We present a feature-based vector simulation approach for simulating local wave phenomena which often appear in streams. By using this approach, we simulate the wave pattern in front of an obstacle in a flow. Based on laws in hydrodynamics, we present an efficient geometric construction method which can generate and animate the vector features of the target wave phenomenon. From the vector information, we are able to build feature aligned mesh for capturing the high-resolution details of the local waves. The results show that our approach is suitable for real-time applications. The approach also allows users to intuitively control the animation.