Liu, Xiaoye and Zhang, Zhenyu (2010) Extracting drainage network from high resolution DEM in Toowoomba, Queensland. In: Queensland Surveying and Spatial Conference 2010 (QSSC 2010), 1-3 Sept 2010, Brisbane, Australia.
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Detailed delineation of drainage networks is the first step for many natural resource management studies. Compared with field survey and interpretation from aerial photographs or topographic maps, automation of drainage network extraction from DEMs is an efficient way and has received considerable attention. Toowoomba City is the principal activity centre for the Darling Downs, Queensland. The development of the Surat Energy and Resource Province will continue to drive population growth in Toowoomba, placing high pressure on water and other resources in the region. This study aims to extract drainage networks from a high resolution DEM to support the strategy for improving the management of the impacts of stormwater, flooding, bank stability,pollutants, water quality and creek health in Toowoomba City. Composition parameters of the drainage network including the numbers of streams and the stream lengths are derived from the high resolution DEM. Contributing area thresholds and their impacts on the extraction of drainage networks are also discussed.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||No evidence of copyright restrictions preventing deposit.|
|Uncontrolled Keywords:||digital elevation model; drainage network; stream order; Toowoomba; Condamine catchment; Murray Darling Basin|
|Depositing User:||Dr Xiaoye Liu|
|Date Deposited:||08 Mar 2011 00:47|
|Last Modified:||03 Jul 2013 00:28|
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