Identification_Information: Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Publication_Date: Unknown Title: Vectorized Shoreline of Central California Derived from 1945-1976 Source Data Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1251 Publication_Information: Publication_Place: U.S. Geological Survey, Pacific Science Center, Santa Cruz, California Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2006/1251 Larger_Work_Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Originator: Bruce Richmond Originator: Peter Ruggiero Originator: Jeff List Publication_Date: Unknown Title: National Assessment of Shoreline Change: Part 3, Historical Shoreline Changes and Associated Coastal Land Loss Along the Sandy Shorelines of California Coast Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1219 Publication_Information: Publication_Place: U.S. Geological Survey, Pacific Science Center, Santa Cruz Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2006/1219 Description: Abstract: There are critical needs for a nationwide compilation of reliable shoreline data. To meet these needs, the USGS has produced a comprehensive database of digital vector shorelines by compiling shoreline positions from pre-existing historical shoreline databases and by generating historical and modern shoreline data. Shorelines are compiled by state and generally correspond to one of four time periods: 1800s, 1920s-1930s, 1970s, and 1998-2002. Each shoreline 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. Shoreline vectors derived from historic sources (first three time periods) represent the high water line at the time of the survey, whereas modern shorelines (final time period) represent the mean high water line. Purpose: Historical shoreline change is considered to be a crucial element in studying the vulnerability of the national shoreline. These data are used in a shoreline change analysis for the USGS National Assessment Project. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1945 Ending_Date: 1976 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.023189 East_Bounding_Coordinate: -119.854166 North_Bounding_Coordinate: 38.241026 South_Bounding_Coordinate: 34.431990 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: Shoreline Theme_Keyword: Historic Shoreline Theme_Keyword: Shoreline Change Rate Theme_Keyword: Linear Regression Rate Theme_Keyword: Endpoint Rate Theme_Keyword: Baseline Theme_Keyword: Beach Erosion Theme_Keyword: Beach Nourishment Theme_Keyword: LIDAR Theme_Keyword: T-sheet Theme_Keyword: Tp-sheet Theme_Keyword: Coastal Survey Map Place: Place_Keyword_Thesaurus: General Place_Keyword: United States Place_Keyword: California Access_Constraints: None Use_Constraints: This data set is not to be used for navigational purposes. Public domain data from the U.S. government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Bruce Richmond Contact_Organization: U.S. Geological Survey, Pacific Science Center Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: Ca Postal_Code: 95060 Country: USA Contact_Voice_Telephone: (831)-427-4450 Contact_Facsimile_Telephone: (831)-427-4748 Hours_of_Service: Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Data_Quality_Information: Logical_Consistency_Report: There is significant agreement of linework between adjacent shorelines. Shorelines were checked for accuracy, but no edgematching attempts were made between adjacent shorelines even if slight offsets existed. Completeness_Report: This shoreline data adequately represented the shoreline at the time of the survey. Remaining gaps in this data, if applicable, are a consequence of non-existing data or existing data that did not meet quality assurance standards. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The maximum estimated positional error for this shoreline is 10.1 meters. Please visit our full report on shoreline change in the Coastline of California (http://pubs.usgs.gov/of/2006/1219/), under the heading 'Uncertainties and Errors', for a complete explanation of the measurement error. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), National Environmental Satellite, Data, and Information Service (NESDIS), and National Ocean Service (NOS) Publication_Date: Unknown Title: Cencal_1976, Vector Shorelines from Georeferenced Scanned Coastal Maps Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Historic Shoreline Database Issue_Identification: 1970s Shoreline Publication_Information: Publication_Place: Silver Spring, Maryland Publisher: U.S. Department of Commerce, National Oceanic and Atmospheric Administration Other_Citation_Details: Senior cartographer, Address: 1315 East-West Highway City: Silver Spring State: Maryland Postal_Code: 20910-3282 Country: USA Contact_Voice_Telephone: (301) 713-3226 Contact_Facsimile_Telephone: (301) 713-4176 Contact_Electronic_Mail_Address: info_center@ngs.noaa.gov Online_Linkage: http://www.csc.noaa.gov/shoreline/ Online_Linkage: http://mapfinder.nos.noaa.gov Larger_Work_Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Originator: Bruce Richmond Originator: Peter Ruggiero Originator: Jeff List Publication_Date: Unknown Title: National Assessment of Shoreline Change: Part 3, Historical Shoreline Changes and Associated Coastal Land Loss Along the Sandy Shorelines of California Coast Series_Information: Series_Name: Open File Report Issue_Identification: 2006-1219 Publication_Information: Publication_Place: USGS Pacific Science Center, Santa Cruz, California Publisher: USGS Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2006/1219 Type_of_Source_Media: Vector Shorelines Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1976 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NOS T-Sheets Source_Contribution: NOAA NOS Topographic Sheets Source_Information: Source_Citation: Citation_Information: Originator: California Spatial Information Library (CaSIL) Publication_Date: Unknown Title: Cencal 1944_1956, USGS Digital Raster Graphics Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: USGS Digital Raster Graphics Issue_Identification: 1944-1956 Shoreline Publication_Information: Publication_Place: