The Columbia/Snake System Each year, 4 million tons of commodities are shipped past Ice Harbor Dam on the Snake River, many traveling from the port at Lewiston, Idaho to export facilities at Portland, Vancouver, Longview, Kalama, and other lower Columbia River ports. Our navigation channel is a 14 foot deep channel, with a typical tow configuration of one tug and 4 or 4.5 barges, with a total tow capacity of about 13,000 tons of grain. We also do nuclear sub cores.

Lower Snake Traffic Congress approved the Lower Snake River Dam project in 1945. Construction of the Lower Granite Dam began in 1956. By 1975, four dams had been built on the Snake River between Lewiston, Idaho and the Tri-Cities area in eastern Washington.

Columbia River Traffic Total of 9 million tons on average, including 5 million wheat, 2 million fuel and oil, and 1 million+ in forestry products.

Salmon Snake River spring/summer chinook salmon (Oncorhynchus tshawytscha), listed as Threatened in 1991; Snake River fall chinook salmon (O. tshawytscha), listed as Threatened in 1991; Snake River sockeye salmon (O. nerka), listed as Endangered in 1992; Snake River Basin steelhead (O. mykiss), listed as Threatened in 1998; Upper Columbia River spring run chinook salmon (O. tshawytscha), listed as Endangered in 1999; Middle Columbia River steelhead (O. mykiss), listed as Threatened in 1999; and Upper Columbia River steelhead, listed as Endangered in 1997. In addition, the resident Columbia Basin bull trout (Salvelinus confluentus) is listed as Threatened under the ESA.

Technical Challenges Navigation or not. What does navigation cost? Deep Draft Multiport analysis.