Alan Lomax Archive

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About Alan Lomax Archive

The filmwork of Alan Lomax is a resource for students, researchers, filmmakers, and fans of America’s traditional music and folkways. Shot throughout the American South and Southwest over the course of seven years (1978-1985) in preparation for a PBS series, “American Patchwork,” which aired in 1991, these videos consist of performances, interviews, and folkloric scenes culled from 400 hours of footage.

The videos available are currently drawn from these collections:

Mississippi Delta & Hill Country (1978):
Bluesmen; fife-and-drum ensembles; former muleskinners and railroad tie-tampers; and tall-tale reciters. Performers include Skip James collaborator Jack Owens, former Mississippi Sheik Sam Chatmon, diddley-bow player Lonnie Pitchford, fife legend Otha Turner, and R. L. Burnside in his first film appearance.

Appalachia (1982-1983):
Cloggers and buck dancers; bluegrass and string bands; white gospel groups; stories, folktales, and ballads from coal miners, tobacco farmers, and former bootleggers, filmed in Virginia, Tennessee, and Kentucky. Performers include Ray Hicks, Nimrod Workman, Tommy Jarrell, and Raymond Fairchild, Janette Carter and her brother Joe Carter (children of A.P. and Sara Carter), and the singers at the 1982 United Sacred Harp Convention in Holly Springs, Georgia.

New Orleans (1982):
Funeral parades; Mardi Gras Indians; the Dirty Dozen Brass Band; and scenes from Jazz Fest and Preservation Hall.

Smithsonian Folklife Festival (1983):
Folk artists from across the country at the Smithsonian Folklife Festival in Washington, D.C.

Coming soon:

Cajun Louisiana (1982-1983):
Cajun cowboys; string bands; zydeco groups; fiddlers, and scenes from the Cajun and creole Mardi Gras celebrations. Performers include Dennis McGhee; Dewey Balfa; Canray Fontenot; Michael Doucet; and Boozoo Chavis.

Arizona (1983):
Pascua Yaqui dancers; Norteño bands; Papagos rituals; Apache desert rodeos; and Tuscon’s Latino car clubs.

Johns Island, South Carolina (1983):
Spirituals, folktales, and children’s game songs from Janie Hunter of the South Carolina sea island, Johns Island.

Philadelphia breakdancing (1982):
Footage of an early hip-hop breakdancing troupe called the Disco Kings and Queens, shot in Philadelphia’s Market Square.

Brooklyn Giglio (1982):
Performances, hand-games, and the legendary carrying of the tower at the annual Giglio festival, celebrated by Italian-American descendents of the Italian city of Nola, in Williamsburg, Brooklyn

Subscribe to this channel on youTube and get the updates from the Alan Lomax Archive. You won’t regret it.

Find out more about Alan Lomax here

Wetlands could soon get carbon-credit money

Cara Bayles for the Daily Comet

A proposal that would allow companies to invest in coastal wetland-restoration projects could bring $5 billion to $15 billion into Louisiana over the next 40 years.

Tierra Resources, a small consulting group in New Orleans, began putting together the Restoration of Degraded Deltaic Wetlands of the Mississippi Delta methodology five years ago and got $150,000 from Entergy Corporation for the project about three years ago. Tierra has submitted the proposal, which explains how various coastal-restoration projects would translate to credits, to the American Carbon Registry.

The registry, a nonprofit group that develops and approves carbon offsets, already has several programs that allow companies wishing to counteract pollution to purchase carbon credits. Those credits bankroll projects — such as reforestation and agriculture projects — that take carbon dioxide out of the atmosphere. But this would be the first in the world to use wetlands for those purposes.

“The interesting thing about this methodology is that it’s broad and flexible,” said Mary Grady director of marketing for the registry. “Instead of just saying you can plant a certain kind of tree, there are various hydraulic methods you can implement. That’s never been done before in carbon-offset history.”

Carbon-credit programs are voluntary in the U.S. and are much more popular internationally. Even so, Grady said 3 million tons worth of carbon were traded, retired or contracted in the American market last year.

The program will still need to pass a peer-review process. It was released for a month-long public comment period Wednesday and has already garnered attention from interested companies and environmental advocates, according to Sarah Mack, president of Tierra Resources.

“This methodology is basically a recipe for how to implement and monitor the program,” said Mack, who anticipates the program will pass the approval process by May. “It was released at 8 this morning, and by 9, I was getting a bunch of emails and phone calls from different entities.”

