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Find a Commonwealth ResourceFairfax County
These areas were mapped as marine clays in previous surveys. Marine clays are high shrink-swell soils that can cause foundation distress. They are sometimes referred to as Potomac Clays or Deltaic Clays.
Updated Oct 8, 2026
Fairfax County
Table of properties of soil types. One to many relate with the Soils 2018 layer.
Updated Oct 8, 2026
Loudoun County
More Metadata Historic drainage is used in agricultural and farm plans, stormwater management, comprehensive planning, floodplain management, and facility planning to provide a better understanding of what previous…
Updated Oct 10, 2026
Loudoun County
More Metadata Abstract: The general soil association map outlines broad areas which have distinctive patterns in landscape and general geographic appearance. Each of the soil associations has a unique set of features…
Updated Oct 10, 2026
Loudoun County
More Metadata Abstract: The soil spot points, or map symbols layer is a subset of the soils map. Spot points are isolated areas within a symbol that are designated with a symbol because the extent is too small to…
Updated Oct 10, 2026
Hampton Roads PDC & Hampton Roads TPO
This layer was assembled from data from Esri's SSURGO Downloader in May 2018. Esri compiled the most popular fields from the many tables in the SSURGO data into one layer. Individual watersheds were downloaded, merged,…
Updated Oct 6, 2026
