noun (n)

• gradual internal motion or deformation of a solid body (as by heat)(noun.process)

  Example:
  Rock fracture and rock flowage are different types of geological deformation.
  

  source: wordnet30
• a body of water that has been created by deliberately flooding an area(noun.object)

  Example:
  Many campsites were located near the flowage.
  

  source: wordnet30
• the act of flooding; filling to overflowing(noun.act)

  Synonym:
  flood
  

  source: wordnet30
• An overflowing with water; also, the water which thus overflows.(noun)

  source: webster1913