A Catchment Conflation Tool for Comparing DEM Derived River Networks

TitleA Catchment Conflation Tool for Comparing DEM Derived River Networks
Publication TypeConference Paper
Year of Publication2011
AuthorsRead, A.  M.
Secondary AuthorsHengl, T., I.  S. Evans, J.  P. Wilson, and M. Gould
Conference NameGeomorphometry 2011
Conference LocationRedlands, CA
Abstract

This paper describes a tool for identifying topologically matched locations in vector stream networks extracted from different DEMs of the same catchment. The tool has applications in providing quantitative comparisons of stream network position and topological errors as well as providing a robust method for conflating stream networks to enable transfer of attribute information between networks. The tool is demonstrated using a case study in the upper Murrumbidgee River in Australia showing how matching stream links are identified and topological differences identified.

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