Information needs for implementing public programs of resource use and control are discussed. Economic models for producing the needed data are presented as activity components of an extensive computer modeling capability. The activity components are building blocks in the construction of a workable system for relating research findings to management and policy questions in regional development. A series of activity components are presented as elements of a regional system; these elements are identified as follows: population, demand, output and employment, earnings and income, capital improvements and financing, facility location, land use, environmental management, public financing and public policy. Portions of this document are not fully legible.