Soil Drainage Class by Address
Find USDA soil-survey drainage classifications for the mapped soil unit and components at a selected U.S. property location.
Is this the right location? Drag the pin if Census placed it imprecisely.
Drainage class is a survey classification
Classes such as well drained or poorly drained describe the frequency and duration of wet periods under soil-forming conditions. They are not a guarantee of current yard drainage or a substitute for site inspection.
The seven-class drainage spectrum
USDA classes range from excessively drained through very poorly drained. They describe natural soil wetness over time, not the condition of gutters, grading, storm drains, or recent construction.
Dominant and wettest can differ
A mixed map unit can contain a dominant well-drained component and a smaller wetter component. The focused result keeps both classifications visible.
Why a property can show multiple results
The address resolves to a point inside a USDA map-unit polygon. That unit may contain several soil components in reported proportions, and the selected square foot is not directly sampled. The lookup therefore displays component percentages, attributes, and uncertainty together.
Source and limitations
Results come from USDA NRCS Soil Data Access and SSURGO after location matching through the U.S. Census Geocoder. Use them for research and screening, not as a replacement for field sampling, engineering, permitting, wetland delineation, or a septic perc test. Read the full methodology and data-source notes.