Low River Levels Force Transatlantic Low Water Surcharges
Low St. Lawrence River water levels trigger new vessel surcharges for European cargo moving to the Port of Montreal.
Low Water Surcharge
Canal Assessment
Operational fees applied by ocean carriers during periods of extreme drought allow lines to recover the costs associated with reduced vessel drafts. Applying a low water surcharge typically happens when inland waterways or major transit points like the Panama Canal experience a drop in water levels. These additional charges compensate for the fact that ships must carry less cargo to stay afloat in shallower channels.
Capacity Impact
Carriers must limit the number of containers on a vessel to prevent it from touching the bottom. When a low water surcharge is in effect, the effective capacity of the fleet drops because more ships are needed to move the same amount of freight. This reduction in efficiency leads to higher per-unit costs for shippers.
The fees are usually calculated per container and vary based on the severity of the water level drop.
Trigger Condition
Authorities monitor water depth at specific gauging stations to determine when to implement these measures. If the level falls below a certain threshold for several consecutive days, the surcharge is announced with a standard notice period. It remains in place until the rainy season or managed water releases restore the necessary depth for safe navigation.
Freight forwarders must factor these variable costs into their seasonal budget projections to avoid unexpected losses on high-volume routes.