Updated to retain the emphasis on large projects which appeared in the first edition, this book includes new material on environmental issues, groundwater flow, hydraulic design of culverts, and data to conform to the standards of the Hydraulic Institute. Computer programs for unsteady flow are now provided. Also new to this edition: material on the design and analysis of flow in culverts; new problems in each chapter; added material on the effects produced by bridge piers and the use and construction of SCS unit hydrograph; more on the analysis of groundwater pollution problems; new section on transport processes in fluid flow; and a list of Internet addresses where information on water resources and water resource programs can be obtained. Computer programs for the numerical solution of unsteady flow in closed and open channels are provided (available on disk from the author).