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Public Domain Picture: 20110517-NRCS-LSC-0238

Courtesy: US Department of Agriculture
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The Army Corps of Engineers conduct daily depth measurements along the intake side of The Old River Control Complex, Low Sill Structure in Concordia Parish, LA, on Tuesday, May 17, 2011. The measurements tell both the condition along the intake “ramp” and allow them to calculate the flow through the gates. The Old River Control Complex is designed to channel as much as 30 percent of the Mississippi River’s flow into the Gulf of Mexico through it’s eleven 44-foot wide gates across 566 foot span that separates the Mississippi and (the outflow channel to the) Red and Atchafalaya Rivers. Rated at 300,000 million gallons per minute (note: That’s more than seven Olympic sized swimming pools every second). Although this helps the Mississippi River, it (along with other concerns, puts back pressure on the Red River and other waterways, possibly causing some flooding of farms to avoid a catastrophic breech of the levee system. Most of the gates have been opened by a rolling crane and stored in racks. Debris, some as larger than telephone polls make their way through the gates and pool in eddies. The constant motion and contact with other objects, strip trees of their branches and bark. 20-30 pound Carp can frequently be seen jumping out of the white water. USDA Photo by Lance Cheung.
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Produced by United States Government
The file available on this page is a work of the United States government. A work of the United States government, as defined by United States copyright law, is "a work prepared by an officer or employee of the U.S. government as part of that person's official duties." In general, under section 105 of the Copyright Act, such works are not entitled to domestic copyright protection under U.S. law.
US Department of Agriculture

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US Department of Agriculture (Flickr Photostream)
External Site: US Department of Agriculture
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