1 Foot Countywide Color Spring 2014 Orthophotography

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Virginia Geographic Information Network (VGIN)

Publication_Date: 20131031

Title: GISRASTER.GRSTR.COLOR_2014

Edition: 2013

Geospatial_Data_Presentation_Form: remote-sensing image

Series_Information:

Series_Name: Virginia Base Map Program

Issue_Identification: 2013

Publication_Information:

Publication_Place: Richmond, Virginia

Publisher: Virginia Geographic Information Network (VGIN)

Online_Linkage: <http://www.vita.virginia.gov/isp/default.aspx?id=12118>

Larger_Work_Citation:

Citation_Information:

Originator: Virginia Geographic Information Network (VGIN)

Publication_Date: unknown

Title: Virginia Base Map Program

Description:

Abstract:

In the spring of 2014, the Commonwealth of Virginia, through the Virginia Geographic Information Network Division (herein referred to as VGIN) of the Virginia Information Technologies Agency (VITA) contracted with the Sanborn Map Company to provide aerial data acquisition, ground control, aerial triangulation and development of statewide DTM and digital orthophotography data. The Virginia Base Mapping Program (VBMP) update project is divided into two collection phases: the Eastern half was collected in Spring 2014 and the Western half will be collected in Spring 2015. Ortho products are 1-foot resolution statewide ortho-imagery with upgrades to 6-inch resolution tiles and 3-inch resolution tiles in various regions within the project area. All data acquired in 2014 is jurisdiction based and is in the eastern half of the state. The Virginia Base Mapping project encompasses the entire land area of the Commonwealth of Virginia over 4 years. The State boundary is buffered by 1000'. Coastal areas of the State bordering the Atlantic Ocean or the Chesapeake Bay are buffered by 1000' or the extent of man-made features extending from shore.

Purpose:

The collection of aerial photography, update of the DTM surface and production of orthophotography was executed to capture the existing ground conditions at a specific point in time for the purpose of GIS analysis. Orthophotography along with DTM data typically provides an accurate base for digitally representing geographic features upon which a GIS is built. The Virginia Geographic Information Network Division (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 entire State was initially designed to support 1-foot resolution statewide ortho-imagery at 1"= 200' (1:2400) scale mapping. Jurisdictions throughout the State were provided an option to upgrade to 6-inch resolution tiles and 3-inch resolution at 1"=100' (1:1200) map scale. All digital ortho-imagery and development processes for the VBMP shall conform to the ASPRS Draft Aerial Photography Standards (1995) and Model Virginia Map Accuracy Standards (1992), which generally follow the ASPRS Accuracy Standard for Large-Scale Mapping (1990) for all imagery at the scales indicated except for the changes specified in this document. Accuracy will be tested and reported according to NSSDA Geospatial Positioning Accuracy Standards Part 3: National Standard for Spatial Data Accuracy Class 1.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20140201

Beginning_Time: 020000

Ending_Date: 20140401

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Irregular

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -77.983601

East_Bounding_Coordinate: -77.308375

North_Bounding_Coordinate: 39.335910

South_Bounding_Coordinate: 38.836886

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: imagery

Theme_Keyword: orthophotography

Theme_Keyword: raster

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories

Theme_Keyword: imageryBaseMapsEarthCover

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Virginia

Place_Keyword: USA

Place_Keyword: Commonwealth of Virginia

Access_Constraints:

Contact VGIN for information about regional and statewide VBMP datasets. For information about local datasets, contact the appropriate locality.

Use_Constraints:

This VBMP data has been developed using procedures designed to produce data to comply with the Model Virginia Map Accuracy Standards (1992) and is intended for use at 1" = 100' or 1" = 200' scale. Pursuant to Section 54.1-402, paragraph C of the Code of Virginia, which is quoted below, this data may not be used for purposes listed in said paragraph C, since the data was not created, nor is it maintained under the supervision of a licensed land surveyor. C. Persons utilizing photogrammetric methods or similar remote sensing technology shall not be required to be licensed as a land surveyor pursuant to subsection B of § 54.1-404 or 54.1-406 to: (i) determine topography or contours, or to depict physical improvements, provided such maps or other documents shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination, or (ii) graphically show existing property lines and boundaries on maps or other documents provided such depicted property lines and boundaries shall only be used for general information. Any determination of topography or contours, or depiction of physical improvements, utilizing photogrammetric methods or similar remote sensing technology by persons not licensed as a land surveyor pursuant to § 54.1-406 shall not show any property monumentation or property metes and bounds, nor provide any measurement showing the relationship of any physical improvements to any property line or boundary. Any person not licensed pursuant to subsection B of § 54.1-404 or 54.1-406 preparing documentation pursuant to subsection C of § 54.1-402 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. 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_Organization_Primary:

Contact_Organization: VGIN

Contact_Person: Wendy Stout

Contact_Position: VBMP Project Manager

Contact_Address:

