This introductory text begins from the premise that the complexities of modern hydrology can be mastered by understanding basic physical principles of fluid movement. Focusing first on analysis at the scale of a single watershed, the authors then introduce the mechanics of fluids in closed conduits and open channels. They re-evaluate catchment processes in light of fluid mechanics, open channel hydraulics, and groundwater flow. The concluding chapter stresses the importance of understanding water movement in the environment by exploring the relationship of hydrology to such disciplines as atmospheric science, ecology and geology. The CD-ROM provides a Web version of the text (Netscape Navigator 2.0 or later required) and includes video demonstrations, additional content, interactive review questions, and extensive links to facilitate study and review.