![]() For simplicity, choose even tens or hundreds for your corner coordinates. Decide on the desired background view extents in model space (the Model tab).12 Benefit Indicators for Flood Regulation Services of Wetlands: A Modeling Approach. To model flood hazard, we overlaid flood depth profiles from the HEC-RAS model onto elevations in the watershed to determine where flooding occurred for each scenario, and how deep that flooding was. Where that post showed how to import a vector file, this one shows how to import an image (raster) file. This is a follow-up to How to put a background from AutoCAD into SWMMM or EPANET. ![]() ![]() To do it, you print to an image from AutoCAD, create a coordinate World File, and Add the Background Picture in HEC-RAS. You can use a background image from AutoCAD as a world coordinate background for HEC-RAS.
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