Dr. Alfaisal’s published many of scientific papers that related to water resource problems. He expertise is in developing optimization models, planning and designing of regional wastewater systems, water resources assessment, storm sewer system design. He developed a reservoir operation models that can be used for irrigation systems. He has excellent experience in developing simulation models for sustainable water distribution systems and environmental impact assessment. He worked in developing integrated water resources management (IWRM) for Hali and Bisha watersheds. Participated in many conferences, workshops, and meeting forums that related to water resources.