Multi-Objective Optimization in River Water Quality Management by Means of the DSS REH

The complexity and the variety of questions and problems on both water quality and quantity have increased to such an extent that planning frameworks and management policies must be fine tuned to resource availability. Thus, the decision making process has become exceedingly complex and will become more so in the future. Conceptually man has used always models to make decisions. Water quality management, even in its simplest state, is coupled with different processes which are influenced by a lot of uncertain variables, by high-dimensional disturbances and by restricted information structures. The economic consequences of management alternatives are difficult to predict correctly. The problems are further compounded because of the difficulties associated with satisfactory aggregation of social benefits and costs for different tradeoffs.