Picture it. Italy. 2000. The Po river has a flood of a magnitude not seen for 50 years. The particle load unleashed onto the near shore off the delta in the Adriatic Sea is ripe for research. What were we looking for? Flocs. Don't know what a floc is?
A floc is a particle aggregate. Flocs rule the world ocean.
The following paper looks at data from the Po River delta and reveiws a host of studies from varied environments to decree that you can confidently estimate floc settling velocity to be 1 mm/s
How does one determine the proportion of flocs as opposed to single grain particles is suspension? Well, it takes some video footage, savvy matlab coding, and a plan for floc domination.