Determination of Sediment Result of Flood with Using Fuzzy Methods (Case Study: Karoon River)

s: Calculation of sediment load through Rivers is one of basic issues through designing of Hydraulic structures. Studies about possibility of dam hydro and power plant and other hydraulic structure without consider of sedimentation behavior has very important role practically. Some empirical experience has been presented experimentally, defining and modifying of these equations and presentation new formula. It shows that, a new analytical or suitable experimental equation in order to estimate of sediment conveying criteria rarely. Generally, Normal methods with a suitable exponential equation, from data, about discharge or sediment flux, were been determined. With using this function, translated sediment. Volume were been calculated experimentally. This type of equation didn’t have distinguished potential side to evaluate specific characteristic of data series, deductively. They couldn’t determine exact value of conveying sediment by flow rate and it’s not possible to calculate Time changing at average flow rate subsequently. At this paper, not only all result of Suspended local sediment, with applying common methods such as normal statistical method or fuzzy methods, have been evaluated ,but also, compared with each other. Plus, two types of methods were analyzed carefully. This study shows this phenomenon probably possible to occur. Time series were been investigated perfectly (through transformed sediment yield), besides it has been deducted that phase method has accurate and more acceptable Results than other methods and a better convergence were been observed logically. Finally, fuzzy method evaluated more sediment yield than other utilizing methods. Key word: Sediment load Karoon River Fuzzy method Statistical program Aggression relation ship INTRODUCTION experimental relation, for modification and calibration, Erosion on watershed plain, bed erosive sediment particles properties or hydraulic condition, phenomenon, silt and clay movements are most independence of flushed load from basin plate as important factors to make a form of River beds, At rivers conclusion. Lack of suitable analytical or practical consequentially. If because of any reason, flow velocity equation, based on true and exact data, are important or sediment potential ratio has been decreased, Sediment factor of exact method of sediment calculation (especially particles would have been more or changed their position sediment movement) Because of these reasons, deep by flow Rate (discharge) normally. They were been difference between. Laboratory of field study of sediment stayed at river bed and they caused save change behavior were observed normally. of river (morphological change). Then prediction of river At regression method, measurement values of flow morphology characteristic:, determination of sediment discharge and sediment concentration have been plotted balance has special effects surely. against each other, then, a new and suitable function has Different methods for estimating of sediment yield been achieved subsequently. Recent study shows that: a and subsequently sediment (material deposited) flow of function of discharge P= a Q^b is the best equation river are there empirical equations and statistical between measured discharge and concentration ratio and regression are known as general method for conveying a and b values are real number and they have been driven sediment transformed by river. Some presented from data regression equations. need wide variety of sediment information such as: World Appl. Sci. J., 10(10): 1139-1145, 201