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Once manually loaded it worked for me! Thanks! There aren't permissions issues with the destination? You've specified a valid location?īefore computing the steady flow analysis (7:20 in your tutorial) I went to file in the steady flow analysis dialog box and I had to either manually open a plan file or create a new one. I am sorry I have never run into that problem. I am having the same problem Simbarashe posted in their second comment. This comment has been removed by the author. In RAS Mapper When i try to compute/Update stored map its always showing me "map not created". I am failing to create a shapefile for the inundation boundary. Its always showing "Map not Created) and thus i am not able to create the inundation boundary shape file to export to civil 3D.
#CIVIL 3D TO HEC RAS UPDATE#
I am having a challenge when computing/ update stored map for the inundation boundary. Note that sometimes at river bends you need to extend cross sections / cut lines for mapping purposes. The method Aaron mentions is how ArcGIS / rasmapper typically calculates water surface boundaries. Thanks! Couldn't get c3d tif to load in rasmapper until I deleted the "set projection" in rasmapper. And that method probably produces better results than a weeded HEC-RAS shape. The new 0 elevation contour exactly matches where the water surface meets the terrain surface the inundation limits. extract the 0 elevation contour as a polyline from the composite surface create a composite surface, based on the terrain and water surfacesĤ. change the sampled section lines to be at the calculated water surface elevationsģ. Once you've done the HEC-RAS model, another way to show the inundation limits is to create a water surface using the section lines and compare it with the terrain:ġ. Use WeedFeatures multiple (around 10) times with only Close Point Removal, 3D distance checked and set to 5 to 10 times the original export DEM grid spacing. Use PEDIT Spline to smooth the plines or. This creates the inundation boundary including the shape files you need in Civil 3D, located somewhere under your HEC-RAS project folder in a group named Inundation*.*Ĭheck the box to change regions to polylines. Highlight Inundation Boundary line in Manage Results Maps. In HEC-RAS RAS Mapper, go to Tools, Manage Results Maps.Ĭhoose Inundation Boundary under Map Type. Make sure you have saved your Plan under the Steady Flow Analysis File menu. Use HEC-RAS Steady Flow Analysis, Compute button to calculate the water surface.
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But normal depth is usually better if you don't have known water surface elevations at the ends of your stream. Use critical depth for a quick and dirty start. Use HEC-RAS Steady Flow Data to add flow and reach boundary elevation conditions. Use HEC-RAS Geometric Data, Tables menu to set Manning Roughness for all cross sections. Accept to use the projection in the file. Start with a blank new Mapper.Ĭlick the + to add the Civil 3D Terrain Export file. Then use the GEOMAP command (you will have to sign in to Autodesk A360) to bring in a map at world coordinates and move your project into approximate place on that map.)Įxport to DEM from Civil 3D. (If nothing else, do this: Under Toolspace, Settings, right-click your drawing name and select Edit Drawing Settings, Units and Zone, Available coordinate systems, and pick the system that seems most appropriate to you. Talk to a GIS person or comment below if you need help with this. Make sure a geographic projection is set right.Be sure to choose GEOTIFF instead of DEM file type. Right-click the surface in Toolspace, Prospector.In Civil 3D, create a Geotiff Civil 3D Terrain Export file of the cross section surface. See this post to get stream geometry from Civil 3D to HEC-RAS. Map inundation limits in the RAS Mapper feature of HEC-RASĭon't hesitate to ask for additional info if you are stuck.
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