TY - JOUR ID - TI - Empirical Formula for Estimation the Sediment Load in Shat AL-Gharaf River AU - Jaafar .S . Maatooq AU - Hassan. A. Omran AU - Haleem K. Aliwe PY - 2016 VL - 16 IS - 1 SP - 38 EP - 41 JO - Basrah Journal for Engineering Sciences مجلة البصرة للعلوم الهندسية SN - 18146120 23118385 AB - In this research, the sediment load in Shat AlGharaf River lies in the south of Iraq, has been studied.Two empirical formulas those have been presented by ;Bagnold and Van Rijn were adopted as a deterministicequations for computing the sediment discharge in selectedreaches of the river . The application of these equations requiresto do different hydraulic, sediment, and geometricmeasurements for the selected reaches. Accordingly ,thirteen sections along the river within a study area havebeen adopted. After analyzing the available data, a newthe formula for estimating the suspended sediment load in ShatAl-Gharaf was developed, depending on the data for tensections of this river and by using SPSS program, thedetermination coefficient of the new formula was (R2=0.94).The validity of the established formula has been verifiedusing some well related (i.e., nearly the same hydraulics andgeometrical circumstances) of field data over the world wasselected from published literatures [8] these are: Coloradoriver data of the U.S.B.R.(1958), River data from Leopold(1969) , and India canal data of Chaudry et.al.(1970). As wellAs those observed in the remaining three sections of presentRiver, the verification shows a good agreement.The results of the adopted two formulas and the new formulawere compared with field measurements using DiscrepancyRatio (bais) method. The suggested new formula gave thebest results where 50% of data located within a discrepancya ratio close to one and 30% of data located within an error±20%, that is referred to suitability adoption this formula as athe deterministic equation to estimate the sediment load in ShatAl-Garaf river within a study reach

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