Metadata: Identification_Information: Citation: Citation_Information: Originator: Amy C. Foxgrover Originator: Patrick L. Barnard Publication_Date: 2012 Title: Input Data Boundary Outlines for DEMs of the North-Central California Coast (DEM_source_data.shp) Edition: Version 1.0 Geospatial_Data_Presentation_Form: polygon shapefile Larger_Work_Citation: Citation_Information: Originator: Amy C. Foxgrover Originator: Patrick L. Barnard Publication_Date: 2012 Title: A Seamless, High-Resolution Digital Elevation Model (DEM) of the North-Central California Coast Edition: Version 1.0 Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: Data Series 684 Online_Linkage: https://doi.org/10.3133/ds684 Description: Abstract: A GIS polygon shapefile outlining the boundaries of the native input datasets used to construct a seamless, 2-meter resolution digital elevation model (DEM) was constructed for the open-coast region of the San Francisco Bay Area (outside of the Golden Gate Bridge), extending from Half Moon Bay to Bodega Head along the North-central California coastline. The goal was to integrate the most recent high-resolution bathymetric and topographic datasets available (for example, Light Detection and Ranging (lidar) topography, multibeam and single-beam sonar bathymetry) into a seamless surface model extending offshore at least 3 nautical miles and inland beyond the +20 m elevation contour. Purpose: This DEM data set was constructed to provide critical model boundary conditions (bathymetry and topography) necessary to predict the impacts of severe winter storms and sea level rise along this stretch of coast, using the Coastal Storm Modeling System (CoSMoS). This process based modeling system was first applied along the coast of Southern California (Barnard and others, 2009). CoSMoS can be run in real-time or with prescribed scenarios, incorporating atmospheric forcing information (wind and pressure fields) with a suite of state-of-the-art physical process models (WaveWatch3, SWAN, XBeach, Delft3D) to enable detailed prediction of water levels, run-up, wave heights, and currents, ultimately predicting the spatial distribution of coastal flooding, inundation, erosion, and cliff failure. The DEM was constructed to define the general shape of the nearshore, beach and cliff surfaces as accurately as possible, with less emphasis on the detailed variations in elevation inland of the coast and on bathymetry inside harbors. As a result this DEM should not be used for navigation purposes. Supplemental_Information: Additional information about the USGS field activities from which some of these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=o1209ca 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 Federal Geographic Data Committee-compliant metadata file is intended to document the dataset in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1984 Ending_Date: 2011 Currentness_Reference: topography at time underlying dataset was collected (See Source Information) Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.158145 East_Bounding_Coordinate: -122.393965 North_Bounding_Coordinate: 38.352385 South_Bounding_Coordinate: 37.407828 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:40f91241-71e0-48ce-baf6-2584979ca058 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: coastal Theme_Keyword: beaches Theme_Keyword: ocean Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: bathymetry Theme_Keyword: bathymetry measurement Theme_Keyword: sea-floor characteristics Theme_Keyword: geospatial datasets Theme_Keyword: digital elevation models Theme_Keyword: hazards Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: BATHYMETRY Theme_Keyword: SEAFLOOR TOPOGRAPHY Theme_Keyword: Light Detection and Ranging Theme_Keyword: Multibeam Swath Bathymetry System Theme_Keyword: Digital Elevation Model Place: Place_Keyword_Thesaurus: None Place_Keyword: Central California Place_Keyword: California Place_Keyword: USA Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Half Moon Bay Place_Keyword: Pacifica Place_Keyword: Daly City Place_Keyword: Bolinas Place_Keyword: Palomarin Beach Place_Keyword: Wildcat Beach Place_Keyword: Drakes Bay Place_Keyword: Point Reyes Place_Keyword: Point Reyes Beach Place_Keyword: Abbotts Lagoon Place_Keyword: San Francisco Bay Place_Keyword: Tomales Point Place_Keyword: Tomales Bay Place_Keyword: Bodega Bay Place_Keyword: San Mateo County Place_Keyword: San Francisco County Place_Keyword: Marin County Place_Keyword: Sonoma County Place_Keyword: State of California Place: Place_Keyword_Thesaurus: GEOnet Names Server Place_Keyword: North Pacific Ocean Access_Constraints: None Use_Constraints: Majority of data (that is, lidar, multibeam bathymetry) derived from topographic/bathymetry data collected at 1-2 m horizontal resolution, with vertical uncertainty at time of data collection ranging from 10 cm to 1 m. Use at greater scales not advised. See full Data Series report for more information: Foxgrover, A.C., and Barnard, P.L., 2012, A seamless, high-resolution digital elevation model (DEM) of the north-central California coast: U.S. Geological Survey Data Series 684, 11 p. and datasets, available at https://doi.org/10.3133/ds684/. 