The use of spur dike has been recently considered by researchers in order to change the direction or flow regime in the lateral intake. In this study, effect of spur dikes on increasing the intake discharge, has been examined such that least turbulent,erosion and sedimentation is created. five experimental models in two different discharges were used. The model without spur dike is considered as control model, and spur dikes in other models were placed in upstream and in direction of intake, in upstream and in front of intake, in downstream and in front of intake, and in upstream and in front of intake as a form of spur dike series. The results showed that the spur dikes in downstream and in front of intake had the highest input discharge to the intake in both discharge states. lower rate of erosion and sedimentation was achieved when the spur dike is located in upstream of the channel.

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