Entergy paid for the program through its shareholder-sponsored Environmental Initiative Fund, according to company spokesman Mike Burns.

Since 2001, the company has committed to keep its annual carbon footprint at or below the year 2000 levels. And according to its 2010 year-end report, the company exceeded a five-year commitment made in 2006 to keep its cumulative emissions at 20 percent below 2000 levels.

“We have billions of dollars in assets, millions of customers and thousands of employees in the Gulf Coast region,” Burns said. “It’s obvious why we would be involved in promoting restoration of wetlands and preventing climate change, which is causing sea-level rise and affecting the coast.”

In Terrebonne and Lafourche parishes, where wetlands are “dying quickly,” the program could make a big difference in paying for future coastal-restoration projects, according to Val Marmillion, managing director of America’s Wetland Foundation.

“What worries us most is funding and financing coastal restoration. We as an organization have tried to find creative ways to finance these projects,” said Marmillion, citing the state’s estimate that a comprehensive, 50-year project to save the coast would cost $50 billion. “In Terrebonne Parish, we have most of the dying wetlands in the most dying part of the country. I think this could be really significant for getting landowners to bring back their lands and getting these incentives on the world market.”

Mack said her preliminary studies suggest that 4 million acres in the Mississippi Delta were eligible for remediation.

Source

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Cara Bayles can be reached at 857-2204 or at [email protected]

New Mississippi River tourism trail announced

By Adrian Sainz for AP

MEMPHIS, Tenn. (AP) — Tourism officials on Friday launched the new Great River Road Trail, a self-guided driving tour covering 240 miles through six counties and several small towns in West Tennessee.

The trail is made up of existing tourist attractions along the Mississippi River, including museums, parks, historic homes, nature trails and Civil War sites.

About 60 markers will line the trail, suggesting that visitors exit their cars and spend money at the museums, restaurants and shops in Shelby, Tipton, Lauderdale, Dyer, Obion and Lake counties. The trail is connected to the Great River Road National Scenic Byway, a 10-state route starting in Minnesota and ending at the Gulf of Mexico.

“The new byway encompasses virtually everything that’s touched the Mississippi River,” said Regena Bearden, vice president of marketing at the Memphis Convention & Visitors Bureau. “Memphis visitors will be able to discover even more of our cultural gems for a truly authentic experience.”

Officials hope the trail — the eighth of 16 self-guided driving tours in Tennessee — will add to the roughly $13 billion economic impact of tourism on the state.

They also acknowledge that the self-guided trails are an inexpensive way to spur tourism, mainly because the sites and attractions along them already exist. A $300,000 grant from the Tennessee Department of Transportation will pay for the markers. The only other expense is for making brochures detailing the different attractions and their locations.

“We have taken these 16 trails that are across the state and we have gone in, done the work for the visitor, and you have this wonderful trail full of hidden jewels that are going to bring people back to Tennessee,” said Marty Mabry, the West Tennessee regional manager for the state’s Department of Tourism Development.

The trail begins at the welcome center on Riverside Drive in Memphis, but visitors can choose to start their trip at any site along the trail. Visitors who stop at the welcome center in Memphis can pick up brochures, maps and coupons before driving out.

Stops along the trail include the Alex Haley Museum and Interpretive Center in Henning, which includes the childhood home of the author who wrote “Roots: The Saga of an American Family”; Memphis’ Mud Island, which has several parks and a scale model of the lower Mississippi River; and Reelfoot Lake in northwest Tennessee, which is home to American bald eagles and some excellent fishing and hunting as well.

Well-known people also are honored along the trail, which includes the hometowns of world-renowned clown Emmett Kelly Jr. (Dyersburg), the late soul singer Isaac Hayes (Covington), and blues guitarist Sleepy John Estes (Ripley).
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The Great River Road National Scenic Byway and Trail: http://www.tntrailsandbyways.com

Source

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During historic flood, Mississippi River tried forming new channels, costing millions in fixes

AFP and The Republic

MEMPHIS, Tenn. — Since the waters from this spring’s floods receded, officials have identified places where the Mississippi River tried to carve out new channels and change course.

From northwest Tennessee to Louisiana, the Mississippi tried to cut through river bends and remove parts from islands during the historic flood.

Officials have found that the river washed out riverbanks, undermined some levees and buckled the concrete revetment installed by the Army Corps of Engineers to hold banks in place, according to The Commercial Appeal (http://bit.ly/pdvyLe).

