This report describes current waterborne commodity flows through Texas ports and waterways. Texas ports and waterways have three interrelated components: the Gulf Intracoastal Waterway (GIWW); ten deep draft ports (30-45 feet deep); and many shallow draft ports, used primarily by barges and for fishing and recreation. Almost all commodity movements through Texas ports and waterways can be accounted for by examining traffic o the GIWW and through the deep draft ports. Thus, the analysis focused on these two components of the Texas waterborne transportation system.