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 Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Data_Set_Credit: California State University, Monterey Bay (CSUMB) and Fugro Pelagos, Inc., for California State Waters Mapping Project (CSWMP) from Pat Iampietro; Pillar Point Harbor from Anne Sturm (U.S. Army Corps of Engineers); National Geophysical Data Center (NGDC); National Oceanic and Atmospheric Administration (NOAA); Marin County from Brian Quinn (County of Marin GIS Division of Community Development Agency); Bolinas Lagoon from Matt Brennan (ESA-PWA); Carignan, K.S., Taylor, L.A., Eakins, B.W., Caldwell, R.J., Friday, D.Z., Grothe, P.R., and Lim, E., 2011, Digital elevation models of central California and San Francisco Bay: Procedures, data sources and analysis: NOAA Technical Memorandum NESDIS NGDC-52, 49 p. and datasets, available at http://www.ngdc.noaa.gov/dem/squareCellGrid/download/741 Native_Data_Set_Environment: Microsoft Windows 7 enterprise; ESRI ArcCatalog 10.0, Build 3600, Service Pack 3 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Refer to the DEM Accuracy and Limitations section in this Data Series for an explanation of the accuracy of the identification of the entities and assignments of values in the dataset and a description of the tests used. Logical_Consistency_Report: Refer to the DEM Construction Methods section in this Data Series for an explanation of the fidelity of relationships in the dataset and tests used. Completeness_Report: Refer to the DEM Construction Methods section in this Data Series for information about omissions, selection criteria, generalization, definitions used, and other rules used to derive the dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Refer to the DEM Accuracy and Limitations section in this Data Series for an explanation of the accuracy of the horizontal coordinate measurements and a description of the tests used. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Refer to the DEM Accuracy and Limitations section in this Data Series for an explanation of the accuracy of the vertical coordinate measurements and a description of the tests used. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: California State University, Monterey Bay Publication_Date: Unknown Title: Multibeam bathymetry Other_Citation_Details: contact: Pat Iampietro Online_Linkage: http://seafloor.csumb.edu/SFMLwebDATA.htm Type_of_Source_Media: digital data - raster grids or ascii xyz text files Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2006 Ending_Date: 2010 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: CSUMB Source_Contribution: Provided multibeam bathymetry for entire offshore study area. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, lidar acquired by Terrapoint Publication_Date: Unknown Title: ARRA-CA_SanFranCoast_2010 lidar Other_Citation_Details: contact: Carol Ostergren Online_Linkage: http://lidar.cr.usgs.gov/ Type_of_Source_Media: digital data - raster grids Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 201006 Ending_Date: 201011 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Source_Contribution: Provided topographic lidar data for coastal region (to approximately +10 m elevation contour) for stretch of coast from Point Reyes to Point San Pedro Source_Information: Source_Citation: Citation_Information: Originator: San Francisco State University, lidar acquired by Earth Eye Publication_Date: Unknown Title: Golden Gate Lidar Project Other_Citation_Details: contact: Ellen Hines Type_of_Source_Media: digital data - raster grids or ascii xyz text files Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 201004 Ending_Date: 201007 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: SFSU Source_Contribution: Provided topographic lidar data for Marin County, San Francisco County, and portions of San Mateo and Sonoma counties. Source_Information: Source_Citation: Citation_Information: Originator: California State Ocean Protection Council Publication_Date: Unknown Title: 2010 Coastal CA Lidar, Delivery Area 3 Other_Citation_Details: contact: Sheila Semans Type_of_Source_Media: digital data - raster grids Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 201009 Ending_Date: 201012 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: OPC Source_Contribution: Provided topographic lidar data in the vicinity of Bodega Bay and the southernmost region of Half Moon Bay (areas not covered by USGS or SFSU 2010 lidar) Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Geophysical Data Center Publication_Date: 2011 Title: Digital elevation models of central California and San Francisco Bay: Procedures, data sources and analysis. NOAA Technical Memorandum NESDIS NGDC-52 Online_Linkage: http://www.ngdc.noaa.gov/dem/squareCellGrid/download/741 Type_of_Source_Media: digital data - raster grids Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1922 Ending_Date: 2009 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NGDC Source_Contribution: Provided data for entire study area. