flowage

noun

1. an act of flowing; flow.
2. the state of being flooded.
3. flowing or overflowing water, or other liquid.
4. Mechanics. gradual internal motion or deformation.

noun

1. the act of flowing or overflowing or the state of having overflowed
2. the liquid that flows or overflows
3. a gradual deformation or motion of certain solids, such as asphalt, which flow without fracture