Short answers, pulled from the story.
The Continental Divide of the Americas stretches from the Bering Strait to Cabo San Diego at the southern end of Patagonia and Tierra del Fuego. This hydrological boundary follows high mountain peaks along the Rocky Mountains and Andes ranges throughout North and South America.
Grays Peak in Colorado stands as the highest point of the divide in North America at 14,278 feet elevation. The route passes through Arctic Alaska near the U.S., Canada border close to the Beaufort Sea before zig-zagging southward over Yukon.
Waters from Triple Divide Peak in Glacier National Park Montana flow into three oceans including the Pacific Ocean Atlantic Ocean via Gulf of Mexico and Arctic Ocean via Hudson Bay. Most geologists consider this point the hydrological apex of North America since Hudson Bay generally forms part of the Arctic Ocean.
The divide traverses western United States states including Montana Wyoming Colorado New Mexico and passes through Mexico Central American nations Guatemala Honduras Nicaragua Costa Rica Panama and South American countries Colombia Ecuador Peru Chile. It ends at Cabo San Diego southern end of Patagonia and Tierra del Fuego after following Andes peaks.
The lowest natural point occurs at Isthmus of Rivas in Nicaragua at 35 feet above sea level. In Panama the Canal cuts through it at 65 feet below sea level creating a man-made exception to the natural boundary.