This second edition explains what wetlands are and how they fit into our complex environmental systems. It incorporates recent court cases and regulations, discusses the functions and values of wetlands, and details the scientific classification of wetlands. Completely updated, this new edition includes new chapters covering the science of wetlands; new developments in the permitting process, enforcement, jurisdiction, and takings; an expanded scientific and legal look at isolated wetlands; and an added look at the Corps administrative appeals process. With the help of easy-to-understand flowcharts, the authors guide you through the delineation of wetlands and offer step-by-step guidance on the permit process and enforcement. As a result, you'll be able to determine which activities require a permit and which are exempt. Other topics covered include political perspectives, ecological perspectives, wetland classification, wetland delineation, administrative penalties, and litigation and defenses.