For example, the river tore out a half-mile-wide chunk of land at President’s Island in Memphis and left water and flocks of geese on a place where cotton formerly grew.

“I couldn’t believe it,” said James Parker, crew chief for the Memphis and Shelby County Port Commission. “I thought it was going to cut all the way through (the island).”

The flood of 2011 reached historic levels in Memphis, which saw the Mississippi fall about a foot short of the record crest of 48.7 feet set in 1937. The National Weather Service recently set the official crest of the flood at 48.03 feet on the Memphis gauge, slightly higher than the initial estimate of 47.8 feet.

Officials say the corps’ $13 billion flood-control system along the river largely worked, preventing an estimated $62 billion in damage up and down the Mississippi. Officials think that any rerouting of the main river channel today could reverse decades worth of engineering by the corps, destroy property, leave ports high and dry and render the river unfit for navigation by barges.

Corps officials estimate it will cost $222.5 million to undo the damage caused by the river as it tried to create new channels during the flood. That is in addition to the projected $327.7 million it will take to fix flood-damaged levees, the $157.4 million worth of flood-related dredging needed and the estimated $70.6 million required to restore spillways and similar structures.

The U.S. House approved $1 billion in emergency appropriations for the corps in the energy and water bill to help pay for flood damages. The Senate has not approved any funds.

If Congress doesn’t provide any money, the corps will have to shift funds it already has to pay for the work, spokesman Bob Anderson said, reducing the amount of repair that could be done.

During the flood, two of the most urgent “bank failures” happened in Tennessee.

On the northeastern edge of Presidents Island, the Mississippi attempted to slice through a half-mile-wide section of riverbank and dig a channel a mile long into the island.

Another large bank failure occurred in Lake County, Tenn., about 130 miles upriver from Memphis. The river breached a spur levee and tried to cut across a bend, creating a broad channel east of the current one.

“This has destroyed thousands of acres of farmland that we will not be getting taxes on,” said Lake County Mayor Macie Roberson.

Corps officials say they’re confident that if properly repaired, their system can continue to keep the river manageable.

“The river is the control,” said Larry Banks, a retired hydraulics engineer who worked with the corps in Vicksburg, Miss., for 37 years. “The works of the corps can tickle it a little bit and keep it manageable.”

Source

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More from Tom Charlier at The Commercial Appeal

Mississippi oyster harvest could be lost

By HARRY R. WEBER for Associated Press

PASS CHRISTIAN, Miss. (AP) — Mississippi oystermen can’t seem to catch a break.

Over the years, the industry has been damaged by Hurricane Katrina, cheap imports, high gas prices and the perception Gulf oysters weren’t safe to eat because of the BP oil spill.

Now, the upcoming harvest season may be lost. Oysters, which thrive in salt water, are dying in large numbers because of the fresh water that poured in from spillways opened to take pressure off levees protecting cities from the rising Mississippi River this summer.

The oyster harvest, which usually runs from October to April, could be restricted or canceled altogether to give the oysters a chance to recover.

“Giving the entire reef a break for this season would be an option,” said Joe Jewell, assistant director of fisheries for the Mississippi Department of Marine Resources.

The agency expects to make its recommendation next month; the final decision is with a five-member commission appointed by the governor to represent seafood processors, environmental organizations, charter boat operators and fishermen.

Oystermen, seafood processors and restaurants that cater to customers who enjoy the local catch are waiting in agony.

Jerry Forte, a Pass Christian seafood dealer who mainly sells shrimp and oysters to shops, said he won’t make any money if the oyster harvest is a wash.

“You can’t survive on nothing,” Forte said. “Your bills still come in, but you don’t make no money.”

Jennifer Jenkins, a manager at Crystal Seas Oysters in Pass Christian, which processes oysters and supplies them to restaurants, said her business was already off roughly 25 percent. And the company is still fighting for money from the fund set up by BP PLC to compensate victims of last year’s oil spill.

“We haven’t had a normal year here since Katrina,” Jenkins said. The hurricane struck Aug. 29, 2005, wiping out vast stretches of the Mississippi coast in addition to the horrific damage done to New Orleans.

Crystal Seas Oysters can pull oysters from its dock in Louisiana and buy oysters in Texas, but some customers prefer to buy locally harvested oysters, Jenkins said. And, she added, “once you start paying freight, it’s just a bigger expense to incur.”

