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Layer: Polling Places (0)


Name: Polling Places

Display Field: STREET_NAME

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Description: This data contains point features representing voting locations for precincts within Fairfax County. Some features are the voting locations for 2 precincts and are identified in the attributes by having a value in the secondary precinct identifier.

Copyright Text:

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Name: Polling Places
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Schema Last Edit Date: 8/3/2025 5:06:13 AM

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Layer: Voting Precincts (1)


Name: Voting Precincts

Display Field: PREC_NAME

Type: Feature Layer

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Description: This data contains polygon features representing the voting precincts within Fairfax County.

Copyright Text:

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Layer: Chesapeake Bay Preservation Areas (2)


Name: Chesapeake Bay Preservation Areas

Display Field: TYPE

Type: Feature Layer

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Description: This data contains polygon features representing the Chesapeake Bay preservation areas in Fairfax County. This set of data provides a delineation of Chesapeake Bay Preservation Areas (Resource Protection Areas and Resource Management Areas) as set forth in Section 118-1-7 of Chapter 118, Chesapeake Bay Preservation Ordinance, of the Code of the County of Fairfax, Virginia adopted by the Board of Supervisors on July 7, 2003 (effective November 18, 2003).

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ID: RPA 2003
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ID: RPA 2005
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ID: Resource Management Areas (RMAs)
Name: Resource Management Areas (RMAs)
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Name: Resource Management Areas (RMAs)
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Attributes:

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Layer: Watersheds (3)


Name: Watersheds

Display Field: NAME

Type: Feature Layer

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Description: This data contains polygon features representing the watersheds within Fairfax County. There are 30 watersheds delineated across Fairfax County.

Copyright Text:

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Layer: Landfills (4)


Name: Landfills

Display Field: PIN

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This data contains polygon features representing landfills in Fairfax County.

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Layer: Marumsco Soils (5)


Name: Marumsco Soils

Display Field: AREASYMBOL

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This data contains polygon features representing 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 problemaatic. In steep areas that contain clays known as "marine clays" slope stability can be a problem. In addition, structures constructed on clays found in this complex could suffer foundation distress if adequate precautions are not taken during design and construction.

Copyright Text:

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Schema Last Edit Date: 8/3/2025 5:06:17 AM

Data Last Edit Date: 8/3/2025 5:06:17 AM

Layer: Non-Marine Clay Shrink-Swell Soils (6)


Name: Non-Marine Clay Shrink-Swell Soils

Display Field: AREASYMBOL

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Description: This data contains polygon features representing 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.

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Layer: Potential Asbestos Containing Soils (7)


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Description: This data contains polygon features representing 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 this geology, also contain shrinking-swelling clays which can cause foundation distress.

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Layer: Previously Mapped Marine Clay (8)


Name: Previously Mapped Marine Clay

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Description: This data contains polygon features representing previously mapped marine clay soils inFairfax 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.

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Layer: Quarries (9)


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Layer: Radon Potential Areas (10)


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Description: This data contains polygon features representing 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 winters of 1986-87 and 1987-88. For more information go to http://www.fairfaxcounty.gov/hd/air/radon.htm

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Layer: Human Services Offices (11)


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Description: This data contains point features representing the human services offices within Fairfax County.“HS_Region” is the office for each human services region, “DFS_Area” is the offices for the Department of Family Services Areas; “CPS_Region” is offices for Child Protective Services and “PPS_Region” is offices for Protection and Preservation Services.

Copyright Text: Fairfax County GIS & Mapping Services Branch 12000 Government Center Pkwy Suite 117 Fairfax, VA 22035 703-324-2712

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Layer: Human Services Regions (12)


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Layer: Volunteer Group Areas (13)


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Copyright Text: Fairfax County GIS and Mapping Services, and Neighborhood and Community Services

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Layer: Police Stations (14)


Name: Police Stations

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Layer: Airports (15)


Name: Airports

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Layer: Bicycle Routes (16)


Name: Bicycle Routes

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Description: This layer identifies a network of both on and off-road routes to assist bicyclists in navigating Fairfax County. With more than 5,000 miles of roadway and 700 miles of trails, the map highlights the most desirable routes and major trails for recreational and commuter bicyclists as well as out of town visitors. And also contains bike lanes. Bike Fairfax ( www.fairfaxcounty.gov/fcdot/bike/bikemap/) is an interactive web map that displays these data.

