Multistreaming events are of great interest to astrophysics because they are associated with the formation of large scale structures (LSS) such as halos, filaments and sheets. Until recently, these events were studied using scalar density field only. In this talk, we present a new approach that takes into account the velocity field information in finding these multistreaming events. Six different velocity based feature extractors are defined, and their findings are compared to a halo finder results. We discover that velocity based methods provide us with a richer knowledge about the formation of LSS.