2012年11月17日 星期六

ABC News: U.S.: Low Mississippi River Water Levels May Halt Barges

ABC News: U.S.
// via fulltextrssfeed.com
Low Mississippi River Water Levels May Halt Barges
Nov 17th 2012, 16:11

The gentle whir of passing barges is as much a part of life in St. Louis as the Gateway Arch and the Cardinals, a constant, almost soothing backdrop to a community intricately intertwined with the Mississippi River.

But next month, those barges packing such necessities as coal, farm products and petroleum could instead be parked along the river's banks. The stubborn drought that has gripped the Midwest for much of the year has left the Mighty Mississippi critically low â€" and it will get even lower if the Army Corps of Engineers presses ahead with plans to reduce the flow from a Missouri River dam.

Mississippi River interests fear the reduced flow will force a halt to barge traffic at the river's midpoint. They warn the economic fallout will be enormous, potentially forcing job cuts, raising fuel costs and pinching the nation's food supply.

"This could be a major, major impact at crisis level," said Debra Colbert, senior vice president of the Waterways Council, a public policy organization representing ports and shipping companies. "It is an economic crisis that is going to ripple across the nation at a time when we're trying to focus on recovery."

At issue is a plan by the corps to significantly reduce the amount of water released from the Gavins Point Dam near Yankton, S.D., a move to conserve water in the upper Missouri River basin also stung by the drought. The outflow, currently at 36,500 cubic feet per second, is expected to be cut to 12,000 cubic feet per second over several days, starting Friday.

Drought River Shipping.JPEG

AP

A barge powers its way up the Mississippi... View Full Caption
A barge powers its way up the Mississippi River Friday, Nov. 16, 2012, in St. Louis. A top Corps of Engineers official has ordered the release of water from an upper Mississippi River reservoir in an effort to avoid closure of the river at St. Louis to barge traffic due to low water levels caused by drought. (AP Photo/Jeff Roberson) Close

The Missouri flows gently into the Mississippi around a bend just north of St. Louis. From there, about 60 percent of the Mississippi River water typically comes from the Missouri. This year, because of the drought, the Mississippi is even more reliant on Missouri River water â€" 78 percent of the Mississippi River at St. Louis is water that originated from the Missouri.

The Mississippi is so low there now that if it drops another 5 feet, barge traffic may shut down from St. Louis to the confluence of the Ohio River at Cairo, Ill., perhaps as soon as early December. Barges already are required to carry lighter loads.

Major Gen. John Peabody, commander of the Mississippi Valley Division of the corps, said the reduced Missouri River flow will remove 2-3 feet of depth of the Mississippi at St. Louis. To help offset that, he has authorized an emergency release of water from an upper Mississippi River reservoir in Minnesota. But that will add just 3-6 inches of depth at St. Louis.

Corps officials responsible for the Missouri River say they have no choice but to reduce the flow. A congressionally-authorized document known as the Missouri River Master Manual, completed about a decade ago, requires the corps to protect interests of the Missouri River. What happens on the Mississippi as a result is incidental.

"We don't believe we have the authority to operate for the Mississippi River," said Jody Farhat, chief of the Water Management Division for the corps' Northwest Division.

Farhat said the drought is taking a toll on the upper Missouri River basin. Recreation is being hurt because the water is so shallow, she said. Indian artifacts normally under water are being exposed, making them prone to looters. And if the drought persists into next year as expected, hydropower could be impacted.

As a result, she said, water behind the reservoirs must be conserved rather than released.

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions

沒有留言:

張貼留言