About 1,500 Americans floating down a river that separates the United States from Canada had to be rescued from the water when strong rains and winds sent them illegally into Canadian territory, the country's coast guard said on Monday.

The Americans were taking part in the annual Port Huron Float Down on Sunday in the St. Clair River, which runs between the U.S. state of Michigan and the Canadian province of Ontario.

The winds blew the flotilla of inflatable rafts and inner tubes off course and toward the Canadian shore. Some rafts deflated, spurring a rescue effort by the Canadian Coast Guard as well as federal and provincial police, coast guard spokeswoman Carol Launderville said in an email....

"They were terrified of entering another country without documentation. No one carries their passport or any ID, and a lot were drinking alcohol," Peter Garapick, superintendent of search and rescue for the coast guard, told CBC television.