Author(s): W. E. Webb; W. F. Blair
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Abstract: Since the days of the early explorers, ice conditions have governed the length of the navigation season on the St. Lawrence River. Today we have year-round navigation on the St. Lawrence as far upstream as Montreal. Above this point, however, navigation is still closed during the winter months due to ice conditions. The present navigation season above Montreal is approximately April 1 to December 15 although some difficulty is still experienced in attaining these dates. The St. Lawrence River generally flows in a northeasterly direction from its source in Lake Ontario near Kingston to the Gulf. Ice problems occur first in the furthest downstream and most northerly canalized section, the South Shore Canal near Montreal. This paper briefly describes the major problems related to operating locks and canals under the conditions encountered during the opening and closing periods and the improvements which have been carried out to minimize the effects of cold weather.
Year: 1975