Title :
Extraction of watershed characteristics of Red River based on SRTM DEM
Author :
Xiaoqing, Zuo ; Xuequn, Wu ; Jie, Yu
Author_Institution :
Fac. of Land Resource Eng., Kunming Univ. of Sci. & Technol., Kunming, China
Abstract :
Based on SRTM DEM data, Arc Hydro Tools of ArcGIS is firstly employed with Red River as an example in this paper. On the basis of D8 algorithm, the authors then confirm flow direction of raster units according to the steepest gradient as well as starting-point and end-point of river section by means of threshold catchments area. Next, searching for upstream water-supply district of each river section from sub-watershed exit, the boundaries of whole watershed and each sub-watershed are obtained, which will finish characteristics extracting and generate digital Red River watershed. Eventually, experiment result of watershed is analyzed.
Keywords :
digital elevation models; rivers; Arc Hydro Tools; ArcGIS; D8 algorithm; SRTM DEM data; digital Red River watershed; raster units; river network; river section; threshold catchments area; Character generation; Data engineering; Data mining; Image resolution; Land surface; Radar imaging; Rivers; Space missions; Spaceborne radar; Surface topography; SRTM DEM; characteristic extracting; river network; watershed characteristics;
Conference_Titel :
Computer and Automation Engineering (ICCAE), 2010 The 2nd International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-5585-0
Electronic_ISBN :
978-1-4244-5586-7
DOI :
10.1109/ICCAE.2010.5451660
