Metadata: Identification_Information: Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: Rueen-Fang Wang Originator: Eli Alteljevich Originator: Bruce E. Jaffe Publication_Date: 2017 Title: San Francisco Bay-Delta bathymetric/topographic digital elevation model(DEM) Geospatial_Data_Presentation_Form: Raster Digital Data Set Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F7GH9G27 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://www.sciencebase.gov/catalog/file/get/58599681e4b01224f329b484 Online_Linkage: https://doi.org/10.5066/F7GH9G27 Description: Abstract: A high-resolution (10-meter per pixel) digital elevation model (DEM) was created for the Sacramento-San Joaquin Delta using both bathymetry and topography data. This DEM is the result of collaborative efforts of the U.S. Geological Survey (USGS) and the California Department of Water Resources (DWR). The base of the DEM is from a 10-m DEM released in 2004 and updated in 2005 (Foxgrover and others, 2005) that used Environmental Systems Research Institute(ESRI), ArcGIS Topo to Raster module to interpolate grids from single beam bathymetric surveys collected by DWR, the Army Corp of Engineers (COE), the National Oceanic and Atmospheric Administration (NOAA), and the USGS, into a continuous surface. The Topo to Raster interpolation method was specifically designed to create hydrologically correct DEMs from point, line, and polygon data (Environmental Systems Research Institute, Inc., 2015). Elevation contour lines were digitized based on the single beam point data for control of channel morphology during the interpolation process. Checks were performed to ensure that the interpolated surfaces honored the source bathymetry, and additional contours and(or) point data were added as needed to help constrain the data. The original data were collected in the tidal datum Mean Lower or Low Water (MLLW), or the National Geodetic Vertical Datum of 1929 (NGVD29). All data were converted to NGVD29. The 2005 USGS DEM was updated by DWR, first by converting the DEM to the current modern datum of National Geodetic Vertical Datum of 1988 (NGVD88) and then by following the methodology of the USGS DEM, established for the 2005 DEM (Foxgrover and others, 2005) for adding newly collected single and multibeam bathymetric data. They then included topographic data from lidar surveys, providing the first DEM that included the land/water interface (Wang and Ateljevich, 2012). The USGS further updated and expanded the DWR DEM with the inclusion of USGS interpolated sections of single beam bathymetry data collected by the COE and USGS scientists, expanding the DEM to include the northernmost areas of the Sacramento-San Joaquin Delta, and by making use of a two-meter seamless bathymetric/topographic DEM from the USGS EROS Data Center (2013) of the San Francisco Bay region. The resulting 10-meter USGS DEM encompasses the entirety of Suisun Bay, beginning with the Carquinez Strait in the west, east to California Interstate 5, north following the path of the Yolo Bypass and the Sacramento River up to Knights Landing, and the American River northeast to the Nimbus Dam, and south to areas around Tracy. The DEM incorporates the newest available bathymetry data at the time of release, as well as including, at minimum, a 100-meter band of available topography data adjacent to most shorelines. No data areas within the DEM are areas where no elevation data exists, either due to a gap in the land/water interface, or because lidar was collected over standing water that was then cut out of the DEM. Purpose: These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify elevations. These data are not intended to be used for navigational purposes. Supplemental_Information: Additional information about the field activities from which these data were derived are available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=S0311CA Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2016 Currentness_Reference: 1933-2012 Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.767945 East_Bounding_Coordinate: -121.198992 North_Bounding_Coordinate: 38.800412 South_Bounding_Coordinate: 37.363892 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:58599681e4b01224f329b484 Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: digital elevation models Theme_Keyword: bathymetry Theme_Keyword: LIDAR Theme_Keyword: topography Theme_Keyword: geographic information systems Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: single-beam echo sounder Theme_Keyword: topographic mapping