【注】阿塔巴斯卡瀑布有加拿大"小壶口瀑布"之美誉,水流湍急,水声震天。更有英文解说道:“Water fights the rock lip back a few millimeters a year. … But the nature of the rock may one day force the water to abandon this channel and seek another route”(河水终年与礁石搏斗,逼礁沿每年后移数毫米。… 但礁石的本性或迫使河水某天放弃这条流道而另辟蹊径)。