Greenwich Series - Delaware State Soil. A state soil is represented by a soil series that has special significance to a particular state. Each state in the United States has selected a state soil, many of which have been legislatively established. These "Official State Soils" share the same level of distinction as official state flowers and birds.
NRCS Soils (National) – links to soil survey data, maps, guidelines, handbooks, official series descriptions, National Soil Survey Center, and more....