Hi; what is the différence and the best DEM data type among ASTER, SRTM and ALOS PALSAR for morphometric and flash flood studying in small watershed

i am preparing a project for the study of flash floods in small arid watershed. diferent type of dem data are freely available in the net. i would like to know what is the the best type of DEM...

19 March 2017 5,518 9 View