Abstarct: Engineered log jams (ELJs) is the most attractive alternatives for river restoration and bank stabilization in-stream improvements. because the effects of ELJs on turbulent flow and the fluid forces acting on the ELJs are not well known completely, by introducing this item and stream pattern around of control structure could inform design criteria. In this study, used from the result of a fixed-bed physical model that was scaled from a prototype Big Sioux River to assess the introduction of ELJs along the river. Two ELJ types were examined, referred to as ELJ-1 and ELJ-2. Both types were deflector jams, where ELJ-1 was rectangular and ELJ-2 was triangular, and with one side attached to the channel bank. Although for developed of different type of numerical model, deployed either as single structures or in groups of two or three on the same side of the channel and at different distances from each other. Results show that: (1) mean and turbulent velocities and bed shear stresses were derived altered near the ELJ, but also whole of stream characteristic upstream and downstream of the structure by exiting from effectiveness region was unaffected (2) stream wise drag forces derived for the ELJs were significantly larger than the transverse forces, and the derived drag coefficients for the single structures were 2.72 for ELJ-1 and 1.60 for ELJ-2 and (3) in presence of an upstream structure created effectiveness and wake region that extended a distance of 30 flow depths downstream, which greatly reduced drag and coefficient drag that applied to downstream structure about 80 percent. These result are further evidence of the efficacy of ELJs in providing near-structure scour pool development generally, and bank protection downstream. So we could use from Eljs structure as the most economical and the most efficient types of control structure in river restoration and bank Stabilization projects.