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APWA Iowa Honors Cedar Rapids Flood Mitigation Project

Muscatine, Iowa – The Sinclair Levee, part of the Eastside Cedar Rapids Flood Mitigation System, won the 2019 American Public Works Association Iowa Chapter’s environmental project of the year award for projects greater than $2.5 million. It was awarded at the Organization's fall conference in Des Moines.

Completed in July 2018, the New Bohemia/Sinclair District project also won the Envision Bronze Award for sustainable infrastructure from the Institute for Sustainable Infrastructure. It was the third Iowa project to gain the distinction. Stanley Consultants, a worldwide provider of engineering, environmental and construction services, was heavily involved with both projects.

In 2008, the City of Cedar Rapids was the victim of a devastating 500‐year flood. The disaster caused $2.4 billion in damages, with 5,900 residential properties flooded and over 1,300 structures demolished. Cedar Rapids and the U.S. Army Corps of Engineers launched a 20‐year, $750 million plan to stiffen its defenses to withstand a 500‐year flood. The recently completed Sinclair Levee, pump station, gate well and detention basin are the first elements of a citywide master plan.

Stanley Consultants worked in conjunction with the city and partners to develop the master plan. In 2015, the entire plan was submitted to the city. The process provided a more detailed analysis of the 2008 corridor study, helped identify and define specific barrier measures and provided a means to integrate the community’s history, culture and resident feedback. Stanley Consultants was also tasked to lead the design team for the heavily industrialized east bank of the river.

The new levee traces the east bank of the river for a half mile from the African American Museum to the Alliant substation just south of downtown. Built at the lowest point along the river on a former industrial site, it protects the nearby New Bohemia District from floodwaters. The levee is 13- to 23 feet tall in different places, up to 130 feet wide at the base and has a 12‐foot‐wide bike and pedestrian trail on top. At 16th Avenue SE, the levee gives way to two walls where a gate can seal off this section.

Designed to standards higher than those required by the U.S. Army Corps of Engineers, it provides protection against a 500‐year flood plus an additional three feet of freeboard, which passes the 2008 flood.

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About Stanley Consultants

Stanley Consultants provides program management, planning, engineering, environmental and construction services worldwide. Recognized for its commitment to client service and a passion to make a difference, StanleyConsultants brings global knowledge, experience and capabilities to serve federal, municipal and industrial clients in the energy and infrastructure sectors. Since 1913, Stanley Consultants has successfully completed more than 25,000 engagements in all 50 states, U.S. territories, and in 110 countries. For more information on Stanley Consultants, please visit http://www.stanleyconsultants.com.

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