Flood Center model predicts response to mitigation


The Iowa River - photo by Jim Malewitz

As Iowa City considers three multimillion dollar flood mitigation projects, the Iowa Flood Center is predicting their outcomes. The results would be a mixed bag for Iowans living along the Iowa River, the model predicted.

From the Iowa City Press-Citizen:

Iowa City’s public works director said Monday that initial forecasts from a flood-modeling program show proposed mitigation projects will result in lower water levels along Taft Speedway and other points upriver of the Park Road Bridge in the event of future flooding.

For a proposed levee on the east side of the river from Highway 6 to the Crandic Railroad bridge, flood levels just north of there would rise by three-quarters of an inch in a 100-year flood and 2¾ inches in a 500-year flood, Fosse said….

Meanwhile, downriver, the effects of the mitigation projects would raise water levels at points north of two new levees during future floods, the model shows.

And for a proposed levee on the west side of the river from McCollister Boulevard to the Crandic Railroad, Fosse said levels just north of there would rise by similar heights.

View the Flood Center’s many maps.