Sanborn Map Co. February 2007 Reg_HAMP_tContours vector digital data withheld Reg_HAMP_tContours These 2' contours were produced as part of the VGIN mapping project executed in 2006 and 2007. 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. 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. A GIS is a system of computer software, hardware, and data that allows a user to manipulate, analyze, and present information that is tied to a spatial location. GIS technology is used in scientific investigations, resource management, development planning, and many other applications that require analysis of spatial data. 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. en The analog aerial photography was collected at 1"=600' scale and flown in Spring 2006. 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 South. 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' 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 data was initially compiled in tile (2,500' X 2,500') tile format and seamlessly merged together into GeoDatabase format for final delivery. March-April 2006 ground condition Complete Unknown -76.455564 -76.269696 37.123498 36.982901 12079999.999908 12133121.186973 3524999.999921 3574999.999987 0.000000 168.000000 contours Contact VGIN for information about regional and statewide VBMP datasets. For information about local datasets, contact the appropriate locality. 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' 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". ESRI ArcCatalog 9.2.6.1500 Feature Class Stu Blankenship VGIN (Virginia Geographic Information Network) (804) 786-8175 Dataset copied. withheld Metadata imported. withheld 20070212 Metadata imported. withheld 20070313 Metadata imported. withheld 20070327 Dataset copied. withheld 20100114 06544100 Dataset copied. withheld 20101208 21201200 Vector String 0 Simple Polyline FALSE 0 TRUE TRUE coordinate pair 0.000250 0.000250 survey feet Lambert Conformal Conic 36.766667 37.966667 -78.500000 36.333333 11482916.666667 3280833.333333 North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_Virginia_South_FIPS_4502_Feet 0.000100 Explicit elevation coordinate included with horizontal coordinates Reg_HAMP_tContours Feature Class 0 OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. GlobalID GlobalID 0 38 0 0 GLOBALID GlobalID 0 38 0 0 SHAPE Shape Geometry 4 0 0 Feature geometry. ESRI Coordinates defining the features. TYPE INDEX Every fifth contour line (10' intervals). INTERMEDIATE Contour lines at 2' intervals. INDEX_OBS Index contours obscured by areas of heavy shadow or vegetation - contours are approximated. INTER_DEP Intermediate contours obscured by areas of heavy shadow or vegetation - contours are approximated. ELEV SHAPE.LEN SHAPE.LEN Double 0 0 0 Downloadable Data 20090120 Project Manager mailing address
1935 Jamboree Dr. Suite 100
Colorado Springs Colorado 80920 USA 719-593-0093 Krysia Sapeta Sanborn Map Co. M-F 10:00 am EST - 7:00 pm EST FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile en http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile 20250909 07025400 FALSE 20090120 15365900 20090120 15365900 1.0 ISO 19139 Metadata Implementation Specification ESRI ArcCatalog 9.2.6.1500 Reg_HAMP_tContours 12079999.999908 12133121.186973 3574999.999987 3524999.999921 1 -76.455564 -76.269696 37.123498 36.982901 1 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 002 withheld Feature Class NAD_1983_StatePlane_Virginia_South_FIPS_4502_Feet 0 20090120