US and Canadian another name for fish ladder
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for fishway
Historical Examples of fishway
It is provided with a fishway, and some fish are known to surmount the dam by this means.