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Webster 1913 Edition

Noun.

[L.

affluxum

, p. p. of

affluere

: cf. F.

afflux

. See

A flowing towards; that which flows to;

as, an

afflux

of blood to the head

Noun.

[L. affluxum, from affluo. See Flow.]

The act of flowing to; a flowing to, or that which flows to; as, an afflux of blood to the head.

afflux ‎(plural affluxes)

an upward rush of fluid
- 1874 January 9, "Chemical News from Foreign Sources," Chemical News , page 26, of waterspouts:
  The vis viva of these affluxes is employed almost wholly in turning the mass of intermediate gas..."
(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.
- 2004, Transportation Association of Canada, Guide to Bridge Hydraulics , ISBN 0727732625, page 66 :
  "Backwater due to the crossing as a whole should not be confused with local afflux at piers due to pileup of flow against the hydraulic stagnation point..."