A design prototype by Datopian, not an official website
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
Potential asbestos containing soils in Fairfax County. These soils are mapped over naturally asbestos-containing bedrock. Safety precautions must be taken during construction. Orange soils, which overlie a majority of…
Updated Oct 8, 2026
Fairfax County
Non-marine clay shrink swell soils in Fairfax County. These are soils containing other shrinking-swelling clays that can lead to foundation distress if precautions are not taken during design and construction.
Updated Oct 8, 2026
Fairfax County
Quarries in Fairfax County.
Updated Oct 8, 2026
Fairfax County
Marumsco soils in Fairfax County. Marumsco soils are mapped in complexes with other soil types. The complexes are highly variable and consist of combinations of clays, silts, sands, and gravels. They may also be…
Updated Oct 8, 2026
Fairfax County
Landfill properties in Fairfax County.
Updated Oct 8, 2026
Fairfax County
Watersheds within Fairfax County. There are 30 watersheds delineated across Fairfax County.
Updated Oct 8, 2026
Fairfax County
Per Chapter 118 requirements, a countywide map of perennial streams and waterbodies to be used for regulatory purposes was developed through field surveys conducted in 2002-2003. For more information, please…
Updated Oct 8, 2026
Fairfax County
The map displays the general locations of RPA boundaries for planning purposes and the actual limits may be further refined by site-specific field studies conducted at the time a site-related plan is submitted to…
Updated Oct 8, 2026
Fairfax County
This dataset is a selection of known erosion and flooding problems throughout the County. The data is intended primarily to assist site plan preparers with establishing the existence of known erosion and flooding…
Updated Oct 8, 2026
Fairfax County
This dataset is a selection of known erosion and flooding problems throughout the County. The data is intended primarily to assist site plan preparers with establishing the existence of known erosion and flooding…
Updated Oct 8, 2026
Fairfax County
The Non-Department of Public Works and Environmental Services (DPWES) Dam Break Inundation Zones layer is maintained by Land Development Services (LDS). LDS will obtain the data from the Department of Emergency…
Updated Oct 8, 2026
Fairfax County
This data represents detailed tree canopy cover in Fairfax County, Virginia. The data was derived from the 2021 Land Cover raster dataset which used remote sensing technologies on aerial imagery from the National…
Updated Oct 8, 2026
Fairfax County
This data represents detailed tree canopy cover in Fairfax County, Virginia. The data was derived from the 2021 Land Cover raster dataset which used remote sensing technologies on aerial imagery from the National…
Updated Oct 8, 2026
Fairfax County
Hydrographic line features in and around Fairfax County. The original data in this layer was captured during the 1997 data conversion effort for Fairfax County. After that an update capture was completed in 2014 using…
Updated Oct 8, 2026
Fairfax County
Hydrographic polygons in and around Fairfax County. The original data in this layer was captured during the 1997 data conversion effort for Fairfax County. After that an update capture was completed in 2014 using stereo…
Updated Oct 8, 2026
Fairfax County
Navigating the USGS floodplain study reports to confirm WSELs and discharges: Navigate to the location in ArcMap/ArcGIS Pro where you are interested in discharges or Waster Surface Elevations (WSELs) At that location,…
Updated Oct 8, 2026
Fairfax County
This dataset represents the boundaries of Fairfax County Potential Wetlands Areas. Applicants for many plan types are required to certify that all required wetlands permits will be acquired before land disturbance…
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
Fairfax County
This data set is based upon the 2011 soil survey prepared by the US Department of Agriculture-Natural Resources Conservation Service. The 2011 soil survey was prepared to National Cooperative Soil Survey standards and…
Updated Oct 8, 2026
