Tag Archives: GIS

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Using SSURGO to define subsurface hydrologic conditions

I’ve known about the USGS’ SSURGO database for awhile. Back when I was practicing as a civil engineer, we mostly used it to define drainage groups of soil. I did a few land development suitability analyses for some conceptual projects with it too, but nothing too intense. For my current project, I needed to use it to define the subsurface conditions of an urban hydrological model. Here I present how to extract more detailed information from the SSURGO database.