Review of the U.s. Army Corps of Engineers Restructured Upper Mississippi River-illinois Waterway Feasibility Study: Second Report - Couverture souple

National Research Council; Transportation Research Board; Division On Earth And Life Studies; Water Science And Technology Board; Committee To Review The Corps Of Engineers Restructured Upper Mississippi River-Illinois Waterway Feasibility Study

Couverture souple

ISBN 10 : 0309094364 ISBN 13 : 9780309094368

Editeur : National Academies Press, 2004

Synopsis

For the past few years, the Corps has been working on what is known as the Restructured Upper Mississippi River-Illinois Waterway Feasibility Study, the heart of which is a multibillion-dollar proposal to double the length of up to a dozen locks on the river. The Research Council first reviewed the feasibility study in 2001 during controversies over the accuracy of models being used by the Corps to justify lock expansion based on increased demand for barge transportation. More than 100 million tons of cargo--half of it grain destined for international markets, the other half goods such as construction materials, coal, and chemicals--are shipped along the navigation system each year. The locks, which along with dams allow barges to traverse uneven river depths, were originally designed for "tows" of barges up to 600 feet long, but the length of a typical tow has increased, forcing the Corps to look for ways to relieve congestion.

The book finds the U.S. Army Corps of Engineers has made good progress in broadening its proposed plan for navigation improvements on the Upper Mississippi River-Illinois Waterway system to give greater consideration to ecological restoration. However, the plan still does not provide sufficient economic justification for expanding locks on the rivers because of flaws in the models the Corps used to predict demand for barge transportation. Little attention is paid to inexpensive, nonstructural navigation improvements that could help better manage existing levels of barge traffic. The revised plan has been usefully expanded to include many creative and potentially useful ecosystem restoration measures. These measures, however, should be more firmly grounded in river science principles and more broadly consider ways the river's ecology might affect or be affected by navigation, recreation and other uses.

A propos du livre

À propos de l'auteur

Committee to Review the Corps of Engineers Restructured Upper Mississippi River-Illinois Waterway Feasibility Study, National Research Council

Détails de l'édition

• Éditeur: National Academies Press
• Date d'édition: 2004
• Langue: anglais
• ISBN 10: 0309094364
• ISBN 13: 9780309094368
• Reliure: Broché
• Nombre de pages: 100
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible