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Perennial Streams
Perennial streams in Fairfax County. Perennial streams are bodies of water flowing in a natural or man-made channel year-round, except during periods of drought. -
Resource Protection Areas
The Chesapeake Bay Preservation Ordinance was adopted to protect our local streams and one of the world's most productive estuaries, the Chesapeake Bay, from pollution due to... -
County Impervious Surfaces 2017
This layer was created by combining the following 2017 planimetric features into a single, countywide layer: major transportation, minor transportation, sidewalk centerlines... -
Soil Properties - 2018
Table of properties of soil types. One to many relate with the Soils 2018 layer. -
Soils - 2011
This data set is a digital soil survey and generally is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The information was... -
Radon Potential Areas
Areas of radon potential within Fairfax County. These areas were developed by short-term test results from a study conducted by the Fairfax County Health Department during the... -
Marumsco Soils
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,... -
Non-Marine Clay Shrink-Swell Soils
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... -
Tree Cover - 1990
Dataset describes forest cover types in Fairfax County, as they pertain to gypsy moth management. Data was created in-house by the Fairfax County Urban Forest Management, Forest... -
Watersheds
Watersheds within Fairfax County. There are 30 watersheds delineated across Fairfax County. -
Potential Asbestos Containing Soils
Potential asbestos containing soils in Fairfax County. These soils are mapped over naturally asbestos-containing bedrock. Safety precautions must be taken during construction.... -
Tree Cover - 2015
This layer was extracted from the 2015 land cover raster and converted to polygons. The polygons represent areas of tree canopy derived from classification of Worldview-2... -
Tree Cover - 2011
This layer was extracted from the 2011 land cover raster and converted to polygons. The polygons represent areas of tree canopy derived from classification of Worldview-2... -
Soils - 2018
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... -
Previously Mapped Marine Clay
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... -
Soils - 1990
The soil classification areas from the 1990 soil survey for Fairfax County. Not all areas of Fairfax County were classified during this project so there are areas that do not... -
Tree Cover - 2002
Dataset describes forest cover types in Fairfax County, as they pertain to gypsy moth management. Data was created in-house by the Fairfax County Urban Forest Management, Forest... -
Environmentally Sensitive Areas
This polygon dataset is composed of subsets from Fairfax County’s current soil inventory, recorded floodplain, and Resource Protection Area (RPAs) layers. Layer subsets are...
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