Cheryl Hapke David Reid Krystal Green 2007 vector digital data Open-File Report 2007-1112 U.S. Geological Survey, Pacific Science Center, Santa Cruz, California U.S. Geological Survey, Coastal and Marine Geology Program https://pubs.usgs.gov/of/2007/1112/SCal.zip https://pubs.usgs.gov/of/2007/1112/ Cheryl Hapke David Reid Krystal Green Mark Borrelli 2007 Open-File Report 2007-1112 U.S. Geological Survey, Pacific Science Center, Santa Cruz U.S. Geological Survey, Coastal and Marine Geology Program https://pubs.usgs.gov/of/2007/1112/ socal1998 There are critical needs for a nationwide compilation of reliable cliff edge data. To meet these needs, the USGS has produced a comprehensive database of digital vector cliff edges by compiling cliff edge positions from pre-existing historical cliff edge databases and by generating historical and modern cliff edge data. Cliff edges are compiled by state and generally correspond to two periods: 1920s-1930s and 1998-2002. Each cliff edge may represent a compilation of data from one or more sources for one or more dates provided by one or more agencies. Details regarding source are provided in the 'data quality information' section of this metadata report. Cliff edge vectors derived from both historic sources (first time period) and modern sources (final time period) represent the cliff edge at the time of the survey. Historical cliff erosion is considered to be a crucial element in studying the vulnerability of the national coastline. These data are used in a cliff erosion analysis for the USGS National Assessment Project. en 19980410 ground condition Complete None planned -119.999829 -117.235386 34.494209 32.630949 -119.998999-117.24353132.66667434.457198 General Cliff Edge Historic Cliff Edge Cliff Erosion Rate Endpoint Rate Baseline Cliff Erosion LIDAR T-sheet Tp-sheet Coastal Survey Map U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP ESRI polyline shapefile ISO 19115 Topic Category oceans oceans and estuaries oceans and coastal geoscientificInformation Geographic Names Information System, USGS, Reston, VA United States California None Public domain data are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey (USGS) must be referenced as the originator of the dataset in any future products or research derived from these data. Cheryl Hapke U.S. Geological Survey mailing and physical address

Patuxent Wildlife Research Center

University of Rhode Island

317 Woodward Hall, Dept. of Geosciences

Kingston RI 02881 USA 401-874-5532 401-874-2190 chapke@usgs.gov Monday through Friday, 9 a.m. to 5 p.m., Eastern Standard Time Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Cheryl Hapke David Reid 2007 1.0 Open-File Report 2007-1133 U.S. Geological Survey, Pacific Science Center, Santa Cruz U.S. Geological Survey, Coastal and Marine Geology Program https://pubs.usgs.gov/of/2007/1133/ Shapefile The data supplied here are a compilation of information collected from numerous LIDAR (LIght Detection And Ranging) surveys. Attribute data was generated once the point solutions from the elevation point data were processed and identified as representing the cliff edge location. The attributes in this dataset are based on the Digital Shoreline Analysis System (DSAS) version 3.2; An ArcGIS extension for calculating shoreline change (Thieler, E.R., Himmelstoss, E.A., Zichichi, J.L., and Miller, T.M. 2005. U.S. Geological Survey Open-File Report 2005-1304). The data has gone through a series of QA/QC procedures, and is therefore believed to accurately reflect the data gathered as part of the National Assessment of Shoreline Change Study. There is significant agreement of linework between adjacent cliff edges. Cliff edges were checked for accuracy, but no edgematching attempts were made between adjacent cliff edges even if slight offsets existed. This cliff edge data adequately represented the cliff edge at the time of the survey. Remaining gaps in these data, if applicable, are a consequence of non-existing data or existing data that did not meet quality assurance standards. The maximum estimated positional error for this cliff edge is 1.4 meters. Please visit our full report on cliff erosion along the Coastline of California (<https://pubs.usgs.gov/of/2007/1133), under the heading "Uncertainties and Errors", for a complete explanation of the measurement error. Coastal Remote Sensing/Coastal Services Center 20050829 1.0 Charleston, SC NOAA Coastal Services Center This data set has been extracted from one much larger. See the URL for the location of this larger data set. http://www.csc.noaa.gov/lidar/ http://maps.csc.noaa.gov/TCM/ Lidar Vector Shoreline 19980410 ground condition Lidar USGS/NASA Airborne Topographic Mapper The USGS in collaboration with NASA, used the NASA Airborne Topographic Mapper (ATM II and III) mounted on a Twin Otter Aircraft to map coastal beaches. The raw data was georeferenced at elevation points every few square meters. The original data from ATM was collected in WGS 84, ITRF 97, in a geographic (lat/long) coordinate system with irregular spacing. The data was then converted to NAD 83 and NAVD 88. The cliff edge generation involved an analysis of shore-normal profiles at 20m intervals alongshore. The point solutions were connected to produce a continuous vector cliff edge in shapefile format. A shore-parallel reference line was digitized as a permanent baseline for any future cliff edge generation. Data were projected to UTM zone 10 NAD27 for statistical analysis in the Digital Shoreline Analysis System (DSAS) software. 2006 Cheryl Hapke U.S. Geological Survey mailing and physical address

