The formation and propagation of vortex dipoles play an important role in the flushing of estuarine regions. Estuaries depend on the transport of nutrients and sediments from the open sea to help maintain a prosperous environment. At the mouth of an inlet, tidal flow forces the formation of two vortices with opposite rotation, referred as the starting-jet dipole. These two dimensional vortical structures have lateral extents much greater than the water depth and are characterized as shallow flows. As the starting-jet vortices develop and flow through the inlet continues, secondary vortices shed due to separation from the inlet boundary, and eventually reach the starting-jet dipole. Starting jet vortices can either aid or hinder the transport of nutrients and sediment between these bodies of water. It is critical to understand the dynamics of this exchange because of the impact on water quality in the estuary and the role it plays in the life cycle of certain fish [3, 4, 5]. Without proper mixing, the circulation of fish larva from the sea to the estuary is impeded and the estuary can become