Transforming the Tide

This article looks at the past, present, and future history of the Columbia/Snake River (CSR) system. Today, eight hydroelectric dams and navigation locks provide tug and barge companies a 465-mile navigable waterway between Portland, Oregon and Lewiston, Idaho. These dams and locks allow the CSR system to transport more than 46 million tons of cargo per year, including grain, refined petroleum products, fertilizer, containers, wood products, and special project cargoes. The existing barge transportation system has more than enough capacity at a competitive cost to meet peak demand. The only constraint on the system today is the need for dredging at some terminal entrances and parts of the navigation channel.


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  • Accession Number: 01608456
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 18 2016 11:01AM