ABSTRACT
The main reason for losing water storage capacities is siltation in the basin area. There are many different techniques throughout the world to overcome this siltation problem. Some of these techniques deal with inflowing sediment. On the other hand, some of them try to remove siltation. However, throughout the world the problematic regions do not use the same techniques because every basin has different characteristics; geological, geographical and climatic, etc. For example, the dredging technique is mostly used in semi-arid regions like China. On the other hand, in the north European countries, in rainy regions, flushing techniques are used.
