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Amplification of downstream flood stage due to damming of fine-grained rivers

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dc.contributor.authorMa, Hongboen
dc.contributor.authorNittrouer, Jeffrey A.en
dc.contributor.authorFu, Xudongen
dc.contributor.authorParker, Garyen
dc.contributor.authorZhang, Yuanfengen
dc.contributor.authorWang, Yuanjianen
dc.contributor.authorWang, Yanjunen
dc.contributor.authorLamb, Michael P.en
dc.contributor.authorCisneros, Juliaen
dc.contributor.authorBest, Jimen
dc.contributor.authorParsons, Daniel R.en
dc.contributor.authorWu, Baoshengen
dc.date.accessioned2024-11-05T18:21:53Zen
dc.date.available2024-11-05T18:21:53Zen
dc.date.issued2022-06en
dc.description.abstractRiver dams provide many benefits, including flood control. However, due to constantly evolving channel morphology, downstream conveyance of floodwaters following dam closure is difficult to predict. Here, we test the hypothesis that the incised, enlarged channel downstream of dams provides enhanced water conveyance, using a case study from the lower Yellow River, China. We find that, although flood stage is lowered for small floods, counterintuitively, flood stage downstream of a dam can be amplified for moderate and large floods. This arises because bed incision is accompanied by sediment coarsening, which facilitates development of large dunes that increase flow resistance and reduce velocity relative to pre-dam conditions. Our findings indicate the underlying mechanism for such flood amplification may occur in >80% of fine-grained rivers, and suggest the need to reconsider flood control strategies in such rivers worldwide.en
dc.description.versionPublished versionen
dc.format.extent11 page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifierARTN 3054 (Article number)en
dc.identifier.doihttps://doi.org/10.1038/s41467-022-30730-9en
dc.identifier.eissn2041-1723en
dc.identifier.issn2041-1723en
dc.identifier.issue1en
dc.identifier.orcidCisneros, Julia [0000-0001-6451-4180]en
dc.identifier.other10.1038/s41467-022-30730-9 (PII)en
dc.identifier.pmid35650197en
dc.identifier.urihttps://hdl.handle.net/10919/121555en
dc.identifier.volume13en
dc.language.isoenen
dc.publisherNature Portfolioen
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/35650197en
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subject.meshRiversen
dc.subject.meshGeologic Sedimentsen
dc.subject.meshChinaen
dc.subject.meshFloodsen
dc.titleAmplification of downstream flood stage due to damming of fine-grained riversen
dc.title.serialNature Communicationsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherArticleen
dc.type.otherJournalen
dcterms.dateAccepted2022-05-16en
pubs.organisational-groupVirginia Techen
pubs.organisational-groupVirginia Tech/Scienceen
pubs.organisational-groupVirginia Tech/Science/Geosciencesen
pubs.organisational-groupVirginia Tech/All T&R Facultyen
pubs.organisational-groupVirginia Tech/Science/COS T&R Facultyen

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