Excerpts: The accompanying papers represent the first level of the sociological survey of the Rio Grande Watershed, the level of reconnaissance description. The areas described are shown on the accompanying map. Description on this first level is designed to introduce a primary organization into undifferentiated, extensive material. Since from the point of view of human use of resources a watershed is not necessarily or even usually a homogeneous area, one of the major functions of this description is to mark out within the watershed areas which are relatively homogeneous in terms of human relationships to resources. Each of these areas is then subject to unitary analysis for closer definition of problems and for the determination of the most appropriate instruments of study.
