Safety Zone; Big Sioux River From the Military Road Bridge North Sioux City to the Confluence of the Missouri River, SD

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The Coast Guard is extending the effective period for the temporary safety zone restricting navigation on the Big Sioux River from the Military Road Bridge in North Sioux City, South Dakota to the confluence of the Missouri River and extending the entire width of the river. Temporary section 33 CFR 165.T11-0511, which established the temporary safety zone, was set to expire August 30, 2011. Extending the effective period for this safety zone provides continued and uninterrupted protection of levees and personnel involved in ongoing high water response. Continuing the safety zone will significantly reduce the threat of destruction to levees. Additionally, to avoid duplicative temporary section numbers, section 33 CFR 165.T11-0511 is redesignated as 33 CFR 165.T11-0528.