Evaluation of irrigation and drainage systems of (Southeastern Anatolia Project) GAP, the Turkey’s largest integrated water resource development project

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.