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Title: Final Programmatic Environmental Assessment and Finding of No Significant Impact : Council Bluffs Levee Program, Pottawattamie County, Iowa
Authors: United States. Army. Corps of Engineers. Omaha District.
Council Bluffs (Iowa). Public Works Department.
Keywords: Council Bluffs (Iowa)
Flood control
Environmental protection
Environmental management
Publisher: United States. Army. Corps of Engineers. Omaha District.
Abstract: The City of Council Bluffs (City) Levee Systems provide flood risk reduction to the City, extending approximately 28.5 miles in length adjacent to the Missouri River and the tributaries of Indian Creek and Mosquito Creek (Figure 1.1). The levee systems were constructed by the US Army Corps of Engineers (USACE) in segments from 1946 to 1954 to provide direct flood risk reduction in approximately 64 percent of the incorporated limits of the City and indirect benefits to a much larger regional area. The areas benefiting from the flood risk reduction include both public and private properties. Over the course of their life, the levee systems have provided flood risk reduction from several major flood events, most recently in 2011 when Missouri River water levels exceeded the 100-year flood elevation for the duration of approximately 90 days. Since construction, the City of Council Bluffs levee systems have been maintained by the City (local Sponsor) and certain system features are nearing the end of their design life. Additionally, levee design criteria have changed since the original design, which has exacerbated some deficiencies relative to current design criteria. As a result, deficiencies in portions of the levee systems have been identified. Levee rehabilitation and response (repair) projects completed by the USACE under authority of Public Law (PL) 84-99 of the Flood Control Act of 1944 require compliance with the National Environmental Policy Act (NEPA). These types of levee repairs or alteration projects generally do not require the preparation of an Environmental Impact Statement (EIS) because the projects typically result in long-term social and economic benefits and the adverse environmental effects are typically minor/short-term construction related. In general, the minor impacts associated with these projects greatly outweigh the overall longterm social and economic benefits of these projects. The Recommended Plan for the Council Bluffs Levee Program is consistent with this assessment of typical levee rehabilitation and response projects which is why an Environmental Assessment (EA) document is considered the appropriate NEPA document. This Programmatic Environmental Assessment (PEA) has been prepared for compliance with a program of alterations to the Missouri River Left Bank Levee Systems located within the City of Council Bluffs (Council Bluffs Levee Program). Levee alterations are identified by the type of deficiency (Geotechnical [Geotech], Drainage, Encroachment, Freeboard, and Structural) and the initials of the adjacent waterbody (with MR indicating Missouri River; IC indicating Indian Creek, and MC indicating Mosquito Creek).
Description: Programmatic 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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