Forte said he doesn’t even “fool with out-of-state oysters because you can’t make any money like that.”

“You just try to keep your head above water until times are better,” Forte said.

Oysters are a stationary species, and that is why they were hit hard when record amounts of fresh water headed down the Mississippi River were diverted into Lake Pontchartrain and from there into Mississippi Sound after the Bonnet Carre Spillway in Louisiana was opened in May. Shrimp, finfish and crabs are mobile and can seek saltier water, so they weren’t affected as much.

“When one of these events occur, it causes a domino impact through the fisheries,” Jewell said. “The oyster fishermen tend to feel those impacts much more than any other components of the seafood industry.”

Jewell said field crews have been out in recent weeks assessing the impact on Mississippi oyster beds. They have reported a 50 percent to 65 percent mortality rate in some areas, and a 90 percent to 95 percent mortality rate in others. Pass Christian has seen an impact, while the most significant impact has been on the reefs in the far western Mississippi Sound, including the St. Joe and Waveland areas, Jewell said.

“In the years to come, nature is healing itself and there may be the potential for next year to have an increased harvest,” he said. “But this year coming, we’re going to see a significant reduction in harvest. There’s no way around that.”

In an average year, the harvest in Mississippi produces roughly 300,000 to 350,000 sacks of oysters, according to Jewell. With no major production during the oil spill because of the perception beds were tainted, only about 35,000 to 40,000 sacks were harvested last fall, he said.

Other options could be to have a limited season, allow both dredging and tonging but with restricted sack limits, or perhaps not allow dredging. Tonging involves using a set of tongs to scoop oysters off the bottom of the Mississippi Sound. Dredging involves using a basket attached to a toothed bar. The basket is dragged by boat over a reef and oysters are scraped off the bottom by the bar, caught in the basket, and then hauled aboard a boat, according to the DMR’s website.

In Louisiana, officials took precautions to try to limit the damage to oyster beds there. They closed two oyster harvesting areas that were receiving large amounts of fresh water intrusion. They also announced that oysters in some areas east of the Mississippi River could be relocated from beds that were to be inundated with fresh water to other seed grounds or oyster leases out of the way of the flood waters coming through. A special permit was required.

Roughly 13 million pounds of oysters are harvested in Louisiana in an average year, according to the Louisiana Department of Wildlife and Fisheries. Oyster beds saw a substantial impact from the fresh water, though official mortality numbers are not available yet, spokeswoman Olivia Watkins said. The process of evaluating the situation there is continuing.

Byron Encalade, president of Louisiana Oystermen’s Association, said he believes coastal erosion and the oil spill had a much greater impact on oyster harvesting in southern Louisiana than the recent fresh water did.

Back in Pass Christian, along the Gulf of Mexico, residents and businesses have experienced numerous shocks in recent years to the fragile oyster industry.

“At some point in time you just throw your hands up in the air and say, ‘We’re going to do this again?’” Jenkins, the Crystal Seas Oysters manager, said with a laugh.

Source (by way of Google News)

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Silt Buildup Muddies Trade on River

After Floods, Extra Sediment in the Mississippi Trips Up Shippers, Which Want the Government to Spend More on Dredging

By Cameron McWhirter for the WSJ

PAULINA, La.—Historic flooding this year carried an estimated 60 million cubic yards of sediment down America’s largest river system, transforming the winding lower Mississippi into a dangerous obstacle course for large commercial ships and raising transportation costs.

Shippers of grain, oil, coal and other commodities now want the Army Corps of Engineers to spend an additional $95 million on dredging to fix the problem. Mother Nature’s timing couldn’t be any worse, with record floods hitting just as the federal government is seeking ways to save money. The Corps budget this year has allocated less to dredging than last year.

The Mississippi River is a major thoroughfare for commerce, ferrying key American exports, including grain, corn and soybeans, and imports such as steel, rubber and coffee. A third of the nation’s oil comes up the river to refineries in Louisiana.

But the silt brought by the recent flooding has made the river more shallow, which translates to lighter cargo loads and more trips, raising costs. River pilots earlier this year warned ships to lighten loads to meet new restrictions on draft—the distance between the waterline and the ship’s bottom—from 45 feet to 43 feet along sections of the lower Mississippi. The Big River Coalition, an industry group, estimates that on average each foot of lost draft costs shippers an extra $1 million per ship.

