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Post-glacial valley evolution and post-disturbance channel response as a context for restoration, upper Colorado River, Rocky Mountain National Park

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dc.contributor.authorRubin, Zan K., author
dc.contributor.authorWohl, Ellen E., 1962-, advisor
dc.contributor.authorRathburn, Sara L., 1962-, advisor
dc.contributor.authorBledsoe, Brian P., committee member
dc.coverage.spatialColorado River (Colo.-Mexico)
dc.coverage.spatialRocky Mountain National Park (Colo.)
dc.date.accessioned2007-01-03T05:45:25Z
dc.date.available2007-01-03T05:45:25Z
dc.date.issued2010
dc.descriptionDepartment Head: Sally J. Sutton.
dc.description.abstractIn 2003 a human-caused debris flow initiated by a breach in Grand Ditch in Rocky Mountain National Park delivered ~36,000 m3 of sediment into the Colorado River. The debris flow deposited up to ~1 m of sediment in the Lulu City wetland and major reworking of the Colorado River channel also occurred. The objectives of this study are to determine 1) how the 2003 deposit in Lulu City wetland relates to the historic range of variability in rates and processes of aggradation during the Holocene; and 2) if recovery of channel forms and processes has occurred in the Colorado River during the six years following 2003. Ground penetrating radar surveys, soil descriptions, and radiocarbon dating were used to quantify rates and processes of fill in Lulu City wetland. Channel recovery was assessed by comparing sediment transport rating curves to reference sites, monitoring changes in channel geometry, and quantifying bed material gradation. Results indicate that aggradation rates in Lulu City wetland varied through the late Holocene at periods correlated with distinct climates, and have increased approximately sixfold during the past 1-2 centuries of anthropogenic influence. Results from the Colorado River indicate channel forms and processes recovered between 2003 and 2009. Bed armoring and removal of fine sediments occurred, and channel stability persisted from 2003-2009. Results from the Lulu City wetland and impacted Colorado River can be used to guide effective restoration following the 2003 debris flow.
dc.format.mediummasters theses
dc.identifier2010_Summer_Rubin_Zan.pdf
dc.identifierETDF2010100003GEOS
dc.identifier.urihttp://hdl.handle.net/10217/39168
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationwwdl
dc.relation.ispartof2000-2019
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.titlePost-glacial valley evolution and post-disturbance channel response as a context for restoration, upper Colorado River, Rocky Mountain National Park
dc.typeText
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineGeosciences
thesis.degree.grantorColorado State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)

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