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Evolution of cutoffs across meander necks in Powder River, Montana, USA

Earth Surface Processes and Landforms

By:
, , , , , and
DOI: 10.1002/(SICI)1096-9837(199807)23:7<651::AID-ESP891>3.0.CO;2-V

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Abstract

Over a period of several decades, gullies have been observed in various stages of forming, growing and completing the cutoff of meander necks in Powder River. During one episode of overbank flow, water flowing over the down-stream bank of the neck forms a headctu. The headcut migrates up-valley, forming a gully in its wake, until it has traversed the entire neck, cutting off the meander. The river then follows the course of the gully, which is subsequently enlarged as the river develops its new channel. The complete process usually requires several episodes of high water: in only one of the five cases described herein was a meander cutoff initiated and completed during a single large flood.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Evolution of cutoffs across meander necks in Powder River, Montana, USA
Series title:
Earth Surface Processes and Landforms
DOI:
10.1002/(SICI)1096-9837(199807)23:7<651::AID-ESP891>3.0.CO;2-V
Volume
23
Issue:
7
Year Published:
1998
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Earth Surface Processes and Landforms
First page:
651
Last page:
662
Number of Pages:
12