“It’s killing us,” said Jack Wells, president of Emerald International, a coal exporter based in Florence, Ky. Mr. Wells said he expected to lose $25 million in revenue and bear about $4 million in additional ocean freight costs because more ships are required and shipping down the river takes longer.

Heavy rains and melting snow this year have caused record flooding in many parts of the U.S., from Montana and Minnesota to Ohio and Pennsylvania and down to Louisiana. Farmland has been flooded, people have been evacuated, and the Corps estimates that along the Mississippi River alone it will have to spend an additional $1 billion to $2 billion to repair levees and floodways damaged by flood waters not seen since the 1920s.

The Mississippi River and its tributaries annually carry tons of silt down from as far away as Canada to the lower Mississippi. To keep the river navigable for large ships, the Corps spends millions of dollars every year to dredge. In past years, when it went over budget, the Corps shifted money from other projects to cover dredging, in what it calls “reprogramming.” This year, “we simply have no sources to reprogram from,” said Michael Ensch, chief of operations of the Corps’s lakes and rivers division.

Michelle Spraul, operations manager for the Corps’s dredging on the lower Mississippi, pores over charts from sonar readings every day to figure out where to send the dredges she has. “It’s a juggling act,” she said in an interview abroad a Corps dredge anchored in the river near Paulina, a small community west of New Orleans. In an average year, Corps dredges remove about 35 million cubic yards of silt from the lower Mississippi, Ms. Spraul said.

The dredging problem has been growing since late last year, when the Corps told shippers that it was likely to run short of funds for dredging of the lower Mississippi to the depths and widths they have come to expect.

The Corps also didn’t guarantee the widths of the river channels. During the floods, high water made navigation easier, but as levels now drop, silt clumped at bends along the river and at the Southwest Pass, a channel leading to the Gulf of Mexico, poses hazards. This shrinking of the river’s dimensions is like losing lanes on a highway, shippers say.

In fiscal 2010, the Corps spent $119 million to keep the lower Mississippi dredged. This fiscal year, the Corps budgeted $84 million. Shippers estimate that dredging to normal river depths and widths could cost more than $170 million.

The situation hurts U.S. competitiveness abroad by adding to the cost of exports and risks accidents that could shut down the river to large commercial traffic, according to industry, agriculture and shipping interests along the river and its tributaries.

“We need to start moving now before the situation gets out of control,” said Rick Calhoun, president of Cargo Carriers, a subsidiary of Cargill, and part of the Big River Coalition, which is pushing for the $95 million in additional dredging money.

So far the White House, locked in a showdown with Republicans on next year’s budget, says only that it is reviewing the situation. “The administration has not made a determination about whether a supplemental funding request is necessary,” said Meg Reilly, an Office of Management and Budget spokeswoman.

Efforts to get funding via legislation are moving through the House, but are far from passage.

Sen. David Vitter, a Republican from Louisiana, said he strongly supported more dredging funds but that any additional money would require reductions elsewhere in the federal budget for his Republican colleagues to come aboard. He wouldn’t say where those cuts should be, but noted that many Congressional leaders now think an emergency supplemental bill for recent floods and tornadoes is coming. Such a bill should include dredging money, he said.

Source

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Write to Cameron McWhirter at [email protected]

Scientists favor dividing Great Lakes, Mississippi

AP

TRAVERSE CITY, Mich. — No additional study is necessary to prove that separating the Great Lakes and the Mississippi River systems is the only way to prevent invasive species such as Asian carp from migrating between them and doing serious ecological and economic harm, a team of scientists said Thursday.

In a newly released paper, the scientists said opponents of severing the man-made link between the two watersheds were spreading myths, including that electric barriers in Romeoville are enough to stop the unwanted carp from entering Lake Michigan through the Chicago Sanitary and Shipping Canal.

The scientists say opponents also have claimed falsely that it’s too late to keep the carp out of the lakes, or they can’t survive in the lakes because of inadequate food and spawning habitat, or even if they do spread in the lakes they won’t do much damaged.

Their article in the Journal of Great Lakes Research urges Congress to approve legislation ordering the Army Corps of Engineers to quicken a study of whether to divide the two freshwater basins, now due for completion in 2015.

“The task at hand needs to be not if, but how to solve the problem,” said Jerry Rasmussen, a consultant and retired U.S. Fish and Wildlife Service invasive species expert.

