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A comparison of channel erosion in small urban and rural catchments, Armidale, New South Wales
Author(s) -
Neller R. J.
Publication year - 1988
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290130102
Subject(s) - channel (broadcasting) , erosion , bank erosion , hydrology (agriculture) , surface runoff , environmental science , drainage basin , geography , geology , geomorphology , geotechnical engineering , ecology , cartography , engineering , electrical engineering , biology
Five years after the cessation of housing construction in a small urban catchment in Armidale, New South Wales, the stability of the channel bed and banks was investigated with the use of erosion pins. After eighteen months of monitoring, the rate of channel bank erosion was found to be 3.6 times greater than that of a nearby rural channel and the rate of knickpoint retreat was 2.4 times greater. There was, however, no evidence to suggest that the urban channel was inherently unstable, but that the increased rate of erosion was the product of changed runoff conditions associated with urban development. Both channels are considered to be in a state of equilibrium.