Book excerpt: Foreword -- Preface -- Acronyms & units of measurement -- Introduction to the inventory -- Shared water resources in Western Asia -- Key findings -- Overview & methodology: Surface water -- Euphrates River Basin -- Shared tributaries of the Euphrates River -- Tigris River Basin -- Shared tributaries of the Tigris River -- Shatt al Arab, Karkheh and Karun Rivers -- Jordan River Basin -- Orontes River Basin -- Nahr El Kabir Basin -- Qweik River Basin -- Overview & methodology: Groundwater -- Saq-Ram Aquifer System (West) -- Wajid Aquifer System -- Tawila-Mahra/Cretaceous Sands: Wasia-Biyadh-Aruma Aquifer System (South) -- Sakaka-Rutba: Wasia-Biyadh-Aruma Aquifer System (North) -- Rub'al Khali: Umm er Radhuma-Dammam Aquifer System (South) -- Gulf Umm er Radhuma-Dammam Aquifer System (Centre) -- Widyan-Salman: Umm er Radhuma-Dammam Aquifer System (North) -- Wadi Sirhan Basin: Tawil-Quaternary Aquifer System -- Anti-Lebanon -- Western Aquifer Basin -- Coastal Aquifer Basin -- Yarmouk Basin: Basalt Aquifer System (West) -- Azraq-Dhuleil Basin: Basalt Aquifer System (South) -- Taurus-Zagros -- Jezira Tertiary Limestone Aquifer System -- Jezira Basin: Neogene Aquifer System (North-West): Upper and Lower Fars -- Dibdibba Delta Basin Neogene Aquifer System (South-East): Dibdibba-Kuwait Group