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Des Moines & Raccoon Rivers, Iowa Date Last Updated: 05/10/2013 15:27 Official Project NameDes Moines & Raccoon Rivers, Iowa 
Location
Downtown Des Moines, IA -- Central Place & Birdland Park levees; Downtown Closures State(s) IA Congressional District(s) IA-3 Status Construction of the Birdland Park and Central Place levee improvements has been completed. The As Built Drawings and the O&M Manual are being prepared. These two levees constitue approximately 90% of the authorized project. Completion of the authorized project requires the design and construction of seven closure structures that protect downtown Des Moines Iowa. Completing the design and construction will cause the Section 902 Limit of WRDA 1986 to be exceeded. The Section 902 Limit is now set at $21,046,000; while the estimated total project cost is $22,819,000. A Post Authorization Change Report is being prepared requesting Congress to increase the Section 902 Limit. This report is to be submitted to Congress in August 2013. The 2010 Des Moines River Regulated Flow Frequency Study identified a high risk of flooding in the Des Moines area, significantly higher than previously estimated. The resulting hydraulics show that the existing levees in downtown Des Moines do not provide reliable protection against a 100-year flood. A 905(b) Reconnaissance Study is needed to determine if there is a Federal interest in additional Flood Risk Management measures for the Des Moines Area, and if so a subsequent Feasibility Study would determine the best combination of those measures. The 905(b) Study would cost $100,000 at 100% Federal expense. The Feasibility Study would be cost-shared 50/50 with the City of Des Moines as the local sponsor. Description The DMRR Feasibility Report, approved in 2005, recommended the reconstruction of 2.6 miles of levee systems at Birdland Park & Central Place and the improvement of Downtown Closures in existing Des Moines levee systems. The project was authorized for construction in WRDA 2007 and E&WDAA 2010. Summarized Financial Data
Major Work Item (This Fiscal Year) FY :2013: The As Built Drawings, the Operations and Maintenace Manual and the Post Authorization Change report will be completed in FY 2013. Major Work Item (Next Fiscal Year) FY 2014: Begin the design of the seven downtown closure structures and complete the 905(b) Reconnaissance Report. Authority CG - Construction General -- Authorized for construction in WRDA 2007, Section 1001; and in E&WDAA 2010, Section 113 Project Manager Information
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