"With the precision of the professional scientist and the passion of the dedicated amateur, E.C. Pielou conducts a guided tour of fresh water on its course through the natural world. When rain sinks into the ground, how far and fast does it flow underground, and where does it return to the surface? How quickly does water evaporate from lakes and forests to create clouds? What happens when lakes and streams freeze? Does fresh water become naturally contaminated? Pielou's fascination with fresh water gives us a "natural history" that is as remarkable and surprising as the lives of plants and animals."