Many of the world's rivers flow north. Among major U.S. rivers, the St. Johns (Florida) and the Willamette (Oregon) both flow north. Wisconsin's Fox River flows in a northeasterly direction.
Source:
Dictionary of Misinformation, p. 216 (1975) (R 031.02 Bur)
Notes:
See also Rivers That Flow North, one librarian's homage to this frequently asked question.