Abstarct: Channel stabilization and restoration efforts have been increased dramatically with excessive cost since 1990. However, it is estimated that at least 50% of these projects fail and others may not perform as expected. Therefore, stream restoration today is more of an art than a science. To maintain a navigable channel and improve flow conveyance by dividing the channel into two main and side channels, engineers have recently proposed constructing longitudinal training walls as an alternative to the traditional transverse groynes. In the present study, the performance of longitudinal training walls and groynes on bed and wall shear stresses was investigated numerically by solving Reynolds-averaged Navier-Stokes equations with the k-ɛ turbulence model using Flow-3D software applying finite volume method. Results of the single groyne simulation were validated baxsed on experimental data, and results of the series of groynes simulation were compared to the available numerical data with a good agreement. In this study, twelve simulations were performed for longitudinal training walls in different longitudinal and transverse positions with continuous and non-continuous forms. The results showed that this system, compared to the traditional groyne system, introduces less bed shear stress and has the ability to control the wall shear stress dynamically. This system, by providing a mild flow in the side channel, has a favorable effect on aquatic habitat and ecosystem, besides high ability to transfer additional flood discharge. So, this system can be used as an appropriate replacement for traditional transverse groynes.