Theme_Keyword: Global Positioning System (GPS) observations Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: Water Depth Theme_Keyword: GPS (Global Positioning System) Theme_Keyword: Echo Sounders Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Sacramento-San Joaquin Delta Place_Keyword: Yolo By-Pass Place_Keyword: Sacramento Place_Keyword: Suisun Bay Place_Keyword: San Francisco Bay Delta Place_Keyword: San Joaquin River Place_Keyword: Sacramento River Place_Keyword: Sacramento River Deep Water Ship Channel Place_Keyword: Fremont Weir Place_Keyword: Knights Landing Place_Keyword: American River Place_Keyword: Nimbus Dam Place_Keyword: Tracy Place_Keyword: Liberty Island Place_Keyword: Mildred Island Place_Keyword: San Francisco Bay Access_Constraints: None. Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigational purposes. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/58599681e4b01224f329b484?name=SFBayDeltaDEM10m2016.jpg&allowOpen=true Browse_Graphic_File_Description: image map showing 10-m resolution digital elevation model (DEM) of the Sacramento-San Joaquin Delta, color-coded to show elevation Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1 (Build 4959) Service Pack N/A (Build N/A) Cross_Reference: Citation_Information: Originator: Fregoso, T.A. Originator: Wang, R-F.T. Originator: Ateljevich, E.S. Originator: Jaffe, B.E. Publication_Date: 2017 Title: A new seamless, high-resolution digital elevation model of the San Francisco Bay-Delta Estuary, California Geospatial_Data_Presentation_Form: U.S. Geological Survey Open-File Report 2017-1067 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20171067 Cross_Reference: Citation_Information: Originator: International Hydrographic Organization (IHO) Publication_Date: 2008 Title: IHO standards for hydrographic surveys (5th ed.) Geospatial_Data_Presentation_Form: comma-delimited ascii Publication_Information: Publication_Place: Monaco Publisher: International Hydrographic Bureau Special Publication 44, 28p. Online_Linkage: https://www.iho.int/iho_pubs/standard/S-44_5E.pdf Cross_Reference: Citation_Information: Originator: Environmental Systems Research Institute, Inc (ESRI) Publication_Date: 2015 Title: Topo to Raster help page Geospatial_Data_Presentation_Form: web page Publication_Information: Publication_Place: Redlands, CA Publisher: ESRI Online_Linkage: http://desktop.arcgis.com/en/desktop/latest/tools/3d-analyst-toolbox/topo-to-raster.htm Cross_Reference: Citation_Information: Originator: Foxgrover, A. Originator: Smith, R.E. Originator: Jaffe, B.E. Publication_Date: 2005 Title: Suisun Bay and Delta Bathymetry Geospatial_Data_Presentation_Form: web page Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://sfbay.wr.usgs.gov/sediment/delta/index.html Cross_Reference: Citation_Information: Originator: Wang, R. Originator: Ateljevich, E. Publication_Date: 2012 Title: A continuous surface elevation map for modeling, chapter 6 in California Department of Water Resources, Methodology for flow and salinity estimates in the Sacramento-San Joaquin Delta and Suisun Marsh, 33rd Annual Progress Report to the State Water Resources Control Board Geospatial_Data_Presentation_Form: web page Publication_Information: Publication_Place: Sacramento, CA Publisher: California Department of Water Resources Online_Linkage: http://baydeltaoffice.water.ca.gov/modeling/deltamodeling/AR2012/Chapter%206_2012_Web.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. Logical_Consistency_Report: No formal logical accuracy tests were conducted. Completeness_Report: Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Data is as accurate as source data used, no further tests were conducted, and no claims are made to accuracy. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Data is as accurate as source data used, no further tests were conducted, and no claims are made to accuracy. