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Davenport Flood Resilience Study Implementation

Davenport Flood Resilience Study Implementation
Posted on 04/04/2022
Davenport Flood Resilience Study Implementation

03/16/22
Davenport City Council approved submission of a $15.9M RAISE grant for several flood resilience projects. Find details about the grant and the projects at the tab below. 

03/15/22
Following the historic floods of 2019, the City contracted a flood study to help identify structural and non-structural enhancements to the City's flood response and defense systems. The study was approved by Council in November 2021 after nearly two years of data collection, analysis, stakeholder, and public input.

Planning for implementation began immediately and is now underway. Most initial activities will be focused on underground infrastructure, minor road raises, and repairs to existing structural flood defense systems in poor repair. Targeting these initial improvements comes with considerable benefits, including more efficient response and reduced resource needs during times of flood.

Use this page to follow along as the City strengthens its response to riverfront flooding.  Be aware full implementation of the recommendations identified in the study will require significant funding and take time to implement. 

Black Hawk and Walnut Creek Berm Repairs | In Process

Map image of area to be cleared along Walnut and Black Hawk Creeks03/15/22

Maintenance of the berms along Black Hawk and Walnut Creeks is long overdue. The City is currently working to remove overgrown weeds, brush and scrub trees, and relocate burrowing animals, all of which threaten the structure's integrity. This work is expected to be complete in early April.

After clearing is complete, the berms will be inspected and condition assessment performed to prioritize any needed repairs.

Union Station | In Process

03/15/22

In 2019, the failure of temporary flood barriers led to the flooding of the City's historic Union Station. Cleanup was performed and electrical raised shortly after. The City has been working through the FEMA Public Assistance process to fund the installation of a structural berm on the south side of the building to improve the flood resilience of the facility. The City believes the project will be approved and constructed in 2022.

Riverfront Storm Sewer Updates & Road Raises | Incremental Step Reduces Flood Response | Grant Request

03/16/22
Davenport City Council approved submission of the $15.9M RAISE grant. 

03/15/22

Davenport City Council will consider authorizing staff to pursue a $15.9M US Department of Transportation RAISE Grant for infrastructure improvements that support flood resilience on Wednesday, March 16. The total project application is estimated at $19.9M; 80% of the eligible cost would be paid under the grant if awarded. The City's cost-share is estimated at $3.9M.

  • Projects proposed under the grant support the following goals:
    Maintaining access to River Drive until the Mississippi River reaches stage 17.5 FT with little to no staff intervention/response
  • Establishes a permanent flood detour route to river stage 22 FT once River Drive has been closed due to floodwaters
  • Ensures interstate access to the Centennial and Government Bridges during flood events greater than 22 FT river stage

Projects that would be completed under the grant include:

  •  Storm Sewer Improvements at River Drive and Marquette Street
  • Road Raises on Rockingham Road from Sturdevant to Marquette Street
  • Road Raise on River Drive near Mound Street
  • Road Raise at the intersection of 2nd Street and Gaines Street
  • Road Raise at the intersection of 3rd Street and LeClaire Street
  • Repair of various sections of roadway on Rockingham Road and Marquette Street
  • Reconfiguration of the 3rd & 4th Street intersections on River Drive
  • Installation of new traffic signals at the following intersections, 2nd and Marquette, 3rd and River Drive, 4th and River Drive  

RAISE Grant
Rebuilding American Infrastructure with Sustainability and Equity (RAISE) grants are federally awarded funding for surface transportation infrastructure projects. They are awarded on a competitive basis for projects that will have a significant local or regional impact. The eligibility requirements of RAISE allow project sponsors at the State and local levels to obtain funding for multi-modal, multi-jurisdictional projects that are more difficult to support through traditional DOT programs.

Projects submitted for RAISE grant funding are evaluated based on: how innovative they are; how well they will enhance safety and quality of life for people; and how well they support economic competitiveness and environmental sustainability of localities and regions. Within these criteria, the USDOT will prioritize funding projects that can demonstrate improvements to racial equity, reduce impacts of climate change and create good-paying jobs.

Grant Documents and Details
Will be added as documents become available

Application and Project Narrative
Applicable Appendices 

A. Documentation of Funding Commitments

B. Letters of Support and Partner Agency Documentation

C. Concept Plans

D. Cost Estimate Backup

E. Benefit Cost Analysis Technical Memo