Confluence of rivers, the Mosel flows into the Rhine at Koblenz. The Name "Koblenz" itself has its origin in the latin name "Confluentes"
Confluence of the Bhagirathi and Alaknanda Rivers to produce the Ganges at Devprayag, India. Note the swirl of sediment from the Alaknanda.
Confluence of canals
This simplified diagram shows how a section of the Industrial Canal in New Orleans also serves as the channel for the Gulf Intracoastal Waterway and the Mississippi River-Gulf Outlet Canal. At the bottom, a portion of the Intracoastal is also shown to be confluent with the Mississippi River.
The confluence of the Rio Negro (black) and the Rio Solimões (sandy) near Manaus, Brazil.

In geography, a confluence is the meeting of two or more bodies of water. It usually refers to the point where two streams flow together, merging into a single stream. It can be where a tributary joins a larger river, called the main stem, or where two streams meet to become the source of a river of a new name, such as the confluence of Bell Creek and Arroyo Calabasas, forming the Los Angeles River. In a broader sense, the merging of any two streams is a confluence.[1]

The term is also used to describe the meeting of tidal or other non-riverine bodies of water, such as two canals[2] or a canal and a lake.[3] A one-mile (1.6 km) portion of the Industrial Canal in New Orleans accommodates the Gulf Intracoastal Waterway and the Mississippi River-Gulf Outlet Canal; therefore those three waterways are confluent there.


Notable confluences

Integer latitudes and longitudes

Lat. 23°00'00"S X Long. 49º00'00"W

The Degree Confluence Project has adapted the word "confluence" for describing points where integer latitude and integer longitude lines cross. The point in extreme northeastern New Jersey at 41°0′0″N 74°0′0″W / 41°N 74°W / 41; -74 is such a "confluence point".[5]

See also


  1. ^ "confluence". Unabridged. Random House. Retrieved 1 December 2010. 
  2. ^ The U.S. Army Corps of Engineers refers to the confluence of the Assawoman Canal with the Bethany Loop Canal in Delaware. See: "CENAP-OP-R-Quarterly Report, 2004-05-12". Philadelphia Engineer District. Retrieved 2006-03-11. 
  3. ^ Engineers in New Orleans refer to the confluence of the 17th Street Canal and Lake Pontchartrain. See: "Interim Closure Structure at 17th St. Canal". Task Force Guardian. Archived from the original on 2006-06-25. Retrieved 2006-03-11. 
  4. ^
  5. ^ "Information about Degree Confluences: Definition". Degree Confluence Project. Retrieved 2010-01-12. 

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Look at other dictionaries:

  • confluence — [ kɔ̃flyɑ̃s ] n. f. • mil. XVe; lat. confluentia, de confluere → confluer ♦ Fait de confluer. Confluence de deux fleuves. ⇒ confluent. Par anal. La confluence de deux corps d armée. ⇒ 1. rencontre. Fig. La confluence des courants de pensée. ●… …   Encyclopédie Universelle

  • Confluence — bedeutet den Kanu Hersteller Confluence Watersports Degree Confluence Project Konfluenz Konfluenz (Informatik), die Eigenschaft eines Transitionssystems, jedem Element nur höchstens eine Normalform zuzuordnen Konfluenz (Zellkultur) das… …   Deutsch Wikipedia

  • Confluence — Con flu*ence, n. [L. confluentia.] 1. The act of flowing together; the meeting or junction of two or more streams; the place of meeting. [1913 Webster] New York stood at the confluence of two rivers. Bancroft. [1913 Webster] 2. Any running… …   The Collaborative International Dictionary of English

  • Confluence — Confluence, PA U.S. borough in Pennsylvania Population (2000): 834 Housing Units (2000): 404 Land area (2000): 1.596582 sq. miles (4.135129 sq. km) Water area (2000): 0.052398 sq. miles (0.135709 sq. km) Total area (2000): 1.648980 sq. miles… …   StarDict's U.S. Gazetteer Places

  • Confluence, PA — U.S. borough in Pennsylvania Population (2000): 834 Housing Units (2000): 404 Land area (2000): 1.596582 sq. miles (4.135129 sq. km) Water area (2000): 0.052398 sq. miles (0.135709 sq. km) Total area (2000): 1.648980 sq. miles (4.270838 sq. km)… …   StarDict's U.S. Gazetteer Places

  • confluence — index assemblage, coalescence, coalition, company (assemblage), corpus, crossroad (intersection) …   Law dictionary

  • confluence — early 15c., from L.L. confluentia, from L. confluentem (nom. confluens), prp. of confluere to flow together, from com together (see COM (Cf. com )) + fluere to flow (see FLUENT (Cf. fluent)) …   Etymology dictionary

  • confluence — *junction, concourse …   New Dictionary of Synonyms

  • confluence — [n] coming together assemblage, assembly, concourse, concurrence, concursion, conflux, convergence, crowd, gathering, host, junction, meeting, mob, multitude, union; concepts 109,114 …   New thesaurus

  • confluence — ► NOUN 1) the junction of two rivers. 2) an act or process of merging. DERIVATIVES confluent adjective. ORIGIN from Latin confluere flow together …   English terms dictionary

  • confluence — [kän′flo͞o əns] n. [OFr < LL confluentia < L confluens, prp. of confluere < com , together + fluere, to flow: see FLUCTUATE] 1. a flowing together, esp. of two or more streams 2. the place where they join, or a stream formed in this way… …   English World dictionary

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