Other authors of the paper included Richard Sparks of the National Great Rivers Research and Education Center in Godfrey; William Taylor, a Michigan State University fisheries specialist; and Henry Regier, a Great Lakes scientist at the University of Toronto.

Mark Biel, chairman of a business and industry coalition called UnLock Our Jobs that the scientists singled out for criticism, said their article was biased.

“The issues this report claims to address have been asked and answered repeatedly,” Biel said. “It’s time we move on to maintaining and improving current barriers as well as implementing comprehensive solutions across the region. Separation simply isn’t one of them.”

His group contends that dividing the basins or closing shipping locks would cost billions and devastate a regional economy that depends on movement of cargo on northern Illinois waterways. Businesses use the canals to move billions of dollars worth of goods, including coal to Joliet’s Midwest Generation plant.

Asian carp are voracious filter feeders that can reach 4 feet long and 100 pounds. Imported decades ago to gobble algae from Deep South fish farms and sewage treatment plants, they escaped into the Mississippi and have moved northward since. An electric barrier network on the Chicago Sanitary and Ship Canal in Romeoville is designed to bock their path.

State and federal agencies are using other methods to keep Asian carp out of the lakes, including stepped-up commercial fishing.

Rasmussen and his colleagues conducted no independent research for their paper but drew on reports by other scientists, including University of Notre Dame specialists who have reported detecting Asian carp DNA beyond the electric barrier.

The paper said the barrier, while helpful, isn’t strong enough to kill fish and cannot prevent downstream movement of fish eggs, larvae, invertebrates, parasites and bacteria. Studies also show that Asian carp would find abundant food in the Great Lakes, including the nuisance algae cladophora, and can survive throughout the region, they said.

“The Asian carp are going to whack the tributaries,” Taylor said. “They will change the food web and dominate our streams and nearshore regions in the Great Lakes basin.”

While attention has focused on Asian carp’s threat to the lakes, the Mississippi basin may be even more vulnerable to species moving southward, the paper said. The ecologically diverse river’s 260 fish species could be crowded out by newcomers from the Great Lakes such as the round goby, it said.

Placing a physical barrier between the two basins is the surest method of protecting them, Rasmussen said. But because it would be costly and take years to build, authorities should consider buying time with short-term measures such as creating hot-water pools or reducing oxygen levels in sections of the Chicago waterways to kill migrating organisms, he said.

“The longer you wait, the more species cross,” Sparks said.

Source

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Satellite Images Show Extent of Mississippi River Sediment

USGS

Satellite images show large amounts of sediment throughout coastal Louisiana as a result of flooding on the Mississippi River, according to recent U.S. Geological Survey and NASA data.

USGS and NASA are providing satellite imagery to the U.S. Army Corps of Engineers and the State of Louisiana to assist with the flood response efforts.

Mississippi Delta May 2011 | Image USGS/NASA

Mississippi Delta May 2011 | Image USGS/NASA

Satellite images show three large areas of sediment, or plumes, moving through the floodwaters across Louisiana. The opening of the Bonnet Carré water control structure caused a plume that is located in Lake Pontchartrain. Another plume was the combined result of the Morganza spillway being opened and flooding on the Atchafalaya River. The third plume can be seen where the Mississippi River meets the Gulf of Mexico, also known as the Mississippi Delta.

“The current focus is the protection of life and property but we are also trying to learn more about how events like this impact the coastal ecosystems,” said Phil Turnipseed, Director of the USGS National Wetlands Research Center. “If we can better understand how sediments move into the wetlands, then we could create more effective restoration projects.”

NASA provided the data from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument flying on NASA’s Aqua satellite in response to a request by the USGS National Wetlands Research Center in Lafayette, La. This is part of an ongoing commitment by NASA’s Applied Science and Technology Project Office at the John C. Stennis Space Center, Bay St. Louis, Miss., to use data from agency satellites to help communities address issues of concern, such as forest management and coastal erosion.

“NASA satellites like Aqua and the USGS-operated Landsat are crucial in providing information to help monitor the extent and the effects of natural hazards, like floods and hurricanes,” said Bill Graham, NASA researcher located at the Stennis Space Center. “These sensors allow managers to have a better perspective of regional impacts in a timely fashion.”

These images also illustrate the movement of fresh Mississippi River water into the salty water of Lake Pontchartrain, and ultimately into the Gulf of Mexico. The satellite images help scientists determine how fast the floodwaters are traveling through Lake Pontchartrain, and how water quality is changing throughout the system. These images were very helpful in tracking an algal bloom that occurred in the lake after the 2008 opening of the Bonnet Carré Spillway.

