Group Analytic Hierarchy Process (GAHP) — Fuzzy method for evaluation of irrigation district management

A new method for evaluating the level of irrigation district management is proposed. Qualitative indexes for evaluating the level of irrigation district management are relatively scaled and are processed by group AHP. Accordingly quantitative indexes are absolutely scaled and are treated by AHP. By these two analyses, the level of district management is firstly quantitatively evaluated. Fuzzy cluster analyses is then further applied to treat qualitatively the level of irrigation district management. A calculation example is also given in this paper. Data collected from 11 irrigation districts is analysed. Management level of these 11 districts are clustered into three groups. Results seem to be satisfactory. The method proposed here seems to be useful for other related evaluation systems as well.