Address_Type: mailing and physical

Address: 11751 Meadowville Lane

City: Chester

State_or_Province: VA

Postal_Code: 23836

Contact_Voice_Telephone: 804-416-6209

Contact_Electronic_Mail_Address: wendy.stout@vita.virginia.gov

Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.2.2.3552

Data_Quality_Information:

Logical_Consistency_Report:

All image tiles have been checked for proper spatial reference and conformance to the revised quality acceptance criteria adopted in the Commonwealth of Virginia Digital Orthoimagery and Digital Terrain Model Production Services Contract (Contract# VA-081223-SANB)

Completeness_Report:

This dataset includes a total of approximately 5,067 total images in the Virginia North State Plane Zone for 1' = 200' scale imagery. Complete coverage is provided for all project areas unless an area is covered by imagery at the 1' = 100" scale. Approximately 600 tiles were caputured due to leaf-on conditions, and will be produced in the 2014 flying season.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

These data were complied to meet the Commonwealth of Virginia Standard for Class 1 Map Accuracy as of November 1, 2013. For the 1"=200' scale: RMSEx <= 2.0 feet, RMSEy <= 2.0 feet, RMSEr <= 2.83 feet, Accuracy r <= 4.90 ft at the 95% confidence level. For the 1"=100' scale: RMSEx <= 1.0 feet, RMSEy <= 1.0 feet, RMSEr <= 1.42 feet, Accuracy r <= 2.45 ft at the 95% confidence level.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid Cell

Row_Count: 5000

Column_Count: 5000

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 HARN StatePlane Virginia North FIPS 4501 Feet

Lambert_Conformal_Conic:

Standard_Parallel: 38.03333333333333

Standard_Parallel: 39.2

Longitude_of_Central_Meridian: -78.5

Latitude_of_Projection_Origin: 37.66666666666666

False_Easting: 11482916.66666666

False_Northing: 6561666.666666666

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.00000002708842039567117

Ordinate_Resolution: 0.00000002708842039567117

Planar_Distance_Units: foot_us

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983 HARN

Ellipsoid_Name: GRS 1980

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Reflectance values for visible and near infra-red light caputured by the Z/I Imaging Digital Mapping Camera (DMC) and expressed as four-band orthorectified imagery.

Entity_and_Attribute_Detail_Citation:

Detailed specifications and acceptance criteria can be found in the Commonwealth of Virginia Digital Orthoimagery and Digital Terrain Model Production Serviices Contract (Contract# VVA-121207-SANB)

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Virginia Geographic Information Network

Contact_Person: VGIN Coordinator

Contact_Position: VGIN Coordinator

Contact_Address:

Address_Type: mailing and physical

Address: 11751 Meadowville Lane

City: Chester

State_or_Province: VA

Postal_Code: 23836

Contact_Voice_Telephone: 804-416-6198

Contact_Electronic_Mail_Address: vbmp@vgin.virginia.gov

Distribution_Liability:

ALL DATA IS PROVIDED "AS IS." The Commonwealth of Virginia, the Virginia Geographic Information Network and their respective, officers, agents and employees jointly and severally disclaim any and all representations or warranties, express or implied, written or oral, in fact or arising by operation of law, including any warranties of merchantability, fitness for a particular purpose, ACCURACY, CURRENCY, commercial value, or freedom of data from infringement of any THIRD PARTY intellectual property rights. Pursuant to Section 54.1-402, paragraph C of the Code of Virginia, which is quoted below, this data may not be used for purposes listed in said paragraph C, since the data was not created, nor is it maintained under the supervision of a licensed land surveyor. C. Persons utilizing photogrammetric methods or similar remote sensing technology shall not be required to be licensed as a land surveyor pursuant to subsection B of § 54.1-404 or 54.1-406 to: (i) determine topography or contours, or to depict physical improvements, provided such maps or other documents shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination, or (ii) graphically show existing property lines and boundaries on maps or other documents provided such depicted property lines and boundaries shall only be used for general information. Any determination of topography or contours, or depiction of physical improvements, utilizing photogrammetric methods or similar remote sensing technology by persons not licensed as a land surveyor pursuant to § 54.1-406 shall not show any property monumentation or property metes and bounds, nor provide any measurement showing the relationship of any physical improvements to any property line or boundary. Any person not licensed pursuant to subsection B of § 54.1-404 or 54.1-406 preparing documentation pursuant to subsection C of § 54.1-402 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.”

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: TIFF

File_Decompression_Technique: no compression applied

Fees: variable

Metadata_Reference_Information:

Metadata_Date: 20140827

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Virginia Geographic Information Network

Contact_Person: Wendy Stout

Contact_Position: VBMP Project Manager

Contact_Address:

Address_Type: mailing and physical

Address: 11751 Meadowville Lane

City: Chester

State_or_Province: VA

Postal_Code: 23836

Contact_Voice_Telephone: 804-416-6209

Contact_Electronic_Mail_Address: wendy.stout@vita.virginia.gov

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time