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Channel movement of meandering Indiana streams

Professional Paper 732-A

State of Indiana Department of Natural Resources
By:

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Abstract

The process of channel movement in a meander system involves rotation and translation of meander loops and an increasing path length. The amount of path-length increase is directly proportional to the impulse supplied by discharge and is inversely proportional to the silt-clay percentage of the material composing the channel perimeter.

Comparable paths have been obtained by standardizing measurements with a sine-generated curve and a moving reference axis. Analysis of previous investigations and time-of-travel data indicates that the discharge effective in channel formation consists of the range beginning just higher than the average and continuing throughout all higher discharges. Of six field sites investigated, three meander systems had path-length increases of sufficient magnitude to correlate with above-average discharge volume, one had no discernible change over a 30-year period, and two had changes which were too small for correlation owing to the short period of time covered by the available data.

Because of the consistency of yearly above-average discharge volumes, it was possible to develop a general relation between path-length increase per thousand cubic-feet-per-second-days per square mile of drainage area above average discharge and the width-depth ratio of the channel. Little progress was made toward defining relationships for rotation and translation.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Channel movement of meandering Indiana streams
Series title:
Professional Paper
Series number:
732
Chapter:
A
Edition:
-
Year Published:
1971
Language:
English
Publisher:
U.S. Government Printing Office
Publisher location:
Washington, D.C.
Contributing office(s):
Indiana Water Science Center
Description:
17 p.
Country:
United States
State:
Indiana
Online Only (Y/N):
N
Additional Online Files (Y/N):
N