Great Lakes Navigation System Overview and Commodity Trends

This technical report provides an in-depth overview of the Great Lakes Navigation System (GLNS), which is one of the longest deep draft navigation systems globally, encompassing the five Great Lakes and the St. Lawrence River. The report outlines the significance of the GLNS to the economic and social development of the United States and Canada, highlighting its role in transporting nearly 118 million tons of commodities in 2021. It details the critical infrastructure, including the Soo Locks, which facilitate vessel traffic and support key industries such as iron ore and steel manufacturing. The document also presents data on the top commodities transported, including iron ore, limestone, and coal, and discusses emerging markets like container shipping and increased cruise traffic. Additionally, the report analyzes trends in commodity movements and the economic impact of the GLNS, including job support and economic activity generated by the navigation system.