Footnote
a The Continental Divide is a stretch of high ground running along North and South America. The river systems on each side flow in opposite directions—to the Pacific Ocean and to the Atlantic Ocean, the Gulf of Mexico, and the Arctic Ocean.
a The Continental Divide is a stretch of high ground running along North and South America. The river systems on each side flow in opposite directions—to the Pacific Ocean and to the Atlantic Ocean, the Gulf of Mexico, and the Arctic Ocean.