The phenomenon of alternating vortices known as von-Kármán vortex paths occurs when fluid flows past bluff bodies such as a horizontally suspended cylinder. An array of alternating vortices in such cylinder wakes explains this phenomenon. This vibration is principally caused by the interaction of cylinder geometry and fluid flow. Flow turbulence also impacts the behavior of these vortices. This research, therefore, compares flow fields around such a Dc diameter cylinder positioned at Dc/2 and Dc depths. To increase the vortices’ strength, a 1.25Dc wide vertical plate was placed 2.25Dc downstream of that cylinder. A 35 lps discharge at 4.25Dc flow depth was followed to measure velocities and their directions to observe their characteristics around boundary layers. Vector components of surrounding flow fields in the vertical cross-section describe the composite characteristics of horseshoe vortices and alternate vortices shedding produced by the cross-wise placed moving cylinder. With defining the flow fields in complex hydrodynamic structures underwater, several further environmental concerns come into play. Technological advances for sustainable energy production have been the focus of many researchers. One of these initiatives is the creation of an environmentally friendly hydrokinetic device that uses a linear generator to capture energy using vortex-induced vibration (VIV). It also aims to evaluate the relationship between voltage and power obtained from existing literature on VIV, which can significantly contribute to environmentally responsible green energy production.