Reservoir sedimentation in the Demirköprü Dam, Turkey

The Demirköprü Reservoir is located on the Gediz River in West Central Turkey andhas a storage capacity of 1.32x109 m3 at Normal Water Surface Elevation. Construction of the dam was started in 1954 and completed in 1960. Sediment accumulation within the Demirköprü Reservoir influences the operation life of the dam. In the present study, reservoir sedimentation was assessed by two ways: com-parison between successive hydrographic surveys and suspended sediment measurements. Since 1960, two hydrographic surveys were carried out at Demirköprü Reservoir, i.e., in 1977 and 1991. It is seen from the final measurement that 33% of the total storage volume of the reservoir was lost due to sediment deposition. There exists only one sediment gauging station in the drainage area of the Demirköprü Reser-voir. The drainage area of the gauging station is about 50% of the total drainage area. In this study, the comparison of the two hydrographic maps together with the suspended sediment measurements is investi-gated thoroughly. Additionally, the sediment yield of the Demirköprü drainage area is estimated using both hydrographic and suspended sediment data. It is found that the sediment yield rate calculated from hydrographic surveys is almost 5.3 times that of the rate obtained from the suspended sediment measure-ments.


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Citation Formats
A. B. Altan Sakarya and M. Göğüş, “Reservoir sedimentation in the Demirköprü Dam, Turkey,” presented at the River Flow 2010, International Conference on Fluvial Hydraulics (September 8-10), Braunschweig, Almanya, 2010, Accessed: 00, 2021. [Online]. Available: