• Pollution leading to decline in fishing activities.
• Expensive to maintain for example dredging to solve silting and use of ice
  breakers for 3 to 4 months.
• Urban problems like high crime rates, poor sanitation and overcrowding.
• Piracy and smuggling
• Congestion and delays due to many locks to adjust the level of water to
  improve navigation.
• Accidents
• The seaway enables ships to sail further inland and this has resulted into the
  decline of the volume of cargo going through New York Port along the New
  York State Berge Canal. This has led to loss of revenue for goods in transit.
• The width and depth of the seaway limits the size of vessels to be used on
  the route. Thus, large ocean-going ships cannot sail on it.

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