USGS Pacific Science Center, Santa Cruz, California Publisher: USGS Coastal and Marine Geology Program Other_Citation_Details: Earth Science Information Center U.S. Geological Survey 1400 Independence Road Rolla, MO 65401 Telephone: 573-308-3500 FAX: 573-308-3615 TDD: 573-341-2716 E-mail: mcmcesic@usgs.gov Online_Linkage: http://gis.ca.gov/DRG.epl Online_Linkage: http://topomaps.usgs.gov/drg/ Larger_Work_Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Originator: Bruce Richmond Originator: Peter Ruggiero Originator: Jeff List Publication_Date: Unknown Title: National Assessment of Shoreline Change: Part 3, Historical Shoreline Changes and Associated Coastal Land Loss Along the Sandy Shorelines of California Coast Series_Information: Series_Name: Open File Report Issue_Identification: 2006-1219 Publication_Information: Publication_Place: USGS Pacific Science Center, Santa Cruz, California Publisher: USGS Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2006/1219 Type_of_Source_Media: Vector Shorelines Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1944 Ending_Date: 1956 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS DRGs Source_Contribution: USGS Digital Raster Graphics Process_Step: Process_Description: Shorelines from one or more sources were sought in an effort to develop a single shoreline for each time period. Digital shorelines, if available from another agency, were acquired. If no digital shorelines were available or if a data set was incomplete, T-sheets were requested from NOAA and received as scanned raster images. T-sheets were geo-registered using ERDAS Imagine geographic imaging software by placing 6-10 well-spaced ground control points at gridline intersections. Some T-sheets may have required additional coordinate transformation information from NOAA to account for datum offsets between historical datums (USSD) and modern datums (NAD27 or NAD83). Datum transformations were applied to GCP coordinates prior to registration. Total RMS error for the rectification process was maintained below 1 pixel, which translates to approximately 4m at a scale of 1:20,000 and 1.5m at a scale of 1:10,000. Geo-registered T-sheets were loaded in ArcView and vector shorelines were digitized. Where historical T-sheets were unavailable USGS Digital Raster Graphics from the California Spatial Information Library were downloaded and the shoreline was digitized from the georeferenced maps. Please see http://gis.ca.gov/DRG.epl for more information. Quality assessments were performed and shorelines were edited to remove any overlap between adjacent shorelines. No edgematching between adjacent shorelines was attempted. Finally, shorelines from all sources were merged to produce a single shoreline for the period. The final shoreline was coded with 6 attribute fields (ID, Type, Date, Descr, Source, and Accuracy) required for the Digital Shoreline Analysis System (DSAS), which was used to calculate shoreline change rates. The attributes reflect the source of the data and the original survey year. Process_Date: Unknown Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Bruce Richmond Contact_Organization: U.S. Geological Survey, Pacific Science Center Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: Ca Postal_Code: 95060 Country: USA Contact_Voice_Telephone: (831)-427-4450 Contact_Facsimile_Telephone: (831)-427-4748 Hours_of_Service: Monday through Friday, 8 a.m. to 5 p.m., Pacific Standard Time Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 154 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -123.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.001024 Ordinate_Resolution: 0.001024 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: CenCal1945_1976 Entity_Type_Definition: Vector Shoreline from NOS T-Sheets Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: ID Attribute_Definition: Feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 40677 Attribute: Attribute_Label: TYPE Attribute_Definition: Type of feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Shoreline Enumerated_Domain_Value_Definition: Vector shoreline. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: DESCR Attribute_Definition: Detailed description of the feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Describes additional characteristics of the feature. Attribute: Attribute_Label: SOURCE Attribute_Definition: Agency that provided feature or data used to create feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NOAA NOS T-Sheets Enumerated_Domain_Value_Definition: NOAA Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: ACCURACY Attribute_Definition: Position accuracy of feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: DATE Attribute_Definition: Date of Shoreline Segment Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dates Enumerated_Domain_Value_Definition: NOS T-Sheet Dates Enumerated_Domain_Value_Definition_Source: NOAA NOS T-Sheets Beginning_Date_of_Attribute_Values: 19450101 Ending_Date_of_Attribute_Values: 19760101 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Science Center Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: Ca Postal_Code: 95060 Country: USA Contact_Voice_Telephone: (831) 427-4450 Contact_Facsimile_Telephone: (831) 427-4748 Hours_of_Service: Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time Resource_Description: USGS Open-File Report 2006-1219 Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI Shapefile Format_Version_Date: 20060901 Format_Specification: Seven files comprise the ArcView shapefile: .dbf, .shp, .shx, .prj, .avl, .sbx, .sbn File_Decompression_Technique: no compression applied Transfer_Size: 0.654 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: USGS Pacifc Science Center Fees: None Metadata_Reference_Information: Metadata_Date: 20060826 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Science Center Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: Ca Postal_Code: 95060 Country: USA Contact_Voice_Telephone: (831)-427-4450 Contact_Facsimile_Telephone: (831)-427-4748 Hours_of_Service: Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile