Help with Creating a Soils Layer

[Austin Gaydos]

Hello!

I am attempting to create a soils layer for the first time, with the goal of creating an infiltration layer. I have been following the HECRAS guide to do this, found at https://www.hec.usace.army.mil/confluence/rasdocs/r2dum/latest/developing-a-terrain-model-and-geospatial-layers/creating-a-soils-data-layer, and have been unsuccessful at attemping to import the soils data via shapefile and via GSSURGO for differing reasons.

I followed the steps exactly, downloading the “spatial” and “tabular” data for NH609 via the web soil survey. When I try to import the data via the GSSURGO method I get an error of “Could not load GSSURGO data: SELECT from table chtexturegrp failed, no such feature or class”. When I import the shapefile I have no option for the hydrologic soil group that would be used for the SCS Curve Number Method. I have been trying to find the soil groups in the files I downloaded and match them to the map unit symbols, but I have been unable to figure that out at all. Any guidance, for either method, would be appreciated!

Thank you

[alister.hood]

What version of HEC-RAS?
Do you think this could be the “Soils Layer not Recognized” known issue listed here? https://www.hec.usace.army.mil/confluence/rasdocs/raski/latest/

[Austin Gaydos]

I am using version 6.4.1.
The issue is not the my layer isn’t recognized, I simply cannot get the layer to be created. I was following the instructions on the website, but I could not import a geodatabase without error and then when I tried the shape file method I received another error about indexes. It also did not like that my HSG names had slashes in them, despite the example on the website showing slashes for the classifications.

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