Synonyms for Confluence:

n.

combo, concoction, amalgam, mix, convergence, hybrid, mixture, compound, combination, blend, jumble. bed, bottom, cataract, bight, branch, crowd, cascade, backwater, gathering, assembly, channel, bayou. concentration, edge. connect. coming together (noun)
concourse, conflux, meeting, gathering, assembly, convergence, junction, crowd.
confluence (noun)
conflux, meeting, concourse, junction.
connection (noun)
junction.
location (noun)
meeting.

Other synonyms:

bayou, bight. backwater, cataract. cascade, bottom, concentration. gathering. bed. channel. branch. throng
crowd.
union
convergence.
Other relevant words:
bight, assembly, bed, concentration, convergence, gathering, crowd, bottom, cataract, combination, channel, bayou, backwater.

Usage examples for confluence

  1. The two commands now being nearly out of supplies, the trail was abandoned, and the troops kept on down Powder River to its confluence with the Yellowstone, and remained there several days. – The Adventures of Buffalo Bill by Col. William F. Cody
  2. A very little way below the old wooden bridge the little river ran into a deepish pool, as generally happens at or near a corner, especially where there is a confluence sometimes. – Erema My Father's Sin by R. D. Blackmore