Short answers, pulled from the story.
The Continental Divide of the Americas is the principal hydrological divide of North and South America, separating watersheds that drain into the Pacific Ocean from those that drain into the Atlantic Ocean, Arctic Ocean, Gulf of Mexico, Caribbean Sea, and Hudson Bay. It extends from the Bering Strait in the north to the Strait of Magellan in the south, running largely along the high peaks of the Rocky Mountains and the Andes.
The highest point of the Continental Divide in North America is the summit of Grays Peak in Colorado, at 4,352 meters above sea level. The lowest natural point along the Divide in the Western Hemisphere is the Isthmus of Rivas in Nicaragua, at just 47 meters.
Triple Divide Peak in Glacier National Park, Montana, is the point where the primary Continental Divide and the Northern or Laurentian Divide converge, causing water to flow toward three separate oceans: the Pacific, the Atlantic via the Gulf of Mexico, and the Arctic via Hudson Bay. It is considered the hydrological apex of North America and is the world's only oceanic triple divide point.
Snow Dome is a glacier-covered peak on the border between Alberta and British Columbia, sitting at 3,456 meters, on the southern slope of which lies an alternative candidate for North America's triple-ocean drain point. If Hudson Bay is considered part of the Atlantic rather than the Arctic Ocean, Snow Dome replaces Triple Divide Peak as the triple-ocean watershed, with ice flowing to the Arctic via the Athabasca and Mackenzie rivers, to the Pacific via the Columbia River system, and to Hudson Bay via the Saskatchewan and Nelson rivers.
The Continental Divide National Scenic Trail (CDT) is a long-distance hiking route that follows the Continental Divide through the United States from the Mexico-U.S. border to the Canada-U.S. border. A less-developed Canadian extension, the Great Divide Trail, continues the route through five national parks and six provincial parks, ending at Kakwa Lake in east-central British Columbia.
Endorheic basins along the Continental Divide are enclosed drainage areas where water does not flow to any ocean. Examples include the Great Divide Basin in Wyoming, the Plains of San Agustin in New Mexico, the Guzmán Basin spanning New Mexico and Chihuahua, Mexico, and the Bolsón de Mapimí in Mexico. They are assigned to one side of the Divide using an overflow rule: the direction the basin would drain if progressively filled with water until it overflowed.