Dear all
I’m saying I am using Hec Ras 5.0.3. I write because I would have a problem creating a 2D flow area on a DTM downloaded from USGS. The DTM is a NED (with 3 m resolution). For the creation of the terrain I use the .img file present in the file rar wich I downloaded.
At the time of computing the 2D flow area it is said that there are no points, while I scroll the pointer on the ras mapper I have the quote values….
I hope you can help me as I should make a 2D so I absolutely need the 2D flow area. THANK YOU AT ALL