Flood control projects


Book Description




Mapping the Zone


Book Description

Federal Emergency Management Agency (FEMA) Flood Insurance Rate Maps portray the height and extent to which flooding is expected to occur, and they form the basis for setting flood insurance premiums and regulating development in the floodplain. As such, they are an important tool for individuals, businesses, communities, and government agencies to understand and deal with flood hazard and flood risk. Improving map accuracy is therefore not an academic question-better maps help everyone. Making and maintaining an accurate flood map is neither simple nor inexpensive. Even after an investment of more than $1 billion to take flood maps into the digital world, only 21 percent of the population has maps that meet or exceed national flood hazard data quality thresholds. Even when floodplains are mapped with high accuracy, land development and natural changes to the landscape or hydrologic systems create the need for continuous map maintenance and updates. Mapping the Zone examines the factors that affect flood map accuracy, assesses the benefits and costs of more accurate flood maps, and recommends ways to improve flood mapping, communication, and management of flood-related data.




Flood Control Act of 1949


Book Description

H.R. 5472, (title II) authorizing the construction, repair, and preservation of certain public works on rivers and harbors for navigation, flood control, soil conservation, and for other purposes.







Rivers by Design


Book Description

The United States has one of the largest and costliest flood control systems in the world, even though only a small proportion of its land lies in floodplains. Rivers by Design traces the emergence of the mammoth U.S. flood management system, which is overseen by the federal government but implemented in conjunction with state governments and local contractors and levee districts. Karen M. O’Neill analyzes the social origins of the flood control program, showing how the system initially developed as a response to the demands of farmers and the business elite in outlying territories. The configuration of the current system continues to reflect decisions made in the nineteenth century and early twentieth. It favors economic development at the expense of environmental concerns. O’Neill focuses on the creation of flood control programs along the lower Mississippi River and the Sacramento River, the first two rivers to receive federal flood control aid. She describes how, in the early to mid-nineteenth century, planters, shippers, and merchants from both regions campaigned for federal assistance with flood control efforts. She explains how the federal government was slowly and reluctantly drawn into water management to the extent that, over time, nearly every river in the United States was reengineered. Her narrative culminates in the passage of the national Flood Control Act of 1936, which empowered the Army Corps of Engineers to build projects for all navigable rivers in conjunction with local authorities, effectively ending nationwide, comprehensive planning for the protection of water resources.