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: United States Army Corps of Engineers, Sacramento District, California, Reclamation Board Publication_Date: 2002 Title: Sacramento and San Joaquin River basins, California, comprehensive study: interim report Geospatial_Data_Presentation_Form: Other Publication_Information: Publication_Place: USACE holdings Publisher: U.S. Army Corps of Engineers, Sacramento District: Reclamation Board, State of California Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19970101 Ending_Date: 19970102 Source_Currentness_Reference: ground condition at time of survey Source_Citation_Abbreviation: American River Comp Study Source_Contribution: Topographic/bathymetric used as input for DEM Source_Information: Source_Citation: Citation_Information: Originator: Sea Surveyor, Inc. Publication_Date: 20050128 Title: Bathymetry data from the John F. Baldwin and Stockton Deep Water Ship Channels (San Pablo Bay to Stockton) as well as the Sacramento Deep Water Ship Channel (DWSC) Geospatial_Data_Presentation_Form: Vector Digital Data Set Publication_Information: Publication_Place: USACE, San Francisco District Publisher: U.S. Army Corps of Engineers, San Francisco District Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040801 Ending_Date: 20041231 Source_Currentness_Reference: ground condition at time of survey Source_Citation_Abbreviation: 2004 Corp Deep Water Ship Channel Source_Contribution: Bathymetric data that was used in final DEM Source_Information: Source_Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: David P. Finlayson Originator: Bruce E. Jaffe Originator: Thomas Reiss Originator: David L. Smith Originator: Brian Mulvey Publication_Date: 2017 Title: Bathymetry and acoustic backscatter data of the Sacramento River, from the Feather River to Knights Landing, California in February, 2011 Geospatial_Data_Presentation_Form: Raster Digital Data Set Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey - Science Base Online_Linkage: https://www.sciencebase.gov/catalog/item/588f8d74e4b072a7ac08c35e Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20110131 Ending_Date: 20110204 Source_Currentness_Reference: ground condition at time of survey Source_Citation_Abbreviation: USGS Sac River Multibeam Source_Contribution: bathymetry data used in DEM Source_Information: Source_Citation: Citation_Information: Originator: Dean Tyler Publication_Date: 20130322 Title: Topo/bathymetric model of San Francisco Bay, California Geospatial_Data_Presentation_Form: Raster Digital Data Set Publication_Information: Publication_Place: web Publisher: USGS EROS Data Center Online_Linkage: http://edcintl.cr.usgs.gov/downloads/sciweb1/shared/topo/downloads/Topobathy/TOPOBATHY_SAN_FRANCISCO_ELEV_METERS.zip Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2013 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: USGS 2-m Bathy/Topo Source_Contribution: Sections of DEM used to help create this dataset Source_Information: Source_Citation: Citation_Information: Originator: Lisa V. Lucas Originator: Jon R. Burau Publication_Date: 20061001 Title: Updated Mildred Island 2001 Depth Sounding Data Geospatial_Data_Presentation_Form: Excel file Publication_Information: Publication_Place: web Publisher: U.S. Geological Survey Online_Linkage: https://sfbay.wr.usgs.gov/access/wqdata/overview/people/lisa.html Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010601 Ending_Date: 20010602 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Mildred Island Source_Contribution: Bathymetry data used in DEM Source_Information: Source_Citation: Citation_Information: Originator: Rueen-Fang Wang Originator: Eli Ateljevich Publication_Date: 20120111 Title: San Francisco Bay and Sacramento-San Joaquin Delta DEM Geospatial_Data_Presentation_Form: Raster Digital Data Set Publication_Information: Publication_Place: web Publisher: California Department of Water Resources - Bay Delta Online_Linkage: http://baydeltaoffice.water.ca.gov/modeling/deltamodeling/modelingdata/DEM.cfm Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19320101 Ending_Date: 20120101 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DWR DEM Source_Contribution: Portions of DEM used to create current DEM Source_Information: Source_Citation: Citation_Information: Originator: Fugro West Publication_Date: 2008 Title: Bathymetric Surveys in Support of Urban Levees, Geotechnical Evaluation. Prepared for URS Corporation and California Department of Water Resources, DWR Task Order 32 Geospatial_Data_Presentation_Form: Raster Digital Data Set Publication_Information: Publication_Place: DWR holdings Publisher: DWR Online_Linkage: floodsafe@water.ca.gov Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080101 Ending_Date: 20080102 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: ULEP Source_Contribution: Bathymetry data used in DEM Source_Information: Source_Citation: Citation_Information: Originator: DWR CVFED - FloodSafe California Publication_Date: 2014 Title: Central Valley Floodplain Evaluation and Delineation Program Geospatial_Data_Presentation_Form: Raster Digital Data Set Publication_Information: Publication_Place: DWR CVFED Holdings Publisher: California Department of Water Resources Online_Linkage: