FLOWAGE
flood, flowage
(noun) the act of flooding; filling to overflowing
flowage
(noun) a body of water that has been created by deliberately flooding an area; “many campsites were located near the flowage”
flowage
(noun) gradual internal motion or deformation of a solid body (as by heat); “rock fracture and rock flowage are different types of geological deformation”
Source: WordNet® 3.1
Etymology
Noun
flowage (countable and uncountable, plural flowages)
A flowing or overflowing of liquid.
Source: Wiktionary
Flow"age (; 48), n.
Definition: An overflowing with water; also, the water which thus
overflows.
Source: Webster’s Unabridged Dictionary 1913 Edition