Iowa Watersheds Project
The Iowa Flood Center and IIHR—Hydroscience and Engineering were awarded funds from the U.S. Department of Housing and Urban Development (HUD) to prepare watershed mitigation projects directed toward flood damage reduction in select Iowa watersheds. The specific goals of the project are to:
- Maximize soil water holding capacity from precipitation;
- Minimize severe soil erosion and sand deposition during floods;
- Manage water runoff in uplands under saturated soil moisture conditions;
- Reduce and mitigate structural and nonstructural flood damage
The projects will seek to restore and enhance Iowa’s drainage infrastructure to create more reliable flood protection.
Middle Raccoon River
Soap Creek & Chequest Creek
Upper Cedar River
Phase I - Hydrologic Assessment
The hydrologic assessment will include data collection, hydrologic model development and an assessment of the areas in the watershed where construction of projects would most likely reduce flood damages downstream. The hydrologic assessment will be completed for the four selected Iowa watersheds.
Phase II - Construction of Projects
Data from the hydrologic assessment and input from the Watershed Management Authority will be utilized to select targeted areas (HUC 12 scale) to construct and implement demonstration projects. Three HUC 12s will be selected to receive funds for project construction.
The following subwatersheds have been selected to receive $1.5M to fund the construction of small-scale flood mitigation projects:
- Otter Creek in Fayette County, Turkey River watershed
- Beaver Creek in Floyd & Chickasaw County, Upper Cedar River watershed
- South Chequest Creek and Soap Creek in Davis County
Potential projects include active & passive water storage structures, buffer strips, advanced tile drainage systems, flood easement acquisition, and wetlands.
|June 2012||Phase I begins - Project planning with communities in four watersheds, commence watershed data collection and modeling|
|February 2013||Select three HUC 8s to participate in Phase II|
|Spring 2013||Select HUC 12s for project implementation
|Summer / Fall 2013||Explore project locations|
|Winter 2014||Finalize and present hydrologic assessment of each watershed|
|Summer 2014-2015||Construct projects|
|Summer 2014-2017||Monitor and assess projects|
|Summer 2017||Finalized Phase II report|