to the confluence of the Ohio River at Cairo, Illinois, and the Lower Mississippi River - from Cairo to New Orleans, Louisiana.
Cape Girardeau is 51 river miles north of the confluence of the Ohio and Mississippi Rivers.
The Mississippi River is then free flowing from near Alton, Illinois south to the Gulf of Mexico.
rosecity.net /river   (424 words)

  
 ASTER Image Gallery: Mississippi River Delta
As the Mississippi River enters the Gulf of Mexico, it loses energy and dumps its load of sediment that it has carried on its journey through the mid- continent.
As one part of the delta becomes clogged with sediment, the delta front will migrate in search of new areas to grow.
The area shown on this image is the currently active delta front of the Mississippi.
asterweb.jpl.nasa.gov /gallery/gallery.htm?name=Mississippi   (167 words)

  
 Athena Review Image Archive: Rivers seen from space: Mississippi River delta   (Site not responding. Last check: 2007-10-20)
As the river meets the Gulf, it loses velocity and dumps its sediment in an expanding fan-shaped, or roughly triangular-shaped zone called a delta (named for the Greek letter shaped like a triangle).
The specific form at the outer mouth of the Mississippi where its distributaries spread out and sediments expand into the sea is also sometimes known as a "bird's foot delta." The river's currents are notably strong to create this deltaic configuration.
The accumulation of sediment is ever-changing, and the Mississippi's primary channel shifts frequently around in the delta.
www.athenapub.com /rivmiss2.htm   (219 words)

  
 SEMP - Significance of Mississippi River Delta “Mud Lumps” to “Mud Volcanoes” and the New ...
Mississippi delta mud lumps can “rise suddenly enough to lift a ship as it passe[s], and they usually [have] a volcano-like cone spewing gasses and liquid mud,” wrote John M. Barry in his 1998 epic “Rising Tide: The Great Mississippi Flood of 1927 and How It Changed America”.
One vast arm of the Mississippi River extends northeast, draining regions as far east and north as the state of New York.
She examined several loops of the Mississippi River in this region that have been abandoned by the river in the past 2,400 years and used radiocarbon techniques to date the organic matter found in sediments at different levels.
www.semp.us /biots/biot_313.html   (2104 words)

  
 GulfBase - Mississippi River
The Mississippi River is one of the world's major river systems in size, habitat diversity and biological productivity, with a subtropical delta in Louisiana and flowing into the Gulf of Mexico.
With 3,705 km, it is the longest and largest river in North America, third longest river in the world, the second in watershed area and fifth in average discharge.
The river hosts 278 fish and mussel species, and is included in the flyway of 40% of North America’s duck, goose, swan and eagle populations.
www.gulfbase.org /bay/view.php?bid=mississippi   (319 words)

  
 Christopher Morris: Finding Louisiana: La Salle’s Encounter with the Mississippi River Delta plain
He could not tell the difference between a barrier island and a river channel; as he sailed along the Texas coast La Salle felt encouraged at the sight of each island, ultimately identifying those at Matagorda Bay as the ones he had seen two years earlier at the mouth of the Mississippi River.
Finally, it has been argued that he never intended to find the Mississippi River, that he knew where it was all along but “falsified the geography” in his report to officials in France, placing it well into Spanish territory and proximate to the Mexican silver trade, which he hoped to intercept.
Had he known for certain that the Mississippi River did not flow into Mexico La Salle nonetheless would have argued before French officials that a colony be established at its mouth as a base for organizing expeditions up the Red and Missouri Rivers and into Mexico, which is precisely what his successors did argue.
www.sochistdisc.org /2004_articles/morris.htm   (7853 words)

  
 USGS Landsat Project
The delta marks the termination of the Mississippi River as it deposits sediments into the Gulf of Mexico in Louisiana.
Indications that the Mississippi River was about to abandon its current course and divert through the Atchafalaya River led the U.S. Army Corps of Engineers to construct of a series of dams, locks, and canals.
The main visible change to the birdsfoot portion of the delta in the 2003 image is the emergence of new marsh vegetation.
landsat.usgs.gov /gallery/detail/389   (927 words)

