Your recollection is not quite correct here. The border between California and Oregon is at the 42nd parallel, while Niagara falls is at the 43rd. The southernm

Your recollection is not quite correct here. The border between California and Oregon is at the 42nd parallel, while Niagara falls is at the 43rd. The southernmost part of Canada is Essex County, near Detroit, which does cross the 42nd parallel. The Niagara region is a big wine growing region primarily because of the moderating effect of the Great Lakes on the climate and the shelter provided by the Niagara escarpment.