الملخص

This study aims to analyze and study the river islands located on the Tigris River between the Wana regulatory dam and Badoush dam, for the purpose of identifying the reasons for the formation of these islands, knowing their geomorphic characteristics, and identifying the most important changes that occurred in the study area. Reliance is made on topographic maps and satellite visuals for the years 1990 and 2022, in addition to studying geology, climate, and factors affecting the emergence and development of riverine islands in the region, and determining the quantities of water discharge to the river to understand its impact on the river islands. The results show clear changes in the locations, sizes and numbers of river islands in the study area. These changes are due to changes in the amounts of water discharge to the river between 1990 and 2022. The results also demonstrate the importance of geological, climatic and topographical factors in the formation of riverine islands. The importance of this study is to increase our understanding of the changes that occur on river islands over a period of more than thirty years. The contribution of the results and analyzes lies in determining the factors affecting the formation and development of river islands in the studied area. Accordingly, the study sheds light on the major changes in the numbers, locations, sizes and shapes of riverine islands in the study area between 1990 and 2022. It also discusses the most important factors influencing these changes.