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 stereo models from the 2009 Virginia State imagery. Subsequent to that an update capture was completed in 2022 using stereo models from the 2017 Virginia State imagery. The most recent planimetric update was completed in 2024 using orthoimagery from the 2023 and 2022 Eagleview Orthophotos. This contains outlines and centerlines for streams, rivers, lakes, ponds, swamps, paved ditches, and dams.Contact: Fairfax County Department of Information Technology GIS DivisionData Accessibility: Publicly AvailableUpdate Frequency: As NeededLast Revision Date: 3/1/2024Creation Date: 1/1/1997Feature Dataset Name: GISMGR.PLANIMETRICLayer Name: GISMGR.HYDRO_EDGES

Zipcode areas in Fairfax County, Virginia, USA as retrieved from this Fairfax County GIS website on 15 March 2011. Per communication with office staff data on that page is in the public domain.

This layer contains polygons that show the public rights of way. Right of way is defined as area or path that is accessible for people to pass through. Right of ways are normally found where roadways exist to allow for the public to travel. Right of way is the land that is not part of a parcel or common area in the GIS data.Contact: Fairfax County Department of Information Technology GIS DivisionData Accessibility: Publicly AvailableUpdate Frequency: DailyLast Revision Date: 1/1/2000Creation Date: 1/1/2000Feature Dataset Name: GISMGR.PARCELSLayer Name: GISMGR.RIGHTSOFWAY

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 land use and development. All of Fairfax County drains into the Potomac River and ultimately the Chesapeake Bay. In an effort to protect and improve the quality of these waterways, sensitive areas along streams throughout Fairfax County have been designated as Resource Protection Areas.State regulations require that Resource Protection Areas (RPAs) be designated around all water bodies with perennial flow. Perennial flow means that water always flows in the stream or other water body except during periods of drought. The Department of Public Works and Environmental Services conducted field studies to identify all perennial streams throughout the county and used this information to prepare a set of maps showing the location of RPAs as defined under the revised Ordinance. The maps were adopted by the Board on November 17, 2003. The data include the boundaries of the RPAs adopted by the Board in 1993 and the additional RPAs adopted by the Board in 2003. These are general locations of RPA boundaries for planning purposes and the actual limits may be further refined by detailed field studies conducted at the time a plan is submitted to obtain a permit to develop a property.Any areas within Fairfax County not contained within the RPAs are Resource Management Areas (RMAs). Together, the RPAs and RMAs comprise the Chesapeake Bay Preservation Areas.

Street centerlines in Fairfax County, Virginia, USA as retrieved from the Fairfax County GIS website on 15 March 2011. Vintage is 14 April 2008. Per communication with office staff, data on that page is in the public domain.

This layer contains data defining the exterior boundaries of land under common ownership, typically within condominium properties within Fairfax County, Virginia. The common area layer was created to depict these areas of land that do not actually have parcel identification numbers. These areas of land are owned by a group of properties that lie within the common area. Information portrayed on this layer was initially derived from the ink-on-mylar property maps maintained by the County since the early 1960s. Contact: Fairfax County Department of Information Technology GIS DivisionData Accessibility: Publicly AvailableUpdate Frequency: DailyLast Revision Date: 1/1/2000Creation Date: 1/1/2000Feature Dataset Name: GISMGR.PARCELSLayer Name: GISMGR.COMMON_AREAS

Locations of all authoritative site addresses for Fairfax County. These addresses reside and are maintained in the Fairfax Master Address Repository (MAR) which is housed in the enterprise GIS database. This data contains not only the address, including street name, unit numbers for condominiums, city, state, and zip, but also several other related attributes such as jurisdiction and subdivision name that the address resides. This layer is updated daily from the data maintained in the MAR layer and related tables. Updates to this data occur when address data is recorded or approved and authorized by Land Development Service, Facilitation and Address Center (LDS-FAC).Important information about unit numbers. This data is based on ownership and address site location. Therefore, addresses for apartment buildings will just have the primary building address. They will not include the unit numbers as there is no requirement for submission of unit numbers for apartment buildings in the county. Addresses for condominiums will have the primary address as well as the unit number as these are recorded with the Act of Condominium documents and each unit has separate ownership.Contact: Fairfax County Department of Information Technology GIS DivisionData Accessibility: Publicly AvailableUpdate Frequency: DailyLast Revision Date: 4/15/2023Creation Date: 3/1/2004Layer Name: GISMGR.ADDRESSES

Hydro polygons in Fairfax County, Virginia, USA as retrieved from the Fairfax County GIS website on 15 March 2011. Data was exported on 14 April 2008. Per communication with office staff, data on that page is in the public domain.

This layer contains data defining the exterior boundaries of subdivided land within Fairfax County, Virginia. The Subdivision layer was created to depict subdivided land areas defined by recorded documents (plats) for the County of Fairfax. The polygons portrayed on this layer define the second portion of the County's Parcel Identification Numbering system (Map / Subdivision / Block / Parcel). Information portrayed on this layer was initially derived from the ink-on-mylar property maps maintained by the County since the early 1960s.For more information go to the Geospatial Property Data Guide.Contact: Fairfax County Department of Information Technology GIS DivisionData Accessibility: Publicly AvailableUpdate Frequency: DailyLast Revision Date: 1/1/2000Creation Date: 1/1/2000Feature Dataset Name: GISMGR.PARCELSLayer Name: GISMGR.SUBDIVISIONS

This layer contains the boundaries of special tax areas as defined by the taxing authority of Fairfax County. These are special tax districts where additional fees are levied on the properties within the districts. For current tax rates on properties for each of the tax areas refer to this page: https://www.fairfaxcounty.gov/taxes/real-estate/tax-rates Contact: Fairfax County Department of Information Technology GIS DivisionData Accessibility: Publicly AvailableUpdate Frequency: DailyLast Revision Date: 1/1/2000Creation Date: 1/1/2000Feature Dataset Name: GISMGR.PARCELSLayer Name: GISMGR.SPECIAL_TAX_AREAS

Roadway centerlines for all of Fairfax County, Fairfax City, City of Falls Church, City of Alexandria, and Arlington County. It also contains centerlines for a 1-3 mile buffer into Loudoun County and Prince William County.

Watersheds within Fairfax County. There are 30 watersheds delineated across Fairfax County.

Existing land use categories for current land uses in Fairfax County as of the VALID_TO date in the attribute table. For methodology and a data dictionary please visit: https://www.fairfaxcounty.gov/demogrph/opendata/ipls-methodology-data-dictionary.pdf

Hydro lines (arcs) in Fairfax County, Virginia, USA as retrieved from the Fairfax County GIS website on 15 March 2011. Data was exported on 14 April 2008. Per communication with office staff, data on that page is in the public domain.

This layer was created by combining the following 2017 planimetric features into a single, countywide layer: major transportation, minor transportation, sidewalk centerlines buffered based on width attribute, buildings and paved recreational features such as tennis courts and basketball courts, tracks, pathways, airport runways/taxiways. All features were digitized or verified from 2017 aerial photography. Note: the number and types of features captured in 2017 differ significantly from the last capture in 2009. Care should be taken when comparing the data from these two dates. Please use aerial photography to confirm changes. Historical 2009 impervious surface data can be downloaded here. Contact: Fairfax County GIS Division Data Accessibility: Publicly available Update frequency: As needed Creation date: 2/24/2022Layer name: GISMGR.COUNTY_IMPERVIOUS_2017