National Geographic : 1959 Mar
Long Sault Rapids Shatter the River; Beyond, a Ship Rides Cornwall Canal's Tranquil Waters Scourge of the St. Lawrence, rapids have discouraged traffic from colonial times. One 19th-century visitor remarked that he "would rather cross the Atlantic thrice than travel... the rapids .... " Submerged rocks and waves as high as 15 feet barred all but shallow-draft excursion boats that shot the cascade for thrills. Engineers began a nine-foot bypass in 1834; others deepened it to 14 feet at the turn of the century. Today rapids and canal lie drowned beneath the 28-mile-long lake formed by Moses-Saunders Powerdam, itself by passed by Wiley-Dondero Ship Channel. This photo graph was taken from Long Sault Island, New York. Dried-up rapids bare their fangs-jagged slabs ca pable of ripping the stoutest hull. To build dams below the rapids, engineers temporarily diverted the river (page 320). Long Sault's rocks, after lying exposed for nine months, are now submerged deeper than ever. KODACHROMESBY AL MELLETT,POWERAUTHORITYOF THE STATEOF NEW YORK© N.G.S.