Leaky Missouri levee highlights national problem
Thursday, April 28, 2011
POPLAR BLUFF (AP) — Floodwaters leaking past an old earthen levee in this river town highlight a larger problem threatening much of rural America: Scores of flood walls built decades ago by farmers are increasingly susceptible to failure.
Many of the barriers are little more than piles of compacted dirt that were constructed without help from engineers, mainly to protect crops. Now they shield entire communities, and they are managed by local authorities who have little to no money for repairs.
“You build them to the levels that you hope are adequate,” said Jeff Rolland, deputy police chief in Poplar Bluff, a southeast Missouri town of 17,000 people protected by just such a levee. “Unfortunately, extraordinary storms come along.”
That’s what happened this week after as much as 15 inches of rain fell on the region in four days, causing the Black River to climb out of its banks. The flood displaced more than 1,000 people and sent water over the Poplar Bluff levee.
The levee is one of more than 100 across the country listed as unfit for use in the government’s most recent report on the structures. The failing levees are in 16 states, including five in Ohio, five in Louisiana and 16 in Washington. As still more rain fell Wednesday, all eyes were on the flood walls and the rising water.
The Reorganized Butler County No. 7 levee at Poplar Bluff failed a federal inspection in 2008 after the Army Corps of Engineers found a host of problems.
Corps spokesman P.J. Spaul said there were buildings on the levee, including a house and garage, as well as trees large enough to create holes in the earth if they died and their roots rotted.
The levee was also crisscrossed by roads and cattle trails, creating low spots. It was pockmarked with animal burrows. And fences and locked gates prevented access for maintenance and inspections.
In addition, the inspector noted that earlier flood damage had gone unrepaired, and soil had been excavated from near the bottom of the levee, which could have contributed to dirt sliding down the side.
Because those problems were never addressed, the levee no longer qualifies for a corps program that provides money for flood-related repairs.
The recent heavy rain took a toll, allowing water to seep through the levee, pour over the top in 35 places and gush through a hole in the middle of the barrier.
Many rural levees are privately maintained and overseen by local boards or commissions with limited expertise and resources.
The quality of small-town levees varies greatly. Most are made of mounded dirt that has been sloped and then topped with grass to reduce erosion.
Others are more complex, with spillways, drainage systems and pumps. But for cities and private levee districts that are strapped for cash, levees are often little more than earthen berms, like the one at Poplar Bluff, about 130 miles south of St. Louis.
“People don’t realize the levee is there until the water starts rising,” said Tom Waters, chairman of the Missouri Levee and Drainage District Association. “The local districts do what they can, but sometimes it’s cheaper to be out of compliance and fix it yourself than be in compliance.”
The 2009 survey by Army Corps engineers identified 114 levees nationwide that were “unacceptable for operations and maintenance,” including three others in Butler County, 30 in Arkansas and 27 in California. The survey lists structure from Alamosa, Colo., on the Rio Grande, to the Bethlehem levee in the Pennsylvania town of the same name.
Two years earlier, the federal agency found 122 levees in similar condition.
Butler County Presiding Commissioner Ed Strenfel said the budgets of many levee districts “isn’t enough to do routine maintenance much less major repairs.”
Spaul acknowledged the huge tasks confronting the agencies.
“It’s kind of easy to look like you are finger-pointing,“ he said. ”I know what these levee boards go through.”
After Hurricane Katrina, Congress in 2006 gave money to the Army Corps to update its inventory of the federally maintained levees, which make up 14,000 miles of flood barrier across the nation.
But there’s no systematic oversight — or even a complete inventory — of the nearly 100,000 miles’ worth of private levees. Congress passed the National Levee Safety Act in 2007 and directed the Army engineers to account for all private levees, but no money was provided for the task.
“You can’t really generate any interest until right after a disaster,” said Stephen Verigin, a civil engineer in Sacramento, Calif., and member of the National Committee on Levee Safety. “If you don’t have an immediate failure in the recent past, it’s very difficult to get support.”
The levee safety committee made 20 specific recommendations, including creation of a National Levee Safety Commission that would help create and enforce uniform engineering standards and work with states to bolster local efforts. So far, no one has acted on those suggestions.
On Wednesday, Poplar Bluff and other southern Missouri towns endured more rain and the threat of tornadoes from the second severe storm system in as many days.
The good news, according to National Weather Service hydrologist Mary Lamm, was that Thursday and Friday should be dry, and the rivers should begin to recede.
But that doesn’t mean towns like Poplar Bluff are entirely out of peril.
“It’s still going to be a lot of strain on a lot of the levees, even when we got that final rain out of here,” Lamm said from Paducah, Ky.
Butler County Sheriff Mark Dobbs said it was too early to know how many homes and businesses had been damaged. “The water’s just getting deeper,” he said. “It was already bad. It’s just getting worse.”
Authorities have conducted at least 120 rescues from homes and stranded vehicles over the past two days. More than 250 people were staying at a Red Cross shelter at the town’s 500-seat concert venue, along with more than 110 pets.
Several other towns along the Mississippi asked for help filling sandbags as river levels continued to rise to potentially record heights.
Volunteers in Dutchtown, about 100 miles south of St. Louis, erected a makeshift levee consisting of 7,000 tons of gravel fashioned into a 6-foot wall topped with plastic and sandbags.
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