On relative width and form of river channel

Abstract

Relative width of channel within limits of rectilinear deep sections (before the river floods over the floodplain surface) is shown to change in proportion with water discharge (mean seasonal values). When the discharge changes are considered in the course of channel filling within a year, an inverse regularity is observed: relative width of channel decreases when discharge increases. Cross-section in case of high level is closer to rectangular when compared with its form under low level conditions.