If Wolf Creek Dam in Kentucky fails, $6 billion in flood damage is projected to occur downstream. A dam foundation remediation project at Wolf Creek Dam to fix seepage and Karst solutioning problems is a […]
Came accross and interesting profile of this gentleman from FEMA who is their top Dam Safety expert. James Demby is the senior technical and policy adviser and program manager for the FEMA National Dam Safety […]
Coastal erosion is threatening existing structures at Shell Beach and northern Pismo Beach near San Luis Obispo, California. The Army Corps of Engineers suggests 6 sea walls to protect infrastructure such as two sewage treatment […]
The Corps is proposing to use the fly ash as part of a lime slurry mixture for some kind of grouting to stabilize the levees according to the article. Environmentalists are concerned about the potential […]
In four separate contracts, up to $331 million in levee reconstruction projects were awarded last week by the USACE to rebuild levees in some of the hardest hit areas from Hurricane Katrina, including St. Bernard […]
Kansas City, Mo. (Aug. 5, 2009) – The U.S. Army Corps of Engineers (USACE) has selected Black & Veatch as the design engineer for the McCook Reservoir Main Tunnel. The new tunnel will connect the future McCook Reservoir to Chicago’s Deep Tunnel system, which is aimed at improving water quality in area rivers and Lake Michigan and reducing flood risk for the city of Chicago and suburban communities. [Editor] Read on for the rest of the press release. Photo copyright Black and Veatch[/Editor] […]
In this ENR.com video, a US Army Corps of Engineers (USACE) project to protect Grand Isle Louisiana from the erosional effects of a large storm surge is described. 5.7 miles of sand filled geotextile tubes or geotubes 30-ft in diameter are used to form the core of a dune along with a geotextile erosion apron held in place by anchor tubes. The design is aimed to prevent devastating erosion in the event that a large storm surge overtops the protective dunes. The sand is screened on site and mixed with water to form a slurry that is pumped into the tube. Once the tubes are in place, additional sand will be placed over the top and the dune revegetated. If the topping sand is eroded away, the Corps hopes the fix will be easier to perform with the tubes. Click through for the video.
Norcross, GA, July 6, 2009 – The U.S. Army Corps of Engineers, New Orleans District (USACE – NO) has issued a contract to Dataforensics, a leader in geotechnical data management software development and implementation, for its PLog Enterprise software. The contract not only includes deployment of the PLog Enterprise system but expanding its capabilities to work with Oracle databases and with ArcSDE technology. [Editor] Click through for the rest of the press release. [/Editor]
Wet spots have been detected along a portion of a new levee being constructed by a US Army Corps of Engineers Contractor. The levee is approximately 95% complete, but the Levee Board wants to establish what is causing the apparent seepage before accepting the levee. More after the break. (Photo of Katrina levee failure from greenmannowar)
That is the title of a Seattle Post-Intelligencer article on post-Katrina levee issues in New Orleans (by way of ASCE Smart Brief). I think the article is somewhat sensationalized, but they do cite some interesting parallels between the levee reconstruction efforts made after Katrina and the levee construction/reconstruction that occurred after Hurricane Betsy in 1965.
The article also discusses a recent US Army audit with some disturbing although not unexpected findings:
An initial September 2010 target to complete the $14.8 billion in post-Katrina work has slipped to mid-2011. Then last September, an Army audit found 84 percent of work behind schedule because of engineering complexities, environmental provisos and real estate transactions. The report added that costs would likely soar.
A more recent analysis shows the start of 84 of 156 projects was delayed – 15 of them by six months or more. Meanwhile, a critical analysis of what it would take to build even stronger protection – 500-year-type levees – was supposed to be done last December but remains unfinished.