Sahra Taheri - Msc. Student in Water Resources Management Engineering, Gorgan University
Parisa Taheri - Regional Water Company of Alborz Province,phD. Student in Civil Engineering Transportation Major, Shomal university
Masoume Taheri - Electricity Distribution Company of Alborz Province,Msc. in Artificial Intelligence Engineering, Kharazmi University
Mansour Taheri - Ministry of Agriculture
Gelare Taheri - Information Technology of Refah Kargaran Bank, Tehran province,Msc. in Software Engineering, Alzahra University

Water scarcity and droughts in arid regions pose significant challenges to agricultural production andenvironmental sustainability. This study presents an integrated hydrologic-agronomic-economic modeldesigned to optimize water allocation strategies in the Miyandoab Plain, located in the Urmia Lake basin innorthwest Iran. The model aims to maximize agricultural profitability while sustaining adequateenvironmental flows to Urmia Lake during droughts. Through multi-objective optimization, the modelidentifies Pareto optimal solutions that balance economic and environmental objectives. The integratedmodel incorporates physically-based hydrologic modeling, agronomic crop production functions, andeconomic analysis of agricultural profits. Results demonstrate the trade-offs between agriculturalprofitability and environmental sustainability, highlighting the potential benefits of proposed watermanagement strategies. The model provides valuable insights for sustainable water resources planning insemi-arid agricultural regions facing water scarcity and climate variability.

Water scarcity, Whale optimization algorithm, sustainable water allocation, agriculturalprofitability, environmental flows.