PRELIMINARY IMAGE MAP OF THE 2007 BUCKWEED FIRE PERIMETER, MINT CANYON QUADRANGLE, LOS ANGELES COUNTY, CALIFORNIA By Perry S. Clark, Wendy S. Scratch, Gaylord W. Bias, Gregory B. Stander, Jenne L. Sexton, and Bridgette J. Krawczak U.S. Geological Survey Open-File Report 2008-1051 U.S. Department of the Interior DIRK KEMPTHORNE, Secretary U.S. Geological Survey Mark D. Myers, Director Point of Contact: Michael J. Cooley USGS National Center Reston, VA 20192 703-648-4722 mcooley@usgs.gov ACKNOWLEDGMENTS Technical support and review was provided by Daniel D. Daniels, Maria L. McCormick, Charles P. Matthys, Christine M. Lund, Thomas J. Owens, Michael J. Cooley, Jon C. Campbell, Stafford G. Binder, Lisa J. Binder, Bruce A. Boman, and Jerry W. Wagner. I. INTRODUCTION The U.S. Geological Survey created 55 image maps over the five major areas burned by the October 2007 wildfires in southern California. These maps were created for response planning using best available pre-fire aerial photography. Each image map covers approximately 49 square miles, the same as its matching USGS topographic map. The USGS topographic maps are available as lithographic prints and in digital form from the USGS Store and can be accessed at: http://store.usgs.gov/ The USGS, through its National Geospatial Technical Operations Center (NGTOC), is in the process of developing a 7.5-minute quadrangle-based image-map product. The future new image-map product and these 55 California Fire Perimeter maps are an enhanced, layered, digital map product being delivered in a geo-registered Portable Document Format (PDF) or GeoPDF™ file. These GeoPDFs are layered allowing the user to turn off and on separate map layers in the document when viewing or printing in Adobe Reader, Adobe Acrobat or Adobe Acrobat Pro. The GeoPDF also allows users with the free GeoPDF Toolbar from TerraGo Technologies to view the maps with multiple coordinate displays that users can configure independently to display coordinate values in various coordinate systems using various map projections, and datums. Users can also measure length and area, and perform GPS tracking. These GeoPDF’s are also GeoMark and Adobe Reader enabled extending functionality out to users. This allows users to add notes and other mark-ups using Adobe tools, and with the GeoPDF toolbar users can add notes, stamps, and other mark-ups that have geospatial intelligence, which can be exported as .shp or .kml geospatial files for use in a GIS. Users can also import .shp, .kml, and .gpx geospatial files with the GeoPDF Toolbar. This product contains Portable Document Format files, which require Adobe Acrobat, Adobe Acrobat Pro, or the free Adobe Reader for viewing and printing. The Adobe Reader is available for free download at: http://www.adobe.com/products/acrobat/readstep2.html To take advantage of the PDF’s geospatial qualities, TerraGo Technologies offers a free GeoPDF toolbar plug-in for the Adobe Acrobat, Acrobat Pro, or Adobe Reader versions 6.x or 7.x or 8.x, available at: http://www.terragotech.com/solutions/geopdftoolbar.php (Currently available for Windows only). These preliminary image maps showing the areas affected by the 2007 California wildfires are identified as such by a note in the map collar below the national map accuracy statement. The data depicting the fire perimeters was obtained from the GEOMAC website at: http://geomac.usgs.gov/. To enhance the readability of the text, USGS experimented with halo text. In an effort to keep file sizes to a minimum and resolution to a maximum, USGS tested different export parameters and file compression software. As a result, the file size of the California fire maps ranges between eight-MB and 46MB, with most maps falling in the 30MB to 46MB range. Resolution of the image is approximately two-meters on the ground, allowing the integrity of the image to be maintained close to 400 percent zoom ratio. Beyond 400 percent the image begins to degrade. The date of the pre-fire imagery is 2005. II. DISCLAIMERS: Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. These files have been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Any use of trade, product or firm names is for descriptive purposes only, and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. 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 display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. IV. TO ACCESS THE DATA The data files can be downloaded via the web at: http://pubs.usgs.gov/of/2008/1051/ Software Required: Adobe Acrobat (6.x, 7.x, or 8.x), or Adobe Acrobat Pro (6.x, 7.x, or 8.x), or the free Adobe Reader (6.x, 7.x, or 8.x) 8.x is recommended TerraGo Technologies free GeoPDF toolbar V. CONTENTS CA_Mint_Canyon_of2008-1051_README.txt CA_Mint_Canyon_of2008-1051_geo.pdf CA_of2008_1029-1083_index.pdf Crosswalk of Layer Names found in the .pdf Map Documents Hwy_Markers..........Route Marker Symbols for Interstate, US, and State Highways Fire_Perimeter.......Red Cross-hatch symbol defining the Fire Perimeter Waterbody_Names......Geographic feature text derived from the WaterFlow_Names National Hydrography Dataset (NHD) WaterPoint_Names Hydrography_Names....Geographic feature text derived from Geographic Names Information System (GNIS) Place_Names..........Text for populated places (GNIS) Locale_Names.........Text for known localities (may not be populated) (GNIS) Culture_Text.........Text for miscellaneous culture (Schools, Churches etc.) (GNIS) LinearCulture_Text...Text for linear culture (Dams, Bridges etc.) (GNIS) Landform_Names.......Text for geographic landforms (GNIS) Hwy_Symbol...........Road symbols for Interstate, US, and State Highways Quad_Name_Image.tif..Non-downloadable Digital Orthophoto Quadrangle (DOQ)