Web Soil Survey
What soil types are mapped on my property?
The official Web Soil Survey is published by USDA NRCS and applies to projects nationwide. Use the official link below to access the current version directly — requirements and forms can change, so confirm the current version with USDA NRCS before any submittal.
What is this resource?
Web Soil Survey is a soils / site feasibility published by USDA NRCS for United States. The authoritative, current version is always the one published on the official page linked above.
When is this used?
This resource is used in Nationwide (FEMA) development, permitting and engineering review processes. Whether it applies to a specific project depends on the current requirements published by USDA NRCS — confirm the current requirements with the applicable jurisdiction before any submittal.
What may be required?
Requirements are defined solely by USDA NRCS and are published on the official resource page — ALFA Engineering is not the issuing government agency. Engineering documents commonly prepared by ALFA for projects that use this resource include:
Related verified resources
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How do I check whether my property is in a FEMA flood zone?
Related FAQs
Is there a wetland on my site?
Use the National Wetlands Inventory only as a screening tool — it is not a jurisdictional wetland determination, a survey, or a geotechnical report.
ALFA can flag the constraint during feasibility and coordinate with environmental/USACE specialists if needed.
What does the city require for commercial civil plans?
Each city publishes its own checklist or manual listing the major engineering sheets required for civil plan submittal.
ALFA can prepare the civil site, grading, drainage, utility and supporting engineering package.
Do I need a grading or land-disturbance permit?
Check the official permit criteria — only the published threshold determines whether a grading or land-disturbance permit applies.
ALFA can prepare grading, drainage and erosion-control documents for the applicable permit.
Use WSS for preliminary soil screening only; ALFA can combine it with survey, geotechnical, drainage, and septic design information as needed.
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External government and agency resources are provided for convenience. Requirements, forms and URLs may change. Confirm current requirements with the applicable jurisdiction. ALFA Engineering is not the issuing government agency.