USGS-FISC, St. Petersburg, FL Fall 2007 Open File Report 2007-1422 St. Petersburg, FL USGS \\Firstvector digital data 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 USGS 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 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 20050901, 20050903, 20050904, 20050907, 20050908 ground condition Complete Unknown NONE Extent Gulf Islands National Seashore Florida Gulf of Mexico Bare earth topography Any use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Ensure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests. See section 6.3 Distribution Liability. Although the USGS is making these data sets available to others who may find the data of value, the USGS 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 USGS is providing these data "as is", and the USGS 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 USGS 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 USGS 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. United States Geological Survey, FISC St. Petersburg mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727 803-8747 Monday-Friday, 8-5, EST Call Survey for Details The USGS 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 USGS would also like to acknowledge park management and personnel at Gulf Islands National Seashore. Unclassified Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcMap 9.2 This layer is complete. 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 20050901, 20050903, 20050904, 20050907, 20050908ground condition The floating-point LiDAR data required conversion to integer raster. This was done with the Int() command using ARC Raster Calculator. 2007 National Park Service South Florida/Caribbean Network Iris Wilson mailing and physical address

18001 Old Cutler Road

Palmetto Bay FL 33157 USA (305) 252-0347 8:30-5:00 M-F EST Research Assistant(305) 253-0463 ESRI ArcGIS 9.2 The Raster to Feature command is used to convert the data into a vector shapefile. Summer 2007 National Park Service South Florida/Caribbean Network Iris Wilson mailing and physical address

18001 Old Cutler Road

Palmetto Bay FL 33157 USA (305) 252-0347 8:30-5:00 M-F EST Research Assistant(305) 253-0463 ESRI ArcGIS 9.2 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 ArcGIS 9.2Summer 2007Metadata created.\\2006102309225700ESRI ArcCatalog 9.220070815USGS-FISC St. Petersburgmailing and physical address

600 4th Street South

St. PetersburgFL33701USA727-803-8747Metadata imported.D:\Science_Support_PC\L_Travers\J_Brock\Updated_Lidar_OFRS\GUIS_FL\Metadata\Meta_temps\Meta_extent.xml2007081713504900 This extent layer was generated from existing LiDAR tile data using ARCMap 9.2. Universal Transverse Mercator 16 0.999600 -75.000000 0.000000 500000.000000 0.000000 row and column meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North American _1983NAD83_UTM_Zone_16N North American Vertical Datum of 1988 .15 meters Explicit elevation coordinate included with horizontal coordinates United States Geological Survey, FISC St. Petersburg 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 Neither the National Park Service nor the USGS 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 USGS and NPS, no warranty, expressed or implied, is made by the USGS 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 USGS in the use of these data or related materials. 0.000 Call USGS for Details Call USGS for Details 20050901, 20050903, 20050904, 20050907, 20050908 United States Geological Survey, FISC St. Petersburg 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 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Unclassified 20070816en 20070816151808002007081713504900TRUE{8B6DB4A7-80A4-4421-BBB2-C009A50799F1}20070816file://\\IGSAFPESWS114\D$\Science_Support_PC\L_Travers\J_Brock\Updated_Lidar_OFRS\GUIS_FL\Metadata\Meta_temps\Meta_extentLocal Area Network