As in the other "free-floating" exhcanges portrayed in the model (salt, nutrients, phytoplankton, etc.), suspended sediments (TSS) are heavily dependent on the speed of the currents to flux through the bay. The fraction of TSS that moves out of the cell is proportionate to the fraction of surface water that moves out of the cell to total amount of water in the cell. Water movement is calculated in the global input sector.
Sediments are input into the water column through river input and erosion from bottom sediments. Sediments are removed from the water column by settling to the bottom. Suspension is calculated by estimating the potential erosion, which is a function of the structure of the vegetation (which acts to trap sediments) and the stress effect. Deposition is a function of the amount of sediments in the water column as well as the settling velocity.
* Note: only spatial movement to the north is portrayed here for the sake of simplicity. Movement to the south, east, and west is calculated in the same manner.