Figure 1-4 U.S. Locks, Percent Vessels Delayed, 1993-2006
NOTE: The percentage of all vessels delayed before passing through a lock chamber.
SOURCE: U.S. Army Corps of Engineers, Waterborne Commerce Statistics Center, Navigation Data Center, available at http://www.iwr.usace.army.mil/ndc as of April 2007.
- Vessel delays have increased dramatically since 2003.
- Age of locks is considered to be a major factor in vessel delays.