How can I find the source of the map data layers displayed in Web Soil Survey?
To see all available information on a map data layer: • Zoom the map to a scale where the layer you are interested in is visible. • Open the Legend tab. • Right click the name of the layer to pop-up the context menu. • Click View Layer Descriptions. • All available information about the source of the data layer is displayed. In some cases, the source of the data layer is not known, and No descriptions available is displayed.