1) The document presents numerical modeling results studying net transport of fine sediments in an idealized estuary resembling the Sea Scheldt using Delft3D. 2) The initial results show that estuarine circulation alone can produce an estuarine turbidity maximum, but sediment-induced buoyancy destruction is needed to concentrate sediments near the bed. 3) Tidal asymmetry on its own does not induce net sediment transport; water-bed exchange is also required.