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<br />-11- <br /> <br />. <br /> <br />The remainder of this paper will describe the development and appli- <br />cation of a methodology by which the research goals have been achieved <br />to a large extent. These efforts may be grouped into five distinct <br />stages. First, a number of data sources were assembled to provide the <br /> <br />requisite information on the geologic, morphometric and land use charac- <br /> <br />teristics of the study watersheds. These data were subsequently conver- <br /> <br />ted into various parameters which would appropriately characterize each <br />watershed. Second, hydrologic conditions of each basin were determined <br />by standard analytical methods including flood frequency analysis. The <br />response to urbanization was based on observed changes in frequency re- <br />lations. Third, the resultant set of multivariate data was examined by <br />statistical procedures which would identify the key variables for pre- <br />dictive purposes. Fourth, the relationships among geologic, morphometric <br />and land use parameters and the hydrologic response were combined through <br /> <br />multiple regression techniques and evaluated by means of several statis- <br /> <br />tical criteria. Finally, the formal relationships derived in preceding <br />stages were modified in several respects to facilitate their utilization <br />by planners and others who are generally unfamiliar with the peculiari- <br />ties of hydrologic models. The modifications also are designed to assure <br />that the actual watershed response does not exceed the predicted response <br /> <br />in the majority of cases. <br />