Floodplain Mapping (HEC-RAS to CAD)
Floodplain Mapping (HEC-RAS to CAD)
(OP)
Hi all,
I am working on hydraulic modeling of a channel for CLOMR/LOMR project, HEC-RAS model and results look fine. Right now, I am working on mapping the 100 yr floodplain boundaries. I have done one in the recent past, where I look at the results table and draft the floodplain boundary at each cross section in CAD. This is very cumbersome and time consuming process.
My question, Is there a better and faster way? Does HEC RAS 5.0 has capability to export the results back into CAD and boom you have the floodplain boundaries with one mouse click?
I am sure there is probably a quicker way of doing this. I tried downloading HEC-GeoRAS but found out quickly that you need ArcGIS with ArcView, we only have ArcMap 10.2.2.
Bit more info: I have used AutoCAD Civil 3D to create a surface from the aerial topo, then I created sample line cross sections and exported to HEC-RAS. This saved me a lot of time. Now, I am trying to learn the most efficient way of showing the floodplain boundaries in CAD without spending a lot of time on drafting.
I really appreciate your time and responses.
I am working on hydraulic modeling of a channel for CLOMR/LOMR project, HEC-RAS model and results look fine. Right now, I am working on mapping the 100 yr floodplain boundaries. I have done one in the recent past, where I look at the results table and draft the floodplain boundary at each cross section in CAD. This is very cumbersome and time consuming process.
My question, Is there a better and faster way? Does HEC RAS 5.0 has capability to export the results back into CAD and boom you have the floodplain boundaries with one mouse click?
I am sure there is probably a quicker way of doing this. I tried downloading HEC-GeoRAS but found out quickly that you need ArcGIS with ArcView, we only have ArcMap 10.2.2.
Bit more info: I have used AutoCAD Civil 3D to create a surface from the aerial topo, then I created sample line cross sections and exported to HEC-RAS. This saved me a lot of time. Now, I am trying to learn the most efficient way of showing the floodplain boundaries in CAD without spending a lot of time on drafting.
I really appreciate your time and responses.





RE: Floodplain Mapping (HEC-RAS to CAD)
RE: Floodplain Mapping (HEC-RAS to CAD)
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Floodplain Mapping (HEC-RAS to CAD)
RE: Floodplain Mapping (HEC-RAS to CAD)
RE: Floodplain Mapping (HEC-RAS to CAD)
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Floodplain Mapping (HEC-RAS to CAD)
do you remember BOSS International RiverCAD now it RiverNet. This is for use in ACAD. Not sure of their cost, however. This is the only software that I was aware of that automated xsec export to HEC-2/RAS. INROADS has the capabilities if one is using Bentley MicroStation (We use this and GIS). I googled HEC RAS automated cross section and a boat load of items popped up. civilgeo was one that came up. maybe look into these.
RE: Floodplain Mapping (HEC-RAS to CAD)
beej67, I found this great link. This I think does not need Arc-GIS.
https://forums.autodesk.com/autodesk/attachments/a...
I hope RAS Mapper 5.0 can do the job what the guy was explaining in the above link. (Without downloading SAGA etc.). Anyone who has done this without GIS in the past or played in RAS 5.0 environment and created floodplain boundaries already without help from Arc-GIS, please respond.
Thanks.