Following the significant flooding of 2008, the U.S. Army Corps of Engineers (USACE) updated the Des Moines River Regulated Flow Frequency Study to better identify and communicate the probability of flood events along the Des Moines River. The study results indicated that the flood flow frequencies increased over previous estimates. It is anticipated that application of these updated flows to the Des Moines River hydraulic model will result in increased Base Flood Elevations (BFE's) in future Federal Emergency Management Administration (FEMA) Flood Insurance Studies. Projects have been identified to mitigate the effects of increased flood flows on regulatory BFE's and ensure future FEMA accreditation of existing levee systems. State flood mitigation grants will help fund the majority of these improvements. Improvements include levee and flood wall improvements, bridge/structure modifications, and interior drainage improvements including pump stations and storm sewers. The timing of the improvements in the plan years are subject to change pending on the amount and timing of any grants. This project is included in the city's fy 2023-2027 Capital Improvement Program. As of June 14, 2023, further details regarding design and construction timelines have not been identified.
*Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available. As of September 4, 2023, no new information available
.webp)
