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Liew, P. K. L. (1982). Impact of the eel ladder on the upstream migrating eel Anguilla rostrata population in the St. Lawrence River at Cornwall: 1974-1978. Pages 17-21 in K. H. Loftus, ed. The 1980 North American Eel Conference, Toronto, Ontario (Canada), Ontario Fisheries Technical Report Series.
An eel ladder was constructed in 1974 at the Moses-Saunders Dam, situated in the St. Lawrence river at Cornwall, Ontario, to facilitate the upstream migration of the American eel Anguilla rostrata. Several million eels passed through this fishway between 1974 and 1979. Age, length and growth characteristics of the eels using the ladder were examined annually between 1974 and 1978. Trends in the reduction of mean weight and mean length at corresponding ages suggest that the eel ladder has reduced the effect of the dam as an obstacle to eel migration. The results suggest that during the first year of operation the majority of the eels moved were those whose migration had been blocked by the dam for several years. In subsequent years, the ladder appears to have moved eels into the upper St. Lawrence River almost as fast as they reached the dam.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/data_library/fisheries/fish_passage/liew.html
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