Six rivers, representing a variety of natural environments were studied to apply and refine methods of inventorying and evaluating various aspects of the watersheds. Criteria and procedures were set up to inventory and categorize the natural and hydrologic environments; to identify and evaluate the scenic beauty and cultural values of the watersheds and to estimate their potential for recreational and personal resources. The methodology and criteria set forth should be applicable to planning of water resources for management or conservation purposes relating to recreational potential, aesthetic qualities, water use and promotion of physical stability in river systems.