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dc.contributor.authorAl-Shaikh-Ali, Khalid Saddiq
dc.contributor.authorSimons, Daryl B.
dc.contributor.authorLi, Ruh Ming
dc.contributor.institutionColorado State University. Department of Civil Engineering
dc.contributor.institutionColorado State University. Engineering Research Center
dc.date.accessioned2017-05-01T19:59:32Z
dc.date.available2017-05-01T19:59:32Z
dc.date.issued1978-05
dc.descriptionCER-77-78KSA-DBS-RML-46.
dc.descriptionIncludes bibliographical references (pages 18-19).
dc.descriptionMay 1978.
dc.description.abstractField and experimental evidence are presented to demonstrate the importance of the inflow of sand and gravel size sediments, released under extreme floods from watersheds and banks of streams, on resistance to flow in channels whose beds are formed of large size roughness elements such as cobbles, rocks and boulders. The released sediments fill the spacings between the large size roughness elements, and may inundate them completely, forcing the channel to behave as a sand bed channel at a much reduced resistance to flow coefficient. Under extreme conditions resistance to flow in these channels decrease to more than one-third its original value resulting in an underestimations of the following quantities: water discharge by a factor of two, sediment discharge by a factor ranging between 8 and 64, velocity of flow by a factor of two. Furthermore, an overestimation of flow depth by a factor of two can result. Impacts of failure to estimate the previous quantities with a reasonable degree of accuracy are: underestimation of the actual quantity of available water, improper selection of bank protection material, overestimation of reservoir life, unsafe design of scour depths at hydraulic structures, improper design of highway location as well as others relating to river control and development.
dc.format.mediumreports
dc.identifier.urihttp://hdl.handle.net/10217/180230
dc.languageEnglish
dc.publisherColorado State University. Libraries
dc.publisher.originalDepartment of Civil Engineering, Colorado State University
dc.relationCatalog record number (MMS ID): 991011991659703361
dc.relationTA7.C6 CER 77/78-46
dc.relation.ispartofCivil Engineering Reports
dc.relation.ispartofCER; 77/78-46
dc.subject.lcshSedimentation and deposition -- Research
dc.titleEffect of sediment on resistance to flow in cobble and boulder bed rivers
dc.typeText


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