A land use unit using information from space programs is intended to help secondary teachers develop, plan, and implement land use programs in the social studies classroom. The subject of this unit is a flood control dam in Colorado. Interdisciplinary curriculum includes activities in mapmaking, environmental and mathematical studies, local community history, and physical geography. The project may be used in its present form or altered to fit a land use investigation in an existing curriculum. The publication is divided into three major parts. Part I describes the multidisciplinary unit concept, provides a curriculum outline, specifies objectives, suggests other land use studies, and outlines learning activities involving aerial photographs, drainage basins, flood threats to a community, water volume during a flood, location of flood control dams types of dams, and effects of dam construction. The second part gives advice on where to obtain and how to use data for surveys. Part III provides information on factors that influence land use and suggests class activities. Topics discussed include rural and urban land use, transportation, commerce, agriculture, forestry, recreation, and environmental protection. Maps, aerial photographs, and a bibliography are included in the document. (Author/DB)