Application of multi-criteria decision-making approach in catchment modeling and management

Choosing the best scenario is very important to the implementation of integrated catchment assessment and management. Research suggests that Multi-Criteria Decision Making (MCDM) techniques can be applied to help in the best scenario selection process. As there are many MCDM techniques, the current research performed a comparative analysis of the use of Fuzzy TOPSIS and Fuzzy AHP approaches in selecting the best scenario decision making. The comparison was made based on the following factors: acceptance of changes in criteria; computational complication; quickness in the decision process; ability to support group decision making; number of optional scenarios and criteria; and uncertainty modeling. Both techniques were used to choose the best scenario. The results indicated that both techniques are appropriate for use in selecting the best scenario, especially for supporting group decision making and uncertainty modeling. However, the Fuzzy TOPSIS approach was found to be better suited for choosing the best scenario in regard to changes in criteria, quickness, and number of optional scenarios.