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers Publication_Date: Unknown Title: Pillar Point Harbor survey Type_of_Source_Media: digital data - terrain dataset Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200909 Ending_Date: 200910 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USACE Source_Contribution: Provided bathy/topo DEM of Pillar Point Harbor Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2008 Title: Interferometric Sidescan Bathymetry, Sediment and Foraminiferal Analyses; a New Look at Tomales Bay, California Other_Citation_Details: USGS OFR 2008-1237 Type_of_Source_Media: digital data - raster grids Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200411 Ending_Date: 200608 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Source_Contribution: Provided bathymetry data for Tomales Bay Source_Information: Source_Citation: Citation_Information: Originator: GIS Division of Community Development Agency County of Marin Publication_Date: unknown Title: Marin County Terrain Dataset Other_Citation_Details: contact: Brian Quinn Type_of_Source_Media: digital data - raster terrain datasets Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1931 Ending_Date: 2011 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: none Source_Contribution: Provided bathy/topo terrain dataset for Marin County Source_Information: Source_Citation: Citation_Information: Originator: Environmental Science Associates, Philip Williams and Associates Publication_Date: Unknown Title: Bolinas Lagoon Bathymetry Other_Citation_Details: contact: Matt Brennan Type_of_Source_Media: digital data - raster grids Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: ESA PWA Source_Contribution: Provided bathymetry for Bolinas Lagoon Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unknown Title: O-12-09-CA Other_Citation_Details: contact: Dan Hoover Online_Linkage: https://cmgds.marine.usgs.gov/fan_info.php?fan=o1209ca Type_of_Source_Media: digital data - TIN converted to a raster Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 200911 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Source_Contribution: Provided data from Ocean Beach, San Francisco ATV/PWC survey Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1991 Title: Pollution Studies of Drakes Estero, and Abbotts Lagoon Point Reyes National Seashore, California, USA Online_Linkage: http://pubs.usgs.gov/of/1991/0145/report.pdf Type_of_Source_Media: map - bathymetry contours Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1984 Ending_Date: 1986 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS Source_Contribution: Provided bathymetry for Drakes Estero Process_Step: Process_Description: (Summary) Performed by Amy Foxgrover and Patrick Barnard: ArcGIS was the primary software used for DEM construction. For each individual DEM, the native datasets were mosaicked into a single grid to preserve the original surfaces as closely as possible. Prior to mosaicking, datasets were gridded and (or) resampled to 2 m resolution (if necessary), and their spatial extents modified according to the following guidelines: 1. Data sets of comparable quality (for example, overlapping multibeam data), collected over the same time period were not clipped. In these instances the overlapping regions were blended together using the "Blend" algorithm in the Mosaic to New Raster tool in Arc Toolbox. The exception to this is for topographic data along the shoreline. Multiple high-resolution aerial lidar surveys were collected along the shoreline in 2010. Since the nearshore is a very dynamic region that can be modified greatly by a single storm event, rather than blending multiple high-resolution datasets (which could produce unrealistic beach morphology), data from a single time period were selected for use. Where possible, we used data collected in the fall for nearshore elevations to minimize the potential of winter storm effects. 