floodsafe@water.ca.gov Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080101 Ending_Date: 20100102 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: CVFED Lidar Source_Contribution: Topographic data used in DEM Process_Step: Process_Description: Using the ArcGIS Clip tool, the 2012 DWR DEM was clipped of unneeded areas and areas that were to be replaced. Source_Used_Citation_Abbreviation: DWR DEM Process_Date: 2015 Process_Step: Process_Description: Topobathymetric Model of San Francisco Bay, California data were clipped of unneeded areas using ArcGIS clip tool, then resampled to 10 m cell size. Source_Used_Citation_Abbreviation: USGS 2-m Bathy/Topo Process_Date: 2015 Process_Step: Process_Description: Integrated the 2004 COE soundings by first digitizing contours from the soundings. Next the soundings and contours were interpolated to raster using the Topo to Raster module in ArcGIS. Source_Used_Citation_Abbreviation: 2004 Corp Deep Water Ship Channel Process_Date: 2015 Process_Step: Process_Description: USGS Sac River Multibeam -resampled to 10 meters Source_Used_Citation_Abbreviation: USGS Sac River Mulitbeam Process_Date: 2016 Process_Step: Process_Description: Mildred Island: -digitized contours based on soundings -created DEM of Mildred Island using ArcGIS topo to raster of soundings and contours Source_Used_Citation_Abbreviation: Mildred Island Process_Date: 2015 Process_Step: Process_Description: ULEP -resampled data to 10-m Source_Used_Citation_Abbreviation: ULEP Process_Date: 2016 Process_Step: Process_Description: CVFED Lidar -mosaiced required tiles -removed areas of standing water -resampled to 10-meters Source_Used_Citation_Abbreviation: CVFED Lidar Process_Date: 2016 Process_Step: Process_Description: American River Comp Study Data came as tin data set with ~meter resolution converted to Raster grid of 1-meter, then resampled to 10-meter resolution Source_Used_Citation_Abbreviation: American River Comp Study Process_Date: 2016 Process_Step: Process_Description: All data sets mosaicked to one DEM using the Mosaic to new Raster tool and blend function for overlapping data. Source_Used_Citation_Abbreviation: DWR DEM, 2004 Corp Deep Water Ship Channel, American River Comp Study, USGS Sac River Multibeam, USGS 2-m Bathy/Topo, Mildred Island, ULEP, CVFED Lidar Process_Date: 2016 Process_Step: Process_Description: Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Process_Date: 20201019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Performed minor edits to the metadata to correct typos. No data were changed Process_Date: 20211014 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Susan A. Cochran Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 11850 Column_Count: 9445 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Transverse Mercator Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 10.0 Ordinate_Resolution: 10.0 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: NAD_1983_UTM_Zone_10N Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum 1988 Altitude_Resolution: 1.0 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: ascii file Entity_Type_Definition: Ascii file containing elevation data associated with the digital elevation model (DEM). Cells with values of -9999 in the ascii file indicate no data. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Value Attribute_Definition: Elevation relative to NAVD88 meters Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -42.720001220703 Range_Domain_Maximum: 294.91000366211 Attribute_Units_of_Measure: meters Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: U.S. Geological Survey - Science Base Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: DEM data are available in a space-delimited ASCII text file (SFBayDeltaDEM10m2016.asc), along with an associated projection file (SFBayDeltaDEM10m2016.prj), browse graphic (SFBayDeltaDEM10m2016.jpg), and FGDC-compliant metadata (SFBayDeltaDEM10m2016.xml) Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASCII Format_Version_Number: ArcGIS 10.1 Format_Specification: Esri ARC/INFO ASCII GRID Format_Information_Content: Esri space-delimited ASCII raster file containing 10-m resolution digital elevation model of the Sacramento-San Joaquin Delta File_Decompression_Technique: none Transfer_Size: 625.38 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/58599681e4b01224f329b484 Network_Resource_Name: http://dx.doi.org/10.5066/F7GH9G27 Fees: None. Metadata_Reference_Information: Metadata_Date: 20211014 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998