SANTA ANA RIVER BASIN: AN EXAMPLE OF THE USE OF COMPUTER GRAPHICS IN REGIONAL PLAN EVALUATION


Book Description

This report explores the possibilities of computer graphics as a tool in the process of watershed planning. The research project involved a study of the Upper Santa Ana River Basin in California and addressed techniques for predicting future land use patterns, analyzing the effects of future land use on resources, the identification of desirable alternative plans for resource development, and the application of these methods toward the generation of environmental impact studies, particularly for regional-scale development decisions. The project consisted of the creation of a computerized data bank of site resources and land use elements, the development of locational attractiveness models defined by major activities or land uses occurring in the basin and the identification of the criteria which define land use decisions, the analysis of the vulnerability of various natural systems to impacts caused by future land use change, and the analysis of the attractiveness models and the impact models by evaluating two locally specified land use plans. (Author).




The Santa Ana River Basin


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Environmental Impact Assessment


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Brian D. Clark PADC Environmental Impact Assessment and Planning Unit Project Director Events throughout the world substantiate the view that planning and decision-making systems need a better integration of environ mental, economic and social considerations. Many organizations are showing considerable interest in Environmental Impact Assessment (EIA) and its role in project planning and policy evaluation and as an aid to decision-making. Consequently, it was decided to hold a NATO Advanced Study Institute on EIA for the following reasons. First there is evidence of uncertainty, particularly amongst many scientists and decision-makers, as to the nature, scope and object ives of EIA. Secondly, there is much confusion over the objectives and utility of certain EIA methods. Third, there appears to be a gulf developing between decision-makers and what they require from EIA, and the ability of the scientist to provide information which is scientifically rigorous. Finally, there appears to be little concern as to the relationship between "impact prediction" and the actual consequences ofa development activity, suggesting that if EIA is not to become both politically and scientifically disreput able greater emphasis should be placed on prediction, monitoring and post-audit studies. As will be seen from the contents of this volume the ASI attempted to address all of the above topics and indeed many more. It was perhaps inevitable that the ASI raised more questions than were answered but this is indicative of the vigorous debate that is now taking place about the role and utility of EIA.




Application of Spatial-data Management Techniques in Corps Planning


Book Description

Spatial-data management techniques allow convenient, cost-effective representation of the spatially-varying data that are necessary for effective water and related-land resources planning. Application of the techniques began in the U.S. Army Corps of Engineers in the early 1970's as an experiment. Since then, the techniques have been used for regional planning studies, major flood-control studies, and limited-scope investigations. The HEC-SAM software, developed and supported by the staff of the Hydrologic Engineering Center (HEC), has made practical these applications. Keywords: Geographic information systems; Data bases.