That’s the first thing new arrivals have to understand: water has weight, and different water has different weight. The water of the lake is very light, almost like the substance some people call air. You can breathe it and never notice, but you’re still breathing water, and you’re still Drowned. The water in the rivers is heavier, which means it falls to the bottom of the lake and runs there, heading for the great spouts that will drive it back up into the clouds, where it can fall again. Water loves falling.
