The report is a synthesis of SWALIM water assessments and reports, supplemented by detailed statistical analysis of the temporal and spatial variability of the available surface and groundwater resources, and their existing and potential uses. The assessment is based on the integration of hydrometeorological and physiographic data collected and analysed by SWALIM and partner agencies. The assessment describes the existing major water resources in the country, identifies special water resources needs and opportunities, documents ongoing and planned water resources development activities; it suggests practicable approaches to short and long-term water resources development at mezzo-and macro scale. The report is intended to support integrated water resources management in Somalia, based on coordinated development and management of water and land related resources.