Freight Capacity and Utilization of the Erie and Great Lakes Canals before 1850

This paper deals with the relationship between tonnage capacity and utilization of the Erie, Welland and St. Lawrence River canals before 1850. Estimates are presented for the capacities of the canals, as built and modified. Comparison with the actual tonnage carried eastward for selected years shows that the British canals were grossly and increasingly underutilized, while the Erie's utilization was closely correlated with its capability, particularly through its eastern half. Reasons for this situation are given and it is argued that had British funds been redirected away from canal enlargement and applied to the construction of vessels and harbor facilities, the British might have entered upon a prosperous carrying trade within North America in the second quarter of the nineteenth century.