U. S. Geological Survey, FISC St. Petersburg 20081027 First vector digital data Open File Report 2008-1326 FISC St. Petersburg U. S. Geological Survey The U. S. Geological Survey in cooperation with the National Park Service (NPS) and the National Aeronautics and Space Administration (NASA), is to provide the coastal management community with usable, useful digital elevation products. The U. S. Geological Survey processes aircraft Lidar data (provided by NASA), develops software tools and algorithms to use and analyze the data and make products available to the coastal management community through a variety of media, including the internet, CD-ROMs, DVDs and data reports. contour_e350_n4128\\IGSAFPESWS126\H$\J_Brock\COLO\FS\LIDAR_fs\fr_e350_n4128\contour_e350_n4128.shp GIS contour lines of Colonial National Historical Park derived from a Lidar GeoTIFF file. This contour shapefile was generated from a Lidar GeoTIFF. It shows contour lines at 1-5 meter intervals, and will be used to aid in the interpretation and display of data files. See the source Lidar GeoTIFF tile for more specific accuracy information. en 20050418 20050419 20050420 REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground. ground condition Complete Unknown -76.692059-76.66925437.28349037.271723 350001.500000352001.5000004126357.5000004127627.955414 none Contour map elevation change none Colonial National Historical Park Virginia none First surface topography 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 Surveyinterests. 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 Surveydoes 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 Surveyis providing these data "as is", and the U. S. Geological Surveydisclaims 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 Surveybe 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 Surveystaff. 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. Jacobs Technolpogy contracted to U. S. Geological Survey Amar Nayegandhi Computer Sctientist mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727 803-8747 anayegandhi@usgs.gov 8:30-5:00 M-F EST Call Survey for Details 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. unknown Unclassified unknown Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcMap 9.2.2.1350. Shapefile The expected accuracy of the measured variables is as follows: attitude within 0.07 degree, 3-cm nominal ranging accuracy, and verticle elevation accuracy of +/- 15cm (bare earth). Quality checks are built into the dataprocessing software. This layer was generated from an existing Lidar tile. Contour lines break where there was no data (value of -100) in the original Lidar tiles. 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. 2500 computer program 20050418 20050419 20050420 ground condition unknown unknown The Lidar GeoTIFF data was too coarse to create aesthetically pleasing contours. A Neighborhood Statistics operation was run on the Lidar GeoTIFF file in ARCMap. The settings for the Neighborhood Statistics operation were a 14x14 cell rectangle, using the mean as the statistic type and then output to a temporary raster grid. 20071205 U. S. Geological Survey, FISC St. Petersburg Laurinda J. Travers mailing and physical address

600 4th Street South

Saint Petersburg FL 33701 USA 727-803-8747 8:30-5:00 M-F EST Call Survey for Details Contour lines were generated using the Contour operation in ArcMap. The temporary Neighborhood Statistics grid was used as the input surface and the contour interval was set to 1-5 meters, depending on elevation and slope. This was output to a permanent shapefile. 20080105 U. S. Geological Survey, FISC St. Petersburg Laurinda J.Travers mailing and physical address

600 4th Street South

Saint Petersburg FL 33701 USA 727-803-8747 8:30-5:00 M-F EST Metadata imported into ArcCatalog from XML file. 20080111 U. S. Geological Survey, FISC St. Petersburg Laurinda J. Travers mailing and physical address

600 4th Street South

Saint Petersburg FL 33701 USA 727 803-8747 8:30-5:00 M-F EST Vector String1661 SimplePolylineFALSE1661TRUEFALSE row and column 1.000000 1.000000 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 This contour shapefile was generated from a Lidar GeoTIFF. It shows contour lines at 1-5 meter intervals, and will be used to aid in the interpretation and display of data files. GIS contour lines of Colonial National Historical Park derived from a Lidar GeoTIFF file. contour_e350_n4128Feature Class1661FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.IDIDNumber10CONTOURCONTOURNumber14 U. S. Geological Survey, FISC St. Petersburg Emily Klipp mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727-803-8747 eklipp@usgs.gov 8:30-5:00 M-F EST Call USGS for Details GIS contour lines of Colonial National Historical Park derived from a Lidar GeoTIFF file. The U. S. Geological Survey gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from a U. S. Geological Survey server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U. S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. DEM 0.000 10.255 DVD Contact USGS for Details Contact USGS for Details Contact U. S. Geological Survey for Details 20050418 20050419 20050420 20080222 U. S. Geological Survey, FISC St. Petersburg Laurinda J. Travers mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727-803-8747 ltravers@usgs.gov 8:30-5:00 M-F EST Call Survey for Details FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Unclassified enhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile 20080717091446002008071709144600FALSE2008071709144600{7251140E-B8E9-4D2B-AF60-7A4A4CFDAD45}20080717Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.5.1450contour_e350_n4128350001.5352001.54127627.9554144126357.51-76.692059-76.66925437.2834937.2717231ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\IGSAFPESWS126\H$\J_Brock\COLO\FS\LIDAR_fs\fr_e350_n4128\contour_e350_n4128.shpLocal Area Network10.255ShapefileNAD_1983_UTM_Zone_18N1661