OCR Text |
Show ABSTRACT Several models in a systems analytic framework were developed in this study to develop insights into local surface water, ground water, and conjunctive resource development issues. The perspective adopted is that of a regional regulatory authority, with issues relevant to competing, local water supply agencies considered. All the models developed share a common principle. The decision variables specified are the minimal set of direct interest to the decision maker. The objective function and the constraints are related to these decision variables through a simulation of the hydrologic and economic systems. A decomposition of the management problem into linked optimization and simulation components is adopted. The strategy of using simulation to prescribe response functions for optimization, leads to compact, computationally efficient algorithms and permits the consideration of a higher degree of complexity in defining the system. Models are developed for ( a) management of stratified aquifer systems, ( b) least cost groundwater management, ( c) optimal aquifer yield determination, ( d) optimal screening of multipurpose, multi- reservoir sites for reservoir development, ( e) optimal reservoir operation, ( f) operation of a reservoir- groundwater system, ( g) selecting between reservoir and groundwater development considering, and ( h) planning reservoir development with conjunctive use of groundwater. Applications of the models developed to the water supply problems of Salt Lake County, Utah, indicate an economic preference for groundwater development, and for the integral consideration of conjunctive use of ground and surface waters to meet local demands. iv |