River analysis using SRTM data

Discussion created by michele88_it on Feb 24, 2014
Latest reply on Feb 25, 2014 by MBoucher21
Hi all, I've some problems about modelling a river using SRTM 90m data. For this river I've also a grid DTM generated using LIDAR+bathimetry, from SRTM using HEC-GeoRAS I've exported the geometry of channel but the lower point of the SRTM channel it's too high than the the other(LIDAR) over 5/6 meters. My question is, using Arc Hydro how can I extract the "real" river bed from SRTM?