Definitions for "TIDAL PRISM"
Keywords:  estuary, tide, lagoon, volume, smp
(1) The total amount of water that flows into a HARBOR or out again with movement of the tide, excluding any fresh water flow. (2) (SMP) The volume of water present between mean low and mean high tide.
The difference in the volume of water in a waterbody between low and high tides.
difference between mean high-tide volume and mean low-tide volume of an estuary