TABLE 8-8 Saint Lawrence Seaway U.S. Locks Downtime by Cause: 1992-2002

TABLE 8-8 Saint Lawrence Seaway U.S. Locks Downtime by Cause: 1992-2002

Hours of downtime

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  1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Weather related 187.0 125.7 101.0 88.5 143.4 65.2 43.2 2.0 53.7 56.8 41.1
Vessel incident 26.0 66.7 17.7 32.6 38.3 31.2 43.3 46.3 27.8 45.1 16.9
All other causes 16.0 132.7 45.0 16.7 5.9 35.6 12.1 1.3 2.6 8.9 5.1

NOTE: Weather-related causes include poor visibility and high wind/ice; All other causes includes lock equipment malfunction, civil interference, and water level/flow. These data pertain only to the two U.S. locks (Snell and Eisenhower) on the Saint Lawrence Seaway between the Port of Montreal and Lake Ontario. Canada operates another five locks along this portion of the Seaway, as well as other Seaway locks.

SOURCE: U.S. Department of Transportation, Saint Lawrence Seaway Development Corp. (SLSDC), Annual Reports (Washington, DC: Various years). Reports for years 1997-2001 available at http://www.greatlakes-seaway.com/en/aboutus/slsdc_annrept.html, as of March 2004. 2002-SLSDC, personal communication, March 2004.