The Inventory of Shared Water Resources in Western Asia is the first UN-led effort to comprehensively assess the state and evolution of transboundary surface and groundwater resources in the Middle East. The main purpose is to provide a sound scientific basis for discussion and dialogue.

The Inventory identifies all shared water resource systems within the Western Asia region and provides a descriptive analysis of each basin, including historical context.

There are 9 surface water and 17 groundwater chapters which address hydrology, hydrogeology, water resources development and use, international water agreements and transboundary water management efforts.