The U.S. Army Corps of Engineers (the Corps) has played a large and important role in shaping water resources systems in the United States since Congress first tasked it in 1824 to improve navigation on the Ohio and Mississippi Rivers. Since then, rivers have been modified for navigation and flood control, harbors have been dredged for shipping, and coastlines are routinely fortified against erosion and beach loss. Recent decades have seen an overall decline in budgets for civil works project construction, yet the range of objectives for water resources projects has broadened as society places more value on environmental and recreational benefits. Thus, the Corps' portfolio of water resources projects has changed considerably. There is a reduced emphasis on traditional construction projects and an increased focus on maintenance and reoperation of existing projects such as locks, dams, and levees and on environmental restoration projects. An integrated approach to water resources planning at the scale of river basins and coastal systems is widely endorsed by the academic and engineering communities. The Corps' mission, expertise, and experience give it immense potential to alter the structure and functioning of the nation's waterways and coasts. As might be expected in a large and complex organization answering to a range of public and private demands, implementation of these new policies and objectives is neither consistent nor complete. River Basins and Coastal Systems Planning within the U.S. Army Corps of Engineers recommends improvements in the Corps' water resource project planning and review process. This report compares economic and environmental benefits and costs over a range of time and space scales, suggests multiple purpose formulation and evaluation methods, and recommends integration of water development plans with other projects in the region.

The U.S. Army Corps of Engineers (Corps) is responsible for construction, operations, and maintenance of much of the nation's water resources infrastructure. This infrastructure includes flood control levees, multi-purpose dams, locks, navigation channels, port and harbor facilities, and beach protection infrastructure. The Corps of Engineers also regulates the dredging and filling of wetlands subject to federal jurisdictions. Along with its programs for flood damage reduction and support of commercial navigation, ecosystem restoration was added as a primary Corps mission area in 1996. The National Research Council (NRC) Committee on U.S. Army Corps of Engineers on Water Resources Science, Engineering, and Planning was convened by the NRC at the request of the Corps of Engineers to provide independent advice to the Corps on an array of strategic and planning issues. National Water Resources Challenges Facing the U.S. Army Corps of Engineers surveys the key water resources challenges facing the Corps, the limits of what might be expected today from the Corps, and future prospects for the agency. This report presents several findings, but no recommendations, to the Corps of Engineers based on initial investigations and discussions with Corps leadership. National Water Resources Challenges Facing the U.S. Army Corps of Engineers can serve as a foundational resource for the Corps of Engineers, U.S. Congress, federal agencies, and Corps project co-sponsors, among others.

Emergence of a toxic organism like pfisteria in tributaries of the Chesapeake Bay has focused public attention on potential hazards in our water. More importantly, it has reminded us of the importance of the entire watershed to the health of any body of water and how political boundaries complicate watershed management. New Strategies for America's Watersheds provides a timely and comprehensive look at the rise of "watershed thinking" among scientists and policymakers and recommends ways to steer the nation toward improved watershed management. The volume defines important terms, identifies fundamental issues, and explores reasons why now is the time to bring watersheds to the forefront of ecosystem management. In a discussion of scale and scope, the committee examines how to expand the watershed from a topographic unit to a framework for integrating natural, social, and economic perspectives as they share the same geographic space. The volume discusses: Regional variations in climate, topography, demographics, institutions, land use, culture, and law. Roles and interaction of federal, state, and local agencies. Availability or lack of pertinent data. Options for financing. The committee identifies critical points in watershed planning to ensure appropriate stakeholder involvement and integration of science, policy, and environmental ethics.

In a world characterized by increasing complexity and volatility, managers must be able to flexibly adapt their strategies to changing environmental conditions. Traditional strategic management frameworks often fail in this context. Therefore, we present "scenario-based strategic planning" as a framework for strategic management in an uncertain world. Previous approaches to scenario planning were complex and focused on the long term, but the approach developed by Roland Berger and the Center for Strategy and Scenario Planning at HHL Leipzig Graduate School of Management is different. By designing appropriate tools and integrating scenario planning into strategic planning, we have made our approach less complex and easier for firms to apply. We illustrate the approach with examples from different industries.