&output=json|csv|html

output defaults to json

&categories=list

categories defaults to:

+legend,+mapunit,+component,+horizon,+textureclass,+parentmaterial,+restrictions,-sacatalog,-pores,-structure,-canopycover,-cropyield,-monthlystats

Use plus (+) to include a category and minus (-) to exclude it. The order doesn't matter, and commas are optional.

The API will return all the plus (+) defaults unless they are explicitly excluded.

You can also clear all defaults by including the word clear in the list. This is especially useful if you're interested in a single category, for example:

categories=clear,+structure

See the Data Dictionary below for what is included in each category.

&filter=filter

A comma-separate list of filters based on Column Name.

Example: &filter=hzname='A',comppct_r>20,month='August'

&mukey=mukey1[,mukey2,…]

A comma-separated list of mukeys. (You can use mukeys in place of lat/lon.)

Example: &mukey=2455277,289215,161545

&polygon=lon lat, lon lat, lon lat[,lon lat,…]

A comma-separated list of longitudes and latitudes. (You can use polygon in place of lat/lon.)

Example: &polygon=-76.8301 38.9651,-76.8304 38.9653,-76.8308 38.9656,-76.8311 38.9656,-76.8301 38.9651

Note: If the polygon isn't closed, the API will close it for you.

&component=major

Output major component only.

&component=max

Output maximum component only.