Mass Balance

The mass balance equation for sediment in a water body is:

$sed_{wb}=sed_{wb,i}+sed_{flowin}-sed_{stl}-sed_{flowout}$ 8:2.1.1

where $sed_{wb}$ is the amount of sediment in the water body at the end of the day (metric tons), $sed_{wb,i}$ is the amount of sediment in the water body at the beginning of the day (metric tons), $sed_{flowin}$ is the amount of sediment added to the water body with inflow (metric tons), $sed_{stl}$ is the amount of sediment removed from the water by settling (metric tons), $sed_{flowout}$ is the amount of sediment transported out of the water body with outflow (metric tons).