AFFLUX
Etymology
Noun
afflux (plural affluxes)
An upward rush of fluid.
(hydrology) The rise in water level (above normal) on the upstream side of a bridge or obstruction caused when the effective flow area at the obstruction is less than the natural width of the stream immediately upstream of the obstruction.
Source: Wiktionary
Af"flux`, n. Etym: [L. affluxum, p. p. of affluere: cf. F. afflux.
See Affluence.]
Definition: A flowing towards; that which flows to; as, an afflux of blood
to the head.
Source: Webster’s Unabridged Dictionary 1913 Edition