Abstract

The Southeastern Anatolia Project (GAP), the Turkey’s largest integrated water resource project, is among the world’s most important regional development projects in terms of numeric size and influence. In the present study, irrigation systems and drainage requirements within the scope of GAP in the Euphrates and Tigris Basins are investigated. With the data collected, an attempt was made to determine the potential operational problems in terms of present requirements by investigating water resources, irrigation systems, and water distribution methods, efficient use of water control structures, valves, and water, and drainage requirements and systems based on field observations. In order to solve these problems and ensure that similar problems are not experienced in future projects, recommendations related to needs are made on subjects such as management and operation models that will achieve optimum use of resources, institutional and legal contents, social and cultural behaviors, environmental interaction potential, and economic requirements. A summary of wide-ranging research carried out in the study area, problems and recommendations are presented together.

Key words: GAP region, water resources, irrigation systems, drainage.