  
 Mississippi Delta
The Mississippi flood plain along the western edge of the state has been built up by excessive floods.
North of Vicksburg it is a leaf shaped plain with an average width of 65 miles.
This region between the Mississippi and Yazoo rivers is the Yazoo Basin, or Delta, one of the most fertile areas in the
www.bolivar.lib.ms.us /mississippi_delta.htm   (179 words)

  
 Test your Knowledge - Mississippi River - Sierra Club
What we call headwaters is only a selection from among the innumerable sources which flow together to compose it.
Although he lived most of his adult life in England, T.S. Eliot was born in in St. Louis, Mo., near the banks of the Mississippi River.
Mississippi River Delta Blues is the title of an album by which artist?
www.sierraclub.org /spotlight/mississippi_river/quiz_people_answers.asp   (214 words)

  
 Delta Themes - Lower Mississippi Delta Region - National Park Service
This section contains concepts for preserving, protecting, and presenting to visitors the heritage resources of the Lower Mississippi Delta Region.
The concepts are drawn from the "Stories of the Delta" and the historic sites, museums, festivals, and natural areas that help tell those stories.
The People: Encountering the Cultural Diversity of the Lower Mississippi Delta Region
www.cr.nps.gov /delta/themes.htm   (91 words)

  
 NOW . Science & Health. Losing Ground - New Orleans and the Delta Overview | PBS
Three years ago this month, NOW presented a two-part story on the disappearance of the Mississippi River delta.
And, as the coast of Louisiana slipped away, tens of thousands of lives were at risk from a devastating hurricane — that came in the shape of Katrina.
The crisis in the delta has now reached catastrophic levels with far-reaching environmental, human, and economic consequences.
www.pbs.org /now/science/neworleans.html   (1385 words)

  
 Mississippi River Delta, Tunica Mississippi, Helena Arkansas Keziah Originals Online Galleries
Mississippi delta country is life in slow motion, a step out of time compared to the whirlwind of activity in larger cities and towns.
Certainly it paces itself with the natural order of the flowing Mississippi, where time seems a little less important and schedules are more flexible, welcoming strangers who come to the area with an open heart, a firm handshake, and abundant smiles.
On a recent trip to the delta regions in the south, it seemed a little odd to see the changes taking place in the small town of Tunica.
www.keziahoriginals.com /galleryDELTA.htm   (237 words)

  
 Delta Queen Steamboats - Mississippi River Cruises
She is to the American rivers what great legendary ocean liners such as the Ile de France, Mauretania or the SS United States were to Transatlantic travel.
Admire the Delta Queen’s rich woodwork, the soft glow of her stained glass transoms, her glittering crystal chandelier and antique furnishings.
The Mississippi Queen is an elegant modern steamboat with a Victorian atmosphere.
www.cruiseshopping.com /DeltaQueen/delta-queen.htm   (619 words)

  
 ScienceDaily: Sperm Whales Drawn To Waters Off Mississippi River Delta
Davis said coldwater eddies and the outflow of nutrients from the Mississippi River may enhance the production of food for these marine mammals and draw the animals nearer to coastal waters.
The Mississippi Delta region of the Gulf also has water that's several thousand meters deep within 50 or 60 miles of the coast, he said, and sperm whales are typically found in these deeper waters along the continental shelf.
At once an incredible adventure narrative and a penetrating biographical portrait, The River of Doubt is the true story of Theodore Roosevelt’s harrowing exploration of one of the most...
www.sciencedaily.com /releases/2001/05/010525072138.htm   (1863 words)

  
 MWP Writer News (Dec. 9, 2003): CFP: Delta Blues Symposium X: The 1950s
The Department of English and Philosophy with the assistance of the Department of Music, Department of Theatre, and Office of the President at Arkansas State University B Jonesboro campus is sponsoring its tenth Delta Blues Symposium on 25-27 March 2004.
We welcome presentations on any aspect of Delta life (art, education, folklore, history, music, literature, politics, and sociology) and are particularly interested in proposals which focus on the seven-state Mississippi River Delta and its culture during the 1950s.
The Delta Blues Symposia have provided opportunities for scholars, artists, performers, and the general public with an interest in the blues and in the Mississippi River Delta to come together to share insights, discuss issues, and celebrate a regional culture.
www.olemiss.edu /mwp/news/2003/2003_1209_cfp_deltablues.html   (299 words)

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