Hi MBoucher21, thanks for answering, I've a very large river and using Fill it's very visible (10-15 pixels). In my study i'm trying to calibrate srtm model using lidar (2x2) data in hec-ras. So, the problem is that the river bed of SRTM is not the real bed and it's too high compared the lidar and, with it, the level of stream. The Hydro tool can find the river and catchment area but I need to know how much put down the bed and how to do it. If it's possible!
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