Wetland seasonal flooding is a natural event and is essential to the health of coastal wetland ecosystems. Extreme floods deliver high amounts of sediment and nutrients to the wetlands in central and southeast Louisiana. The Atchafalaya and Wax Lake Deltas are examples of the positive effects flooding can have on a growing delta

Source

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Winners and losers in the Mississippi floods

Suzanne Goldenberg for The Guardian

Twenty-five thousand people to lose their homes as small towns and farmland are put under water to save cities

The flooding on the Mississippi has been a season of cruel choices. Big cities – such as Baton Rouge and New Orleans – stay dry. Small towns and agricultural land are left to drown, sacrificing homes and crops.

The army corps of engineers, America’s official flood protection force, says it is all going to plan. The decisions taken today are a legacy of the great flood of 1927 when a series of levees constricting the Mississippi failed. About 500 people were killed. Half a million lost their homes. After that calamity, the army corps of engineers devised a system to relieve pressure on levees. Once the flooding reached a certain height, waters would be diverted to designated flood plains. Some of those areas were barely populated at the time.

But the long stretches between floods have blurred distinctions about the original purpose of the flood plains. On the upper reaches of the Mississippi, near the city of St Louis, a sprawling shopping mall has been built in an area officially designated as a flood plain. Downriver, in the swampy areas of Louisiana that are slowly starting to go under water, residents received regular warning notices.

At the weekend, for the first time since 1973, crews began opening the Morganza spillway. Over the coming days, engineers will gradually open up all its 125 gates, flooding up to 3,000 square miles of low-lying country and driving wildlife to dry land. About 25,000 people will lose their homes. The floodwaters could take months to recede, destroying a year’s crops – maybe more depending on the deposits left on the land. Some of those evacuated were advised they may never return.

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Morganza Floodway, 1973

As flood waters continued to surge through the Mississippi River watershed in May 2011, the U.S. Army Corps of Engineers weighed whether to open spill gates onto the Morganza Floodway. The floodway, designed to reduce water levels in the Mississippi during emergencies, was last open from April 19 to June 13, 1973, the only time it has ever been opened.

Morganza Floodway, 1973

Morganza Floodway, 1973

Morganza Floodway, 1977

Morganza Floodway, 1977

The top image shows water flowing through the floodway on May 5, 1973, as observed by Landsat 1. The bottom image from Landsat 2 shows the same area in 1977 without flooding. The images include near-infrared, red, and green wavelengths of light. Vegetation appears red, muddy water is greenish brown, clear water is blue-black, and bare soil is gray to tan. In the 1973 image, red areas within the floodway may include vegetation (red) tall enough to stand above the flood water.

The floodway lies on the west side of the Mississippi, about 35 miles (56 kilometers) north of Baton Rouge, Louisiana. It averages five miles (8 kilometers) in width and stretches 20 miles (32 kilometers) to the southwest. Completed in 1954, the flood control structure, or spillway, was built to relieve stress on levees further downstream by diverting excess water from the river into the Atchafalaya River Basin.

According to the Army Corps of Engineers, the spillway was designed to maintain a Mississippi River flow rate of no greater than 1.5 million cubic feet per second at Red River Landing. The spillway is roughly 4,000 feet (1,219 meters) long, includes 125 gated openings, and has the capacity to move roughly 600,000 cubic feet of flood water per second.

The Army Corps notes on its web site: “The decision to open the Morganza Floodway relies on current and projected river flows and levee conditions, river currents and potential effects on navigation and revetments, extended rain and stage forecasts, and the duration of high river stages. When river flows at the Red River Landing are predicted to reach 1.5 million cubic feet per second and rising, the Corps considers opening the Morganza Floodway.” At 7 a.m. Central Daylight Time on May 13, 2011, the Army Corps estimated flow rates were 1.449 million cubic feet per second.

The Mississippi River has the third largest drainage basin in the world., behind only the Congo and the Amazon. It drains 41 percent of the 48 contiguous United States, including all or part of 31 states and two Canadian provinces. Extreme floods along the Mississippi in 1927 floods led the U.S. Congress to pass to the Flood Control Act of 1928, authorizing construction of levees, floodways, and other landscape modifications to control the flow of the Mississippi River.

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