Long-term planning of water quality management in the Bang Pakong River Basin under uncertainty

The Bang Pakong River Basin is located in eastern Thailand with an area of approximately 8,679 km2. Since the study basin is a large-scale system that contains various interactions among a number of human activities, optimization modeling is considered suitable for supporting integrated planning of these activities. Two optimization models, including a large-scale linear programming model and a chance-constrained linear programming model, will be developed. The decision variables represent human activities in 11 subareas and 4 time periods. Thus, the developed models will allow various uncertainties and complexities to be effectively communicated into the planning framework. The relevant solution methods do not lead to complicated intermediate models, and thus have reasonable computational requirements. The results indicate that acceptable solutions for various agricultural and industrial activities at different temporal and spatial units have been generated. They are useful for supporting decisions of environmental management and socio-economic planning in the study system. (Abstract shortened by UMI.)...