How can strong tidal currents prevent silt from accumulating in a gulf?

Strong tidal currents prevent silt from accumulating in a gulf by maintaining high water velocities that keep fine-grained sediments in suspension, thereby inhibiting their deposition on the seafloor. In some instances, these currents are powerful enough to cause bottom erosion, which can actively deepen channels or troughs within the gulf.1

The effectiveness of these currents is often tied to the physical characteristics of the gulf. In narrow-mouthed gulfs, for example, the constriction of water flow during tidal cycles can generate significant current speeds. These currents act as a dynamic force that counteracts the tendency for silt and clay to settle, particularly in areas where river discharge would otherwise lead to high rates of sediment accumulation. By maintaining sufficient kinetic energy, tidal currents ensure that sediment is either transported out of the area or redistributed to other parts of the coastal system, such as marginal flats, rather than settling on the gulf floor.123