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Layer: Metrorail (19)


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Description: This data set contains all Metrorail in Virginia. The data set was originaly obtained from the Metro Washington Council of Governments (MWCOG) GIS data clearinghouse and conflated to the Fairfax County railroad data set.

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Layer: Metrorail Stations (20)


Name: Metrorail Stations

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Description: This data set contains current Metrorail Stations in Fairfax County.

Copyright Text:

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Layer: Major Utility Lines (21)


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Description: This data contains linear features representing the approximate location of major utility lines (electric, gas, communication) that run across Fairfax County.

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Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field: GlobalID

Type ID Field: TYPE

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• NAME (type: esriFieldTypeString, alias: UTIL_NAME, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• TYPE (type: esriFieldTypeString, alias: UTIL_TYPE, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• GlobalID (type: esriFieldTypeGlobalID, alias: GlobalID, SQL Type: sqlTypeOther, length: 38, nullable: false, editable: false)
• CreationDate (type: esriFieldTypeDate, alias: CreationDate, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: false)
• Creator (type: esriFieldTypeString, alias: Creator, SQL Type: sqlTypeOther, length: 128, nullable: true, editable: false)
• EditDate (type: esriFieldTypeDate, alias: EditDate, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: false)
• Editor (type: esriFieldTypeString, alias: Editor, SQL Type: sqlTypeOther, length: 128, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

ID: electric
Name: electric
Domains:

Templates:

Name: electric
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• TYPE: electric

---

ID: gas
Name: gas
Domains:

Templates:

Name: gas
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• TYPE: gas

---

ID: telephone
Name: telephone
Domains:

Templates:

Name: telephone
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• TYPE: telephone

---


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 8/3/2025 5:06:23 AM

Schema Last Edit Date: 8/3/2025 5:06:23 AM

Data Last Edit Date: 8/3/2025 5:06:23 AM

Layer: Railroads (22)


Name: Railroads

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: This data contains linear features representing the railroad and metro lines in and around Fairfax County.

Copyright Text: The data set was created by Analytical Surveys Incorporated (ASI) and Landata under contract to Fairfax County. Quality control checks were performed by Engineering Systems Incorporated and Dewberry and Davis. Staff from the GIS branch were also used for quality control checking.

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 1000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 11786587.701
YMin: 6927829.573
XMax: 11899251.237
YMax: 7005004.72
Spatial Reference: 102746 (2283)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field: GlobalID

Type ID Field:

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• NAME (type: esriFieldTypeString, alias: RRNAME, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• TYPE (type: esriFieldTypeString, alias: RRTYPE, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• VISIBLE (type: esriFieldTypeString, alias: VISIBLE, SQL Type: sqlTypeOther, length: 1, nullable: true, editable: true)
• RRSYM (type: esriFieldTypeInteger, alias: RRSYM, SQL Type: sqlTypeOther, nullable: true, editable: true)
• DRAW_SYMBOL (type: esriFieldTypeInteger, alias: DRAW_SYMBOL, SQL Type: sqlTypeOther, nullable: true, editable: true)
• GlobalID (type: esriFieldTypeGlobalID, alias: GlobalID, SQL Type: sqlTypeOther, length: 38, nullable: false, editable: false)
• CreationDate (type: esriFieldTypeDate, alias: CreationDate, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: false)
• Creator (type: esriFieldTypeString, alias: Creator, SQL Type: sqlTypeOther, length: 128, nullable: true, editable: false)
• EditDate (type: esriFieldTypeDate, alias: EditDate, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: false)
• Editor (type: esriFieldTypeString, alias: Editor, SQL Type: sqlTypeOther, length: 128, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Railroads
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 8/3/2025 5:06:24 AM

Schema Last Edit Date: 8/3/2025 5:06:24 AM

Data Last Edit Date: 8/3/2025 5:06:24 AM