Headwater stream length dynamics across four physiographic provinces of the Appalachian Highlands

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dc.contributor.authorJensen, Carrie K.en
dc.contributor.authorMcGuire, Kevin J.en
dc.contributor.authorPrince, Philip S.en
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.contributor.departmentGeosciencesen
dc.contributor.departmentVirginia Water Resources Research Centeren
dc.date.accessioned2018-03-13T17:50:08Zen
dc.date.available2018-03-13T17:50:08Zen
dc.date.issued2017-09-15en
dc.description.abstractUnderstanding patterns of expansion, contraction, and disconnection of headwater stream length in diverse settings is invaluable for the effective management of water resources as well as for informing research in the hydrology, ecology, and biogeochemistry of temporary streams. More accurate mapping of the stream network and quantitative measures of flow duration in the vast headwater regions facilitate implementation of water quality regulation and other policies to protect waterways. We determined the length and connectivity of the wet stream and geomorphic channel network in three forested catchments (<75 ha) in each of four physiographic provinces of the Appalachian Highlands: the New England, Appalachian Plateau, Valley and Ridge, and Blue Ridge. We mapped wet stream length seven times at each catchment to characterize flow conditions between exceedance probabilities of <5% and >90% of the mean daily discharge. Stream network dynamics reflected geologic controls at both regional and local scales. Wet stream length was most variable at two Valley and Ridge catchments on a shale scarp slope and changed the least in the Blue Ridge. The density and source area of flow origins differed between the crystalline and sedimentary physiographic provinces, as the Appalachian Plateau and Valley and Ridge had fewer origins with much larger contributing areas than New England and the Blue Ridge. However, the length and surface connectivity of the wet stream depended on local lithology, geologic structure, and the distribution of surficial deposits such as boulders, glacially-derived material, and colluival debris or sediment valley fills. Several proxies indicate the magnitude of stream length dynamics, including bankfull channel width, network connectivity, the base flow index, and the ratio of geomorphic channel to wet stream length. Consideration of geologic characteristics at multiple spatial scales is imperative for future investigations of flow intermittency in headwaters.en
dc.description.versionPublished versionen
dc.format.extent3350 - 3363 (14) page(s)en
dc.identifier.doihttps://doi.org/10.1002/hyp.11259en
dc.identifier.eissn1099-1085en
dc.identifier.issn0885-6087en
dc.identifier.issue19en
dc.identifier.orcidMcGuire, Kevin J. [0000-0001-5751-3956]en
dc.identifier.urihttp://hdl.handle.net/10919/82489en
dc.identifier.volume31en
dc.languageEnglishen
dc.publisherWileyen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000408341800004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectWater Resourcesen
dc.subjectdrainage densityen
dc.subjectflow intermittencyen
dc.subjecttemporary streamsen
dc.subjectPERENNIAL FLOW INITIATIONen
dc.subjectNETWORK EXPANSIONen
dc.subjectDRAINAGE DENSITYen
dc.subjectWATER-QUALITYen
dc.subjectMASS-BALANCEen
dc.subjectCHANNELen
dc.subjectRIVERSen
dc.subjectCONTRACTIONen
dc.subjectMANAGEMENTen
dc.subjectSTATEen
dc.titleHeadwater stream length dynamics across four physiographic provinces of the Appalachian Highlandsen
dc.title.serialHydrological Processesen
dc.typeArticle - Refereeden
dc.type.otherArticleen
dc.type.otherJournalen
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Natural Resources & Environmenten
pubs.organisational-group/Virginia Tech/Natural Resources & Environment/CNRE T&R Facultyen
pubs.organisational-group/Virginia Tech/Natural Resources & Environment/Water Resources Research Centeren
pubs.organisational-group/Virginia Tech/University Research Institutesen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciencesen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciences/Fralin Affiliated Facultyen

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