Why do certain counties soils layer not match the adjacent countys soils layer?
In the digital process there are many steps. One of the later steps in the digital soils data evolution is the joining between counties. If you notice on the Digital Status Map, there are counties highlighted in light blue. Typically, these counties have not yet be joined to surrounding data. SSURGO certification requires that there is an acceptable join between soil mapping units, an exact line for line join between soil delineations, and a common boundary. In order to accomplish this task a soil scientist must complete this join, and document any changes to the “Official” Soil Survey. Edgematching takes two weeks per county join on the average. If there are four counties joining one soils data set, it takes 2 months to complete the county join. We are working toward a seamless soils coverage, but everything does take some time.
