Geospatial data about Warren County, Virginia Roads. Export to CAD, GIS, PDF, CSV and access via API.

Contours for the southern third of Stafford County. See map below to see coverage area.Contour MetadataIdentification_Information: Citation: Citation_Information: Originator: Virginia Geographic Information Network (VGIN) Publication_Date: 200702 Title: 2 and 4 Foot Contours (VA State Plane North) Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: http://www.vgin.virginia.gov Description: Abstract: The 2 and 4 foot contours were produced as part of the 2006 and 2007 orthophotography update cycle of the Virginia Geographic Information Network's (VGIN) Virginia Base Mapping Program (VBMP). Contours were provided to jurisdictions who chose to use the upgrade option for contour generation. The contours are provided in Personal Geodatabase format. Due to size limitations, a jurisdiction may contain more than one geodatabase. Purpose: The aerial photography and creation of the subsequent contour data was executed to capture the existing ground conditions at a specific point in time for the purpose of GIS analysis. VGIN sub-contracted with the Sanborn Map Company to execute a Statewide mapping contract in the years 2006 and 2007. This contract updated and enhanced the existing 2002 map data. The Virginia Geographic Information Network (VGIN) is the lead public agency in the Commonwealth for spatial data and GIS. VGIN's mission is to facilitate the cost-effective development and use of spatial data, GIS, and related technologies in organizations throughout the Commonwealth. Supplemental_Information: The following localities chose to upgrade to contours with the flights taking place in 2006: Alexandria, Culpeper, Fredericksburg, Harrisonburg, King George, Loudoun (Purcellville Town), Manassas, Manassas Park, Orange, Prince William, Stafford, and Waynesboro. The following localities chose to upgrade to contours with the flights taking place in 2007: Augusta, Clarke, Fairfax City, Orange, Page, Spotsylvania, and Warren. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200602 Ending_Date: 200704 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.837830 East_Bounding_Coordinate: -75.160162 North_Bounding_Coordinate: 39.471482 South_Bounding_Coordinate: 36.464993 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: contours Place: Place_Keyword_Thesaurus: None Place_Keyword: Alexandria Place_Keyword: Culpeper Place_Keyword: Fredericksburg Place_Keyword: Harrisonburg Place_Keyword: King George Place_Keyword: Loudoun Place_Keyword: Purcellville Place_Keyword: Manassas Place_Keyword: Manassas Park Place_Keyword: Orange Place_Keyword: Prince William Place_Keyword: Stafford Place_Keyword: Waynesboro Place_Keyword: Augusta Place_Keyword: Clarke Place_Keyword: Fairfax City Place_Keyword: Orange Place_Keyword: Page Place_Keyword: Spotsylvania Place_Keyword: Warren Access_Constraints: Contact VGIN for information about regional and statewide VBMP datasets. For information about local datasets, contact the appropriate locality. Use_Constraints: Any person not licensed as a land surveyor preparing documentation pursuant to subsection C of 54.1-402 of the Code of Virginia shall note the following on such documentation: "Any determination of topography or contours, or any depiction of physical improvements, property lines or boundaries is for general information only and shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination." This VBMP data has been developed using procedures designed to produce data to National Standard for Spatial Data Accuracy (NSSDA) and is intended for use at 1" = 100' or 1" = 200' scale. It is requested that the Commonwealth of Virginia be cited for any use of the orthophotography as follows: "Imagery Courtesy of the Commonwealth of Virginia". Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Stuart Blankenship Contact_Organization: Virginia Geographic Information Network (VGIN) Contact_Position: Geospatial Project Manager Contact_Address: Address_Type: mailing and physical address Address: 11751 Meadowville Lane City: Chester State_or_Province: VA Postal_Code: 23836 Country: USA Contact_Voice_Telephone: (804) 416-6208 Contact_Facsimile_Telephone: (804) 416-6353 Contact_Electronic_Mail_Address: stuart.blankenship@vita.virginia.gov Hours_of_Service: 8:00 AM - 5:00 PM Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.1.1332Data_Quality_Information: Logical_Consistency_Report: Breaklines captured along water features are topologically structured and hydrologically corrected for positive high-to-low stream flow. All hydrological features such as streams, ponds, lakes, river banks, dams, and associated structures are also topologically corrected and structured. Completeness_Report: The initial base topo DTM was further densified for the creation of contours that will meet both NSSDA vertical accuracy specifications and FEMA contours specifications. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: VGIN Publication_Date: 200702 Title: 100 Scale Digital Terrain Models Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: http://gisdata.virginia.gov Source_Scale_Denominator: 1200 Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200602 Ending_Date: 200704 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: VBMP 100 Scale DTM Source_Contribution: Digital terrain models Source_Information: Source_Citation: Citation_Information: Originator: VGIN Publication_Date: 200702 Title: 200 Scale Digital Terrain Models Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: http://gisdata.virginia.gov Source_Scale_Denominator: 2400 Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200602 Ending_Date: 200704 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: VBMP 200 Scale DTM Source_Contribution: Digital Terrain Models Process_Step: Process_Description: The analog aerial photography that was captured during the Spring of 2006/2007 was collected at 1"=600' scale for 2 foot contours and 1"=1200' for 4 foot contours. The aerial photography was controlled with strategic photo-identifiable ground control points. The ground control points were referenced to a Statewide adjusted Network in North American Datum 1983; Virginia State Plane North. The film was scanned at 14 microns and the aerotriangulation was executed using Zeiss ISAT software. The accuracy of the aerotriangulation data supports 1"=100' mapping and the generation of 2 foot contours or 1"=200' mapping and the generation of 4 foot contours. The Digital Terrain Model (DTM) and subsequent Triangular Irregular Network (TIN) used to the interpolate the contours was photogrammetrically stereo-compiled using fully manual methods to collect masspoints and breaklines. The initial base topo DTM was further densified for the creation of contours that will meet both NSSDA vertical accuracy specifications and FEMA contours specifications. The data was initially compiled in tile (2,500' X 2,500' or 5,000' X 5,000') format and seamlessly merged together into GeoDatabase format for final delivery. Source_Used_Citation_Abbreviation: VBMP 100 Scale DTM Source_Used_Citation_Abbreviation: VBMP 200 Scale DTM Process_Date: 200702Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 46020Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: State Plane Coordinate System State_Plane_Coordinate_System: SPCS_Zone_Identifier: 4501 Lambert_Conformal_Conic: Standard_Parallel: 38.033333 Standard_Parallel: 39.200000 Longitude_of_Central_Meridian: -78.500000 Latitude_of_Projection_Origin: 37.666667 False_Easting: 11482916.666667 False_Northing: 6561666.666667 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: survey feet Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.000100 Altitude_Distance_Units: feet Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinatesEntity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2 and 4 Foot Contours