reservoir operation rule curve of doroodzan dam using yield model

abstract regarding temporal variation of rivers discharge and demands, for suitable use of dam reservoirs stored water, application of operation rule curves is necessary. operation rules are expressed with rule curves. application of yield model is one of the methods of operation curve preparation, which correlates reservoir operation with reservoir storage volume in first period. in this study after description standard operation policy and yield model, based on these models two computer programs in fortran language were prepared for reservoir operation. then based on yield model, doroodzan dam rule curve achieved based on yield model and results were compared with sop model. results showed that sum square of deficit in yield model was significantly 73.27 percent less than sop model, which expresses model ability in derivation of dam reservoir operation rule curve. yield model in addition to decrease of water deficiency, supplies absolute demands and distributes deficit uniformly in more years.