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Title: Supplemental Environmental Assessment & Finding of No Significant Impact : Nishnabotna Bend Operation and Maintenance Repairs, Nemaha County, Nebraska
Authors: United States. Army. Corps of Engineers. Omaha District
Keywords: Missouri River
Nemaha County (Neb.)
Stream restoration
Restoration ecology
Environmental management
Environmental protection
Publisher: United States. Army. Corps of Engineers. Omaha District.
Abstract: The purpose of the proposed project is to correct damages caused by the 2011 flood on the Missouri River which eroded the upstream portion of the island formed by the original construction of the chute, impacting the ability of the structure to control flow through the chute. Erosion of the island has allowed the river to bypass the originally constructed grade control structure near the upstream entrance of the chute In addition, five of the existing eight spur dikes within the chute that are intended to maintain the footprint of the project are in need of repair. All of the proposed repairs at Nishnabotna Bend are needed to restore the intended function of the chute by decreasing flow split between the main channel and the chute and causing the depths and velocities within the chute to decrease to more desirable levels for pallid sturgeon and other native fish and wildlife without adversely impacting any of the other authorized purposes of the Missouri River. Such O&M activities are within the purview of the overall MRRP and are considered necessary and proper expenses.
Description: Supplemental Environmental Assessment and Finding of No Significant Impact
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Environmental Documents

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