Based on a previous question, Can I download the entire NRCS SSURGO database?, it appears that it is difficult to import the entire USDA SSURGO database.
The Web Soil Survey provides the ability to draw a polygon and then download data. But the polygon has to be fairly small, and there is a lot of pointing, clicking, and waiting to get the desired data. There is also a Geospatial data gateway where it is possible download county-level data.
However, these do not meet my needs. This is what I want to do:
- I start with the lat/lon coordinates of the corners of a rectangle
- find the area of each soil type in the rectangle
- find % clay, sand, silt, organic matter as a function of depth for each soil type
Is there a way that I can do this programatically?
(Solutions in R preferred, but any open-source solution will be useful)