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On grain roughness in rivers and streams

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dc.contributor.authorMilhous, Robert T., author
dc.contributor.authorColorado State University, publisher
dc.date.accessioned2020-02-19T17:36:35Z
dc.date.available2020-02-19T17:36:35Z
dc.date.issued2015
dc.description2015 annual AGU hydrology days was held at Colorado State University on March 23 - March 25, 2015.
dc.descriptionIncludes bibliographical references.
dc.description.abstractAn effective approach to estimate the Manning's roughness in a river is to select a grain roughness value of Manning's n for the bed material and then add other components of roughness to the grain roughness. The grain roughness is represented by the size and shape of the grains of the material that form the stream bed. Cross section irregularities, channel alignment, vegetation, obstructions, and other factors that increase roughness and added to the grain roughness. The objective of this paper is to improve on ability to calculate grain roughness in gravel-bed rivers where the grain roughness is represented by Manning's roughness. Equations developed by G.A. Griffiths are considered to be equations that can be used to estimate the grain roughness. A method of estimating grain roughness using quantile regression shows comparable results to the Griffiths equations based on the Griffiths data and another set of data from Northern California. Data from Arizona and New York was also used to develop equations for grain roughness. These equations are very different from the Griffiths equations. A discussion of a possible reason for difference in the different equations for grain roughness is presented.
dc.format.mediumborn digital
dc.format.mediumproceedings (reports)
dc.identifier.urihttps://hdl.handle.net/10217/201074
dc.identifier.urihttp://dx.doi.org/10.25675/10217/201074
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofHydrology Days
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.titleOn grain roughness in rivers and streams
dc.title.alternativeHydrology days 2015
dc.title.alternativeAGU hydrology days 2015
dc.typeText

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