Effects of Large Wood on Floodplain Connectivity in a Headwater Mid-Atlantic Stream

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dc.contributor.authorKeys, Tyler A.en
dc.contributor.authorGoverner, Heatheren
dc.contributor.authorJones, C. Nathanen
dc.contributor.authorHession, W. Cullyen
dc.contributor.authorHester, Erich T.en
dc.contributor.authorScott, Durelle T.en
dc.contributor.departmentCivil and Environmental Engineeringen
dc.contributor.departmentBiological Systems Engineeringen
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.date.accessioned2019-01-18T19:48:32Zen
dc.date.available2019-01-18T19:48:32Zen
dc.date.issued2018-05-08en
dc.date.updated2019-01-18T19:48:31Zen
dc.description.abstractLarge wood (LW) plays an essential role in aquatic ecosystem health and function. Traditionally, LW has been removed from streams to minimize localized flooding and increase conveyance efficiency. More recently, LW is often added to streams as a component of stream and river restoration activities. While much research has focused on the role of LW in habitat provisioning, geomorphic stability, and hydraulics at low to medium flows, we know little about the role of LW during storm events. To address this question, we investigated the role of LW on floodplain connectivity along a headwater stream in the Mid-Atlantic region of the United States. Specifically, we conducted two artificial floods, one with and one without LW, and then utilized field measurements in conjunction with hydrodynamic modeling to quantify floodplain connectivity during the experimental floods and to characterize potential management variables for optimized restoration activities. Experimental observations show that the addition of LW increased maximum floodplain inundation extent by 34%, increased floodplain inundation depth by 33%, and decreased maximum thalweg velocity by 10%. Model results demonstrated that different placement of LW along the reach has the potential to increase floodplain flow by up to 40%, with highest flooding potential at cross sections with high longitudinal velocity and shallow depth. Additionally, model simulations show that the effects of LW on floodplain discharge decrease as storm recurrence interval increases, with no measurable impact at a recurrence interval of more than 25 years.en
dc.description.versionPublished versionen
dc.format.extentPages 134-142en
dc.format.mimetypeapplication/pdfen
dc.identifier.orcidScott, Durelle [0000-0002-5792-789X]en
dc.identifier.orcidHession, William [0000-0002-6323-3827]en
dc.identifier.orcidHester, Erich [0000-0002-7510-5136]en
dc.identifier.urihttp://hdl.handle.net/10919/86776en
dc.identifier.volume118en
dc.language.isoenen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject04 Earth Sciencesen
dc.subject05 Environmental Sciencesen
dc.subject09 Engineeringen
dc.subjectEnvironmental Engineeringen
dc.titleEffects of Large Wood on Floodplain Connectivity in a Headwater Mid-Atlantic Streamen
dc.title.serialEcological Engineeringen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
pubs.organisational-group/Virginia Tech/Engineeringen
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Engineering/Civil & Environmental Engineeringen
pubs.organisational-group/Virginia Tech/Engineering/COE T&R Facultyen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciences/Fralin Affiliated Facultyen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciencesen
pubs.organisational-group/Virginia Tech/University Research Institutesen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciencesen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/Biological Systems Engineeringen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/CALS T&R Facultyen

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