Impact of Climate Change on Integrated Management of Water Resources in The lower Basin of Diyala River, Iraq

Climate change could affect the world's water resources system, especially at level of basin. would impact streamflow and corresponding future resources. The lower basin Diyala River is currently experiencing shortage contamination issues. This study aims to use Water Evaluation And Planning (WEAP) model create an integrated modeling system for evaluating effects climate on supply demand within WEAP was calibrated verified employing monthly data from outflow station. Following that, loaded with various scenarios ranging 2020-2045. Future used included reference scenario, high population growth rate scenario. results indicated that accurately predicted basin's demand, RMSE, NSE, R² values 0.85, 0.91, 0.867, respectively, throughout validation period. Furthermore, were found be unmet in all projected scenarios, showing sustainable management highly required.