From the Preface: "This manual was written specifically for the local, state, or tribal governments that have the primary responsibility for operating an d maintaining flood control works. The intent of the document is to provide you, the public sponsor of a flood control system, with some clear and comprehensive guidance on the operation and maintenance of levees, floodwalls, and other flood control structures. It describes how to plan and prepare for high water, and lays out steps to take during emergencies that will help reduce the threat of flooding. It also touches upon other related components of a complete flood protection program, such as how you might promote public awareness of local flood issues. In addition to providing recommendations on how to make your flood control programs more effective, this manual also explains the types of assistance that the U.S. Army Corps of Engineers can provide to a community before, during, and after a flood. We hope the information presented will make the emergency programs we administer more clear and accessible."
U.S. Army Corps of Engineers: http://www.mvr.usace.army.mil/