The vegetation on the river floodplains has a significant impact on how the water flow in a river. When there is vegetation in the water, the way it flows gets more complicated because of how the water interacts with the vegetation. It depends on how big the vegetation is, their shape, how they're spread out, and how deep the water is. In this laboratory study, we aim to understand how water velocity is distributed in an open channel that contains vegetation. To simulate natural vegetation, we used artificial plants with uneven shapes and varying widths. Based on the vegetation's characteristics and the water's depth, we observed two distinct flow patterns: one in the lower layer with vegetation and another in the upper layer without vegetation. We used an ADV (Acoustic Doppler Velocimeter) to measure velocities in three directions. We analyzed and compared the distribution of vertical and transverse velocities at various positions along the straight channel flume. The stable velocity profile along the stream shows a significant change in velocity at the upper part of the vegetation layer. The vertical velocity profiles differ between the non-vegetated and vegetated layers, with the upper free water layer following a logarithmic law. Moreover, the transverse velocity distribution in the vegetated flow is noticeably distinct from the non-vegetated flow.