topic GeoRas- HEC-Ras problems in Water Resources Questions https://community.esri.com/t5/water-resources-questions/georas-hec-ras-problems/m-p/740270#M3793 <HTML><HEAD></HEAD><BODY><P>Hi everyone, </P><P></P><P>I'm working on a project that involves the calculation of the 50 year flood height so what I am trying to do is create the geometry data in GEO-RAS and export it to HEC-RAS to run the model with the flow I got for that return period. I also got the mean flow. The problem I am having is when I export the data in HEC-RAS everything seems to be right but when I compute the plan the results for the WS Elev doesn't make any sense. I also notice that sometimes HEC-RAS deforms my cross sections not the shape but the length and altitude. It's really weird because if I put a really low flow the floodplain is completely full. Someone could shed light on this? what am I missing? I would much appreciate any help, it's driving me crazy. Attached is the profile of my river with a flow of 18.4 m3/s if it helps.</P><P></P><P>Many thanks in advance. </P><P></P><P>Laura Lozano</P></BODY></HTML> Fri, 17 Apr 2015 10:34:56 GMT LauraLozano_de_sosa 2015-04-17T10:34:56Z GeoRas- HEC-Ras problems https://community.esri.com/t5/water-resources-questions/georas-hec-ras-problems/m-p/740270#M3793 <HTML><HEAD></HEAD><BODY><P>Hi everyone, </P><P></P><P>I'm working on a project that involves the calculation of the 50 year flood height so what I am trying to do is create the geometry data in GEO-RAS and export it to HEC-RAS to run the model with the flow I got for that return period. I also got the mean flow. The problem I am having is when I export the data in HEC-RAS everything seems to be right but when I compute the plan the results for the WS Elev doesn't make any sense. I also notice that sometimes HEC-RAS deforms my cross sections not the shape but the length and altitude. It's really weird because if I put a really low flow the floodplain is completely full. Someone could shed light on this? what am I missing? I would much appreciate any help, it's driving me crazy. Attached is the profile of my river with a flow of 18.4 m3/s if it helps.</P><P></P><P>Many thanks in advance. </P><P></P><P>Laura Lozano</P></BODY></HTML> Fri, 17 Apr 2015 10:34:56 GMT https://community.esri.com/t5/water-resources-questions/georas-hec-ras-problems/m-p/740270#M3793 LauraLozano_de_sosa 2015-04-17T10:34:56Z