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The region of higher land between two rivers that are in the same drainage system.

[Back-formation from interfluvial : inter- + fluvial.]

in′ter·flu′vi·al adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Physical Geography) a ridge or area of land dividing two river valleys
[C20: back formation from interfluvial, from inter- + Latin fluvius river]
ˌinterˈfluvial adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The nature of this region is denominated as dense, exuberant jungle of the interfluves of the Putumayo and Caqueta rivers (Hernandez-Camacho, 1992).
Correlations to hill crests and interfluves were not significant.
Fluvisols are young soils with weak horizon differentiation possessing AC-profiles and are predominantly brown in color, with texture ranging from coarse sand in levee oils to heavy clays in interfluves. The Lithosols are characterized by young soils and normally limited to a thin A-horizon over an incipient B-horizon.
The Ishim Formation or deposits of Ishim sedimentary rhythm are well distributed within the Ishim-Irtysh and Tobol-Ishim interfluves of the West Siberian Plain.
The impact of mining has also been demonstrated on the interfluves and in the headwaters of streams, where extensive upland swamps have very noticeably dried out, and in some cases destroyed, as a result of subsidence and fracturing of the solid sandstone base on which they rely (NSW Dept.
Within the Orang Rimba kindred of relations, which is generally confined to neighboring river interfluves, cousin marriages pull cognates in danger of becoming non-cognates back into a network of kin and social relations, and builds bonds of solidarity between people of the same generation level, within the confines of very asymmetrical relations of affinity (Sather 1996: 90).
For example, ironstone gravels, which are generally found on slopes and interfluves but rarely in valley bottoms, were predicted with 16% higher accuracy by DSMART than the soil map when tested against profiles.
We have researched cryosolic soils of alas ecosystems of interfluves of Lena and Amga and interfluve of Tiung and Tiukyan rivers in left-bank part of Vilyuy River.
It consists of three specific geofacies: landscape of pediplen exhumed (interfluves), landscape of pediments and inselbergs, valleys landscape.