U. S. Geological Survey, FISC St. Petersburg 20081027 Open File Report 2008-1326 FISC St. Petersburg U. S. Geological Survey Firstvector digital dataext_350_4122\\IGSAFPESWS126\H$\J_Brock\COLO\BE\LIDAR_be\be_e350_n4122\ext_350_4122.shp Represents the extent of usable Lidar data to a specific 2x2km tile. This shapefile was generated as an intermediate step to create a series of U. S. Geological Survey Lidar maps. The polygons represent specific regions of a 2x2km tile that have usable Lidar data. All areas not covered by polygons correspond to areas of No Data (-100) on the Lidar tile. This shapefile is particularly useful as an analysis mask within ARC Spatial Analyst. See the source Lidar GeoTIFF tile for more specific accuracy information. en 200504182005041920050420REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground. ground condition Complete None planned -76.690931-76.67856837.23264337.221735 350001.000000351077.0128174120809.5922854122001.000000 none Extent Colonial National Historical Park Virginia none Bare earth topography none Any use of these data signifies a user's agreement to comprehension and compliance of the U. S. Geological Survey Standard Disclaimer. Ensure all portions of metadata are read and clearly understood before using these data in order to protect both user and U. S. Geological Survey interests. See section 6.3 Distribution Liability. Although the U. S. Geological Survey is making these data sets available to others who may find the data of value, the U. S. Geological Survey does not warrant, endorse, or recommend the use of these data setse for any given purpose. The user assumes the entire risk related to the use of these data. These data sets are not for navigational purposes. The U. S. Geological Survey is providing these data "as is", and the U. S. Geological Survey disclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will the U. S. Geological Survey be liable to you or to any third party for any direct, indirect, incidental, consequential, special, or exemplary damages or lost profits resulting from any use or misuse of these data. Acknowledgement of the U.S. Geological Survey, FISC St. Petersburg office, as a data source would be appreciated in products developed from these data, and such acknowledgement as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by the U. S. Geological Survey staff. Users should be aware that comparisons with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photo interpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such. U. S. Geological Survey, FISC St. Petersburg Amar Nayegandhi mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727-803-8747 8:30-5:00 M-F EST Call Survey for Detailsanayegandhi@usgs.govComputer Scientist The U. S. Geological Survey, FISC St. Petersburg office, would like to acknowledge NASA Goddard Space Flight Center for their cooperation and assistance in the development of the data. The U. S. Geological Survey would also like to acknowledge National Park Service management and personnel at Colonial National Historical Park. Unclassified UnclassifiedUnclassified Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcMap 9.2.2.1350 Shapefile All areas not covered by polygons correspond to areas of No Data (-100) on the Lidar tile. Processing steps (grid interpolation) may introduce additional error which has not been tested at the time of this publication. This shapefile was generated as an intermediate step to create a series of U. S. Geological Survey Lidar maps. All areas not covered by polygons correspond to areas of No Data (-100) on the Lidar tile. Raw elevation measurements have been determined to be within 1.5 meter horizontal accuracy. Processing steps (grid interpolation) may introduce additional error which has not been tested at the time of this publication. Elevations of the DEM are vertically consistent with the point elevation data, +/- 15cm. computer program 200504182005041920050420ground condition2500GeoTIFF data The floating-point Lidar data required conversion to integer raster. This was done with the Int() command using ARC Raster Calculator. 20080103 U. S. Geological Survey, FISC St. Petersburg Laurinda Travers mailing and physical address

600 4th Street S

Saint Petersburg FL 33703 USA 727-803-8747 8:30-5:00 M-F EST ESRI ArcMap 9.2.2.1350 The Raster to Feature command is used to convert the data into a vector shapefile. 20080103 U. S. Geological Survey, FISC St. Petersburg Laurinda Travers mailing and physical address

600 4th Street S

Saint Petersburg FL 33703 USA 727-803-8747 8:30-5:00 M-F EST ESRI ArcMap 9.2.2.1350 An attribute query is run to locate polygons with a GRIDCODE value of -100. An edit session is started on the shapefile, the queried polygons are removed using the delete key, edits are saved, and the edit session is ended.2006101814530100ESRI ArcMap 9.2.2.135020080103mailing and physical address

600 4th Street South

Saint PetersburgFL33701USA727-803-8747M-F, 8-5U. S. Geological Survey, FISC St. PetersburgLaurinda TraversMetadata created from XML files.2006102309225700ESRI ArcCatalog 9.2.2.135020080103mailing and physical address

600 4th Street South

St. PetersburgFL33701USA727-803-8747U. S. Geological Survery, FISC St. PetersburgLaurinda Travers2500computer programVector featurecomputer programXML data files This extent layer was generated from existing Lidar tile data using ArcMap 9.2.2.1350. The polygons represent specific regions of a 2x2km tile that have usable Lidar data. VectorSimplePolygonFALSE1TRUEFALSEG-polygon1 row and column 0.0000000.000000 meters Universal Transverse Mercator180.999600-75.0000000.000000500000.0000000.000000 North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983NAD_1983_UTM_Zone_18N North American Vertical Datum of 1988 .15 meters Explicit elevation coordinate included with horizontal coordinates Represents the extent of usable Lidar data to a specific 2x2km tile. The polygons represent specific regions of a 2x2km tile that have usable Lidar data. All areas not covered by polygons correspond to areas of No Data (-100) on the Lidar tile.ext_350_4122Feature Class1FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.IDIDNumber10GRIDCODEGRIDCODENumber10 mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727-803-8747 8:30-5:00 M-F EST Call USGS for Details eklipp@usgs.govU. S. Geological Survey, FISC St. PetersburgEmily Klipp Neither the U. S. Geological Survey nor the National Park Service shall be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics are not legal documents and are not intended to be used as such. Although all data published have been used by the U. S. Geological Survey and the National Park Service no warranty, expressed or implied, is made by the U. S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U. S. Geological Survey in the use of these data or related materials. 0.000 SHP0.001 dvddvd Call U. S. Geological Survey for Details Call U. S. Geological Survey for Details Contact U. S. Geological Survey for Details 200504182005041920050420 Open File Report 2008-1326 U. S. Geological Survey, FISC St. Petersburg Laurinda Travers mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727-803-8747 8:30-5:00 M-F EST Call Survey for Details ltravers@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Unclassified 20080222enhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile 20080717125316002008071712531500FALSE2008071712531600{37C4B574-CDE4-493A-B9FA-CB778C790534}20080717file://\\IGSAFPESWS126\H$\J_Brock\COLO\BE\LIDAR_be\be_e350_n4122\ext_350_4122.shpLocal Area Network0020.001ShapefileMicrosoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.5.1450ext_350_4122350001351077.01281741220014120809.5922851-76.690931-76.67856837.23264337.2217351ISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetNAD_1983_UTM_Zone_18N1