Budget Savings Analyses of Impacts of Landuse Change
Communities often rely on floodplain maps based on historic flood frequency information that may no longer be accurate. Hydrologic variation due to land use and climate changes may cause greater flood risk than identified in currently available floodplain mapping products. New mapping and modeling with revised hydrology and hydraulics for evaluating flood risk often take considerable time and resources to develop, which a community's budget may not support. Consequently, communities are making land use decisions based on the best available science that may be outdated and no longer representative of the existing flood risk.
Nonstructural and Natural Storage Approaches after Levee Damaged
Recurring significant flood events and resultant physical damages to levees throughout the Midwest region have increased interest in implementing nonstructural alternatives to levee repairs. Public Law 84-99 (P.L. 84-99) provides the U.S. Army Corps of Engineers (USACE) with the authority and responsibility to either repair flood-damaged levees enrolled in its levee Rehabilitation and Inspection Program or to implement nonstructural alternatives to those structural repairs.