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Research Article| October 01, 1996 Morphology, hydrology, and evolution of the anastomosing Ovens and King Rivers, Victoria, Australia S. A. Schumm; S. A. Schumm 1Department of Earth Resources, Colorado State University, Fort Collins, Colorado 80523 Search for other works by this author on: GSW Google Scholar Wayne D. Erskine; Wayne D. Erskine 2School of Geography, University of New South Wales, Sydney, NSW 2052, Australia Search for other works by this author on: GSW Google Scholar John W. Tilleard John W. Tilleard 3ID&A Pty. Ltd., Sale, Victoria 3850, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information S. A. Schumm 1Department of Earth Resources, Colorado State University, Fort Collins, Colorado 80523 Wayne D. Erskine 2School of Geography, University of New South Wales, Sydney, NSW 2052, Australia John W. Tilleard 3ID&A Pty. Ltd., Sale, Victoria 3850, Australia Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1996) 108 (10): 1212–1224. https://doi.org/10.1130/0016-7606(1996)108<1212:MHAEOT>2.3.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation S. A. Schumm, Wayne D. Erskine, John W. Tilleard; Morphology, hydrology, and evolution of the anastomosing Ovens and King Rivers, Victoria, Australia. GSA Bulletin 1996;; 108 (10): 1212–1224. doi: https://doi.org/10.1130/0016-7606(1996)108<1212:MHAEOT>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Anastomosing channels form the characteristic stream pattern of the Riverine Plain of southeastern Australia. Investigations of the Ovens and King Rivers in northeastern Victoria show that the individual channels and reaches of channels vary markedly in channel morphology and age. Young channels have large bankfull flows, low sinuosity, large meander wavelength, steep gradients, and are unstable. They are incised channels that are rapidly eroding their bed and banks. Old channels, however, have small bankfull flows, high sinuosity, small meander wavelength, gentler gradients, and are relatively stable. The multiple channels develop by avulsion. As individual channels become older and more sinuous, they also become more hydraulically inefficient. Thus, increasing proportions of flood discharge are displaced overbank. This overbank flow concentrates in relatively straight flood-plain depressions, and it erodes a new channel, which develops by both up- and down-valley incision. Down-valley incision is initiated at outflow points and up-valley incision is initiated where the overbank flow rejoins the main channel. With time, both channel segments join to form a new anabranch of the anastomosing-channel system.Large anastomosing channel networks have been identified in ancient rocks by stratigraphers and sedimentologists. On the basis of studies of the anastomosing Ovens and King Rivers, it is very likely that these channel networks are composed of channels of different ages; hence, even at one stratigraphic level, not all of the anabranches functioned simultaneously. Nevertheless, as a result of anabranch incision, which intersects older channels at depth, a three-dimensional network of paleochannels can form that permits fluid flow throughout the network. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.