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Predictive techniques for river channel evolution and maintenance

Water, Air, and Soil Pollution

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DOI: 10.1007/BF00619292

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Abstract

Predicting changes in alluvial channel morphology associated with anthropogenic and natural changes in flow and/or sediment supply is a critical part of the management of riverine systems. Over the past few years, advances in the understanding of the physics of sediment transport in conjunction with rapidly increasing capabilities in computational fluid dynamics have yielded now approaches to problems in river mechanics. Techniques appropriate for length scales ranging from reaches to bars and bedforms are described here. Examples of the use of these computational approaches are discussed for three cases: (1) the design of diversion scenarios that maintain channel morphology in steep cobble-bedded channels in Colorado, (2) determination of channel maintenance flows for the preservation of channel islands in the Snake River in Idaho, and (3) prediction of the temporal evolution of deposits in lateral separation zones for future assessment of the impacts of various dam release scenarios on lateral separation deposits in the Colorado River in Grand Canyon. With continued development of their scientific and technical components, the methodologies described here can provide powerful tools for the management of river environments in the future.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Predictive techniques for river channel evolution and maintenance
Series title:
Water, Air, and Soil Pollution
DOI:
10.1007/BF00619292
Volume
90
Issue:
1-2
Year Published:
1996
Language:
English
Publisher:
Kluwer Academic Publishers
Publisher location:
Dordrecht, Netherlands
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Water, Air, and Soil Pollution
First page:
321
Last page:
333
Conference Title:
Proceedings of the 1995 International Clean Water Conference on Clean Water: Factors that Influence its Availabilty, Quality and its Use
Conference Location:
La Jolla, CA, USA
Conference Date:
28 November 1995 through 30 November 1995