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Abstract
Riverine wetlands are critical habitats for migrating waterfowl, as they provide food, cover from harsh conditions, and provide stopovers during their fall migration. In 2008, a levee breach occurred at Illinois’s Henderson Creek State Fish and Wildlife Area (HCSFWA), unintentionally converting agricultural land into a wetland. The proposed work will leverage this levee failure and enhance waterfowl feeding areas, using control structures to manage water depths within the site and potentially reduce flooding downstream. The HEC-RAS model, a robust tool capable of simulating overland and riverine flows, was utilized to evaluate different scenarios to assess the proposed structure's performance on water depth and time of inundation. The scenarios considered include before the breach, current conditions, and proposed conditions with control structures. Results show that water level changes downstream were minimal and that HCSFWA should mainly cater to providing ideal feeding water depths for migrating waterfowl.