Petroleum and chemicals, coal, and farm and food products make up the vast majority of U.S. inland waterways trade tonnage. In March 2002, these commodities constituted nearly 85 percent of total inland waterway trade.
|Inland Waterways Commercial Tonnage||Mar-01||Mar-02|
|Petroleum and chemicals (million short tons)||18.10||19.30|
|Petroleum and chemicals percent change from same month previous year||-18.10||6.63|
|Coal (million short tons)||13.50||11.90|
|Coal and coal products percent change from same month previous year||3.05||-11.85|
|Farm and food products (million short tons)||6.60||7.76|
|Farm and food products percent change from same month previous year||-12.35||17.58|
NOTE: The current value is compared to the value from the same period in the previous year to account for seasonality.
SOURCE: U.S. Army Corps of Engineers, Waterborne Commerce Statistics Center, Monthly Indicators, available at: http://www.iwr.usace.army.mil/ndc/wcsc.htm.