The application of multi-criteria (AHP-PROMETHEE) decision-making methods in selecting and prioritizing the green area irrigation resources

One of the underlying factors in the conservation and development of urban green spaces is the available water resources use for green areas in each region. The primary purpose of this study is to introduce the integration of a proper simulation method for runoff along with AHP-PROMETHEE decision-making method for water resources management in urban basins. The application of this approach was investigated in the city Buin Zahra of Qazvin Province of Iran. In the first step by using the analytic hierarchy process (AHP), the available water resources in the case study were weighted. In the second step, the water resources of the municipal and residential wells and water collected by precipitation and flooding were investigated to provide irrigation water. The Storm Water Management Model was applied to optimize water resources use from the flood as a solution to save potable water. The simulation was performed for precipitation with a return period of 5 and 10 years, for 6-h intervals. The simulation results were carried out for a total of 25 nodes, and the discharge was calculated, which is between 0.95 up to 1.2 cubic meters per second. The flow of the resulting discharge can feed the required water for green areas. Also, the available water resources in the case study were weighted by Expert Choice and were finally selected by using the Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE). The results indicated that residential wells had the priority in supplying irrigation water for green areas.