Imagine pouring out a glass of water. Where does the water go?
After soaking your computer or floor, it would eventually flow to join a greater body of water and become part of a larger drainage system. Where I grew up, outside of Milwaukee, my water would join with Lake Michigan. In the Twin Cities, where I went to university, it would flow into the Mississippi River. From Jackson, Wyoming, where I’m writing now, it would combine with the Snake River and flow into the Pacific Ocean. But Glacier National Park, where I worked in the summer of 2017, has a unique little point called Triple Divide Peak.