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Study Background

A U.S. Army Corps of Engineers Reconnaissance Report was completed for the Cedar Rapids-Time Check Area in May 2004.  This initial assessment recommended a detailed feasibility study to evaluate Flood Risk Management Alternatives and determine if there was a Corps of Engineers interest in implementing a flood risk management project for the northwestern Cedar Rapids, Iowa neighborhood of Time Check.

The purpose of a feasibility study is to determine if a federal project can be recommended as economically feasible and environmentally acceptable.  A feasibility study was authorized by Congress in 2006 and the Feasibility Cost-Share Agreement (FCSA) was signed on May 30, 2008.  The feasibility study was initiated in June 2008 as a partnership between the city of Cedar Rapids and the Corps.

Beginning in late May and extending through the first two weeks of June 2008 the Cedar River Watershed received significant amounts of rainfall.  This resulted in record flooding that exceeded the 500-year flood event (a flood event that has a 1 in 500 chance of occurring during any given year, or .2 percent chance). 

Due to the flood event, the City and the Corps decided to expand the feasibility study area to incorporate other points of concern along the Cedar River-Cedar Rapids corridor.  The FCSA was amended to expand the study to include both banks of the Cedar River within the Cedar Rapids city limits, increase the estimated study cost to $7.5 million and allow the city to make accelerated payments of its local share. 

The expanded study area now includes the downtown business district and the rest of the east side of the Cedar River corridor from Cedar Lake to the Waste Water Treatment Facilities; on the west side from the Edgewood Neighborhood in the north to the Alliant Energy-Prairie Creek Generating Station in the south.  This study area includes residential neighborhoods, commercial and industrial areas, and critical infrastructure including: potable water supply, wastewater treatment, power generation and public health and safety facilities.

Project Location Information

Location:  Cedar River, Cedar Rapids, Linn County, Iowa
River Basins:  Iowa and Cedar Rivers Basin
State:  Iowa
Congressional District:  Iowa 2nd, Congressman Dave Loebsack

Formal Feasibility Study Name

Cedar River, Cedar Rapids IA Flood Risk Management Feasibility Study

Authority to Conduct Feasibility Study

General Investigations -- House Resolution Docket 2749, adopted April 5, 2006; and Committee on Environment and Public Works, U.S. Senate, dated May 23, 2006.