I picked Geo Hec Ras up as soon as I found it was available. Had been l looking hard for a RiverCAD replacement and was thrilled to see this new software. Have been using it on a dam removal project and am very pleased with how intuitive the work flow is and how quickly I can get to a working model, especially getting sections, reach lengths and over bank station definition off of 3d entities. This software is a critical element to my 1D modeling workflow.