USGS Patuxent Wildlife Research Center

University of Rhode Island

Coastal Field Station

317 Woodward Hall, Dept. of Geosciences

Kingston RI 02881 USA 401-874-5532 401-874-2190 chapke@usgs.gov Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time Data were projected from UTM zone 11 to geographic Tool: ArcGIS > ArcToolbox > Toolboxes > Data Management Tools > Project Command issued: ['GCS_North_American_1983',DATUM['D_North_American_1983',SHPERIOD['GRS_1980',6378137.0,298.25722101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]] 20070215 Emily Himmelstoss U.S. Geological Survey Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-548-8700 x2262 508-457-2310 ehimmelstoss@usgs.gov Vector String 89 SimplePolylineFALSE89FALSEFALSE 0.000001 0.000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 SoCal1998 Vector Cliff Edge from Lidar Overflight U.S. Geological Survey Feature Class89 FID Internal feature number ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry ESRI Coordinates defining the features. DESCR Detailed description of the feature. U.S. Geological Survey Describes additional characteristics of the feature. String254 ACCURACY Position accuracy of feature. U.S. Geological Survey 0 The accuracy is not given but should be 1.4 meters. U.S. Geological Survey Number4 ID Feature number. U.S. Geological Survey 1 40677 Number9 Date_ Date of Lidar overflight U.S. Geological Survey 19980410 The date of the data collection. U.S. Geological Survey String10 U.S. Geological Survey mailing and physical address

Pacific Science Center

400 Natural Bridges Drive

Santa Cruz CA 95060 USA 831-427-4450 831-427-4748 Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time downloadable data Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Neither the U.S. Government nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy. SHP Unspecified ESRI Polyline Shapefile. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information. The SBN and SBX files contain the spatial index of the geospatial data. The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The XML file contains the metadata describing the data set. zip archive 0.348 0.562 https://pubs.usgs.gov/of/2007/1112/SCal.zip https://pubs.usgs.gov/of/2007/1112/ Data are downloadable via the World Wide Web (WWW). None These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. 20070320 Cheryl Hapke U.S. Geological Survey mailing and physical address

USGS Patuxent Wildlife Research Center

University of Rhode Island

Coastal Field Station

317 Woodward Hall, Dept. of Geosciences

Kingston RI 02881 USA 401-874-5532 401-874-2190 chapke@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time enhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350socal1998-119.998999-117.24353134.45719832.6666741-119.998999-117.24353134.45719832.6666741ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\Emihimltxp\sea_disk (e)\CA_cliffs\metadata_1\review\May2007_final\Southern\socal1998.shpLocal Area Network0.562ShapefileGCS_North_American_1983892007050116070400200809161409050020080916