عنوان مقاله [English]
نویسندگان [English]چکیده [English]
The precision estimating of the carried sediments content by rivers and subsequently the entered sediment content into dams, are very important in many of water-sources major management projects. For estimating of entered sedimentary load, will be applied, different methods among regressional relations as rating curves equations, which it is less considerable to procedure of use and also their precision is low, also, it will be performed to estimate content of suspensed sediments in rivers, normally, through the sediment rating curve due to high cost for continuous measurement of carried sediment and its purge.Therefor, present research intend to assess function of seven rating curve methods such as annual correlation, USBR, mean clusters, FAO-USBR, FAO-mean clusters, Fergosen-USBR and Fergosen- mean clusters, which it was performed to 34 statistical years in two stations namely Harirood-Pole Khatoon and Kashafrood-Pole Khatoon relevant to Doosti Dam.Finally, for all data, the research results indicate that better to FAO-mean clusters and Fergosen- mean clusters methods. The results of these methods were much similar. Also, by these methods were calculated useful content of rest reservoir after 34-years.