البحث — المستودع الرقمي العراقي

المستخلص: تناولت الدراسة المشاريع الاروائية المكتملة الانجاز في محافظة كربلاء وهي مشروع (ري الحسينية) الذي يقع على الجانب الايمن لنهر الفرات ضمن محافظتي بابل وكربلاء، يعد جدول الحسينية هو الجدول الوحيد الذي يؤمن احتياجات الارواء الزراعي ومياه الشرب للسكان، اما مشرو | The study deal with the completed irrigation projects in Karbala government the project of Al - hosaynyya irrigation located on the right side of the Euphrates River into the provinces of Babil and Karbala and Al - hosaynyya river consider the only one that secure the needs of irrigation for the project and cleaning water needs for population.For Bani Hasan project is from old projects that depend on its irrigation on Bani Hasan river and project lands located to the right side of Euphrates River within the provinces of Karbala, Najaf and Babil.The study included natural factors affecting the region represented by the geology of the region, it fall within the time of quaternary deposits, and it is modern deposits don't exceed of a few centimeters to a several meters and with semi - flat plain topography covered by flood sediments in different levels ranging from zone level from the highest point 45 m above sea level and ends at lowest point 17 m above sea level and on this basis the surface gradually slope from the North to the South, the most important characteristic of this slope is that the ground move to decrease from the east and west toward the center and have the impact on the act of cutting, orientation and slope of irrigation rivers and this form has played a key role in directing the irrigation canals in the area easily from the rivers canals towards the nearby lowlands. Region characterized by desert dry and semi dry climate, which reflected its effects on the activity on geomorphological work in the irrigation projects and the only human factor is the agricultural activity, which has great influence in changing of flow geomorphology and on the hydraulic pressure forces.The study showed the characteristics of the prevailing geomorphological processes in the river represent by erosion processes and the carving and sedimentation the study showed activity to the process of erosion is compatible with high discharge rates because higher rates appeared during July (21, 94 m3/s) and is compatible with the upper limit of the suspended loads amounted its quantity (0, 52 tons).For the process of carving and sedimentation, the study showed the activity of these processes taken to (9) places of measurement has appeared (6) places occurred act of carving in Al - hosaynyya project, and (14) measured position appeared ( 11) points where the process of carving occurred in Bani Hasan project, the study also showed sedimentation activity that total of ( 9) of measured places showed ( 3) points where process of sedimentation of Al - hosaynyya irrigation project for Bani Hasan as (14) position appeared (3)that act of sedimentation occurred.The study revealed the presence of(carving, sediment forms) represented by river turns and carving, sediment forms of represented by river islands.It was found that the course of projects did not divert its course but study showed that new islands appear never existed previously and also the emergence of river tongues