River Channel Change Following Dam Removal in an Ephemeral Stream

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dc.contributor.author Neave, M
dc.contributor.author Rayburg, SC
dc.contributor.author Swan, A
dc.date.accessioned 2010-05-28T09:46:08Z
dc.date.issued 2009-01
dc.identifier.citation Australian Geographer, 2009, 40 (2), pp. 235 - 246
dc.identifier.issn 0004-9182
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/8891
dc.description.abstract Dam removal is becoming increasingly common for both small and large structures and is motivated by both environmental (e.g. re-establishing longitudinal connectivity) and engineering (e.g. safety) issues. Fluvial systems respond to dam removal by adjusting their forms through various processes and at varying rates. While limited research has investigated these adjustment mechanisms in perennial systems, little is understood regarding these mechanisms in ephemeral systems. The aim of this study is to analyse the geomorphic responses of the ephemeral Bushrangers Creek, central western New South Wales, Australia, following the 2002 removal of a 15 m high dam. Comparisons of pre- and post-dam removal survey data indicate that there has been repeated base-level lowering upstream of the former dam site. Longitudinal profiles of the thalweg before and after dam removal show an average bed lowering of 0.5 m and reveal that a 90 m long channel with a slope in excess of two-times greater than the pre-dam removal channel has formed upstream of the former dam wall.
dc.publisher Routledge Journals, Taylor & Francis Ltd
dc.relation.isbasedon 10.1080/00049180902978165
dc.subject Knickpoint, channel incision, sediment erosion, base-level lowering, channel evolution, stream management, Geography
dc.subject Knickpoint; channel incision; sediment erosion; base-level lowering; channel evolution; stream management; Geography
dc.title River Channel Change Following Dam Removal in an Ephemeral Stream
dc.type Journal Article
dc.parent Australian Geographer
dc.journal.volume 2
dc.journal.volume 40
dc.journal.number 2 en_US
dc.publocation Abingdon, UK en_US
dc.identifier.startpage 235 en_US
dc.identifier.endpage 246 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0406 Physical Geography and Environmental Geoscience
dc.personcode 0000047980 en_US
dc.personcode 105490 en_US
dc.personcode 0000052845 en_US
dc.percentage 100 en_US
dc.classification.name Physical Geography and Environmental Geoscience en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity ISI:000266871000006 en_US
dc.location.activity ISI:000266871000006
dc.location.activity ISI:000266871000006
dc.location.activity ISI:000266871000006
dc.description.keywords Knickpoint; channel incision; sediment erosion; base-level lowering; channel evolution; stream management en_US
dc.description.keywords Knickpoint
dc.description.keywords Knickpoint
dc.description.keywords channel incision
dc.description.keywords channel incision
dc.description.keywords sediment erosion
dc.description.keywords sediment erosion
dc.description.keywords base-level lowering
dc.description.keywords base-level lowering
dc.description.keywords channel evolution
dc.description.keywords channel evolution
dc.description.keywords stream management
dc.description.keywords stream management
dc.description.keywords Knickpoint
dc.description.keywords channel incision
dc.description.keywords sediment erosion
dc.description.keywords base-level lowering
dc.description.keywords channel evolution
dc.description.keywords stream management
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Faculty of Science/School of the Environment


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