Rapid assessment of gully sidewall erosion rates in data-poor catchments: a case study in Australia
Article
| Article Title | Rapid assessment of gully sidewall erosion rates in data-poor catchments: a case study in Australia | 
|---|---|
| ERA Journal ID | 1803 | 
| Article Category | Article | 
| Authors | Whitford, J. A. (Author), Newham, L. T. H. (Author), Vigiak, O. (Author), Melland, A. R. (Author) and Roberts, A. M. (Author) | 
| Journal Title | Geomorphology | 
| Journal Citation | 118 (3/4), pp. 330-338 | 
| Number of Pages | 9 | 
| Year | 2010 | 
| Place of Publication | Amsterdam, Netherlands | 
| ISSN | 0169-555X | 
| 1872-695X | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.geomorph.2010.01.013 | 
| Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0169555X10000395# | 
| Abstract | Knowledge of erosion rates and sediment yields from gullies is critical for the effective prioritisation of management efforts aimed at reducing the impact of gully-derived sediments on water quality. This paper describes a rapid assessment method for estimating sidewall gully erosion rates for already established gully networks. It combines a conceptual-empirical model of the cycle of gully initiation and stabilisation with an easy-to-apply technique for assessing gully extent and dimensions. The method is illustrated using a case study of the Avon-Richardson Catchment of north-central Victoria, Australia. It is estimated that a total of 4.6×106tonnes of sediment have been generated in that catchment from gully erosion since the latest major phase of gullying in the mid 1800s. This is equivalent to 8.9tha-1y-1 if sediment generation was evenly distributed spatially and temporally across the 3300km2 catchment over 160years prior to 2010. Current rates of gully erosion are estimated to be 4700ty-1 (equivalent to 1.4tha-1y-1). The results are comparable with observed rates of sidewall erosion in the Avon-Richardson Catchment. Further testing is required to build confidence in its applicability to assess sediment yields and for assisting regional authorities to plan remediation efforts. | 
| Keywords | erosion rates; gully erosion model; rapid assessment; sediment generation | 
| ANZSRC Field of Research 2020 | 370704. Surface water hydrology | 
| 370509. Sedimentology | |
| 410601. Land capability and soil productivity | |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. | 
| Byline Affiliations | Department of Primary Industries, Victoria | 
| Australian National University | |
| Teagasc Agriculture and Food Development Authority, Ireland | |
| Institution of Origin | University of Southern Queensland | 
https://research.usq.edu.au/item/q2901/rapid-assessment-of-gully-sidewall-erosion-rates-in-data-poor-catchments-a-case-study-in-australia
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