2. In overlapping regions where the quality of one dataset was clearly inferior to the other (for example, regional 10-m resolution DEMs overlapping with 2-m resolution lidar), the spatial extent of the inferior data set was clipped so there was minimal overlap, typically about ~20 m, with the superior dataset. The overlapping regions then were smoothed together using the Blend algorithm. This range of overlap was found to be the most efficient for ensuring a smooth transition between datasets while minimizing the use of lower quality data. The spatial extent of each dataset used is included as a GIS shapefile. In addition, the areas of overlap were typically well outside of the dynamic coastal zone, which was typically covered by a single lidar pass, so any blending should have minimal impact for this important region. Process_Date: 2011 Process_Step: Process_Description: >(Detailed DEM Construction Procedures) Performed by Amy Foxgrover and Patrick Barnard: > >1. Divide study area into ~10 km alongshore segments > A. Define DEM coverage area/polygon that extends ~10 km alongshore, from 3 nautical > miles offshore inland beyond the +20 m topographic contour > B. Ensure that adjacent DEM coverage areas overlap by ~250 m >2. Acquire most recent or highest resolution data sets in DEM coverage areas > A. Lidar > B. Multibeam bathymetry > C. Local high-resolution beach topography (usually ATV-acquired) and nearshore bathymetry > (usually PWC-acquired). >3. Fill gaps with older/lower resolution datasets > A. Lower resolution DEMs - for example, NGDC's 10-m resolution tsunami inundation DEM, > (Carignan and others, 2011) in Bodega Harbor > B. Bathymetric data derived from single beam bathymetry - for example, 1980s survey in Drakes > Estero and 1998 bathymetry in Bolinas Lagoon >4. Convert all datasets into identical horizontal coordinate system, vertical datum, and grid resolution > A. Horizontal coordinate system: UTM NAD83 Zone 10 North > B. Vertical Datum: NAVD88 > I. If different [usually Mean Lower Low Water (MLLW)], convert using local NOAA tide station information > [http://tidesandcurrents.noaa.gov/ (last accessed December 12, 2011)] based on survey metadata > C. Grid resolution: 2 m > I. If already gridded at higher resolution(<2 m), resample to 2 m using bilinear interpolation > II. If already gridded at a lower resolution (> 2m), export as xyz file, reimport as xyz points, create TIN > (triangular irregular network), create 2-m grid from TIN using linear interpolation of the TIN triangles, > and clip to survey extent > III. Ungridded: > a) Lower resolution surveys (for example, PWC-collected bathymetry): create TIN from points then > convert to 2-m grid using linear interpolation of the TIN triangles >5. Clip datasets to DEM/coverage needs, if necessary > A. Useful for data management and processing efficiency > B. Necessary for very large data sets, such as county-wide lidar datasets (for example, Golden Gate Lidar Project data) > C. Remove ocean water surfaces and offshore rocky outcrops/islands > I. Aerial topographic lidar from 2010 was provided as bare-earth hydro-flattened DEMs. The breakline polygons provided > with aerial lidar data were used to generate 2-m resolution grids of water surfaces over the ocean or tidal embayments > where bathymetric data was to be inserted. Use this grid to mask out water surfaces in the topographic DEM using the > Set Null tool in Arc Toolbox. > II. Hydro-flattened surfaces of small inland water bodies were retained in the final DEM. Since these areas are of less > importance for this research, no attempt was made to obtain bathymetric depths for these inland ponds or lakes (for example, > Lake Merced in San Francisco). Hydro-flattened features that were retained in the final DEM are provided in shapefile format > at the end of this report. > III. Extract small islands and rocky outcrops from topographic lidar datasets using breaklines provided. These features are > not included in the nearshore interpolation, but are incorporated into the final DEM in step 8. >6. Manage overlapping datasets > A. Data sets were allowed to overlap extensively only if they are from the same time period, of comparable quality, and not within > the dynamic nearshore region, otherwise allow only minimal (~10-30 m) overlap to ensure smooth DEM transitions > B. Clip low-resolution data sets pushed to 2-m resolution, such as Personal Watercraft data and regional DEMs, to minimal overlap > with adjacent high-resolution data sets (usually multibeam and topographic lidar) > C. Clip topographic lidar so that only a single dataset is used for the coastal zone. Where it exists, the USGS lidar is given highest > preference in the nearshore zone because it was collected in the summer and fall of 2010 when the beach morphology was less likely to > influenced by winter storm events. The Golden Gate Lidar Project data are used for all reaches landward of the USGS lidar coverage (roughly > 10-m elevation and higher) and along the coastline where USGS lidar was not collected. The OPC lidar is present only in two small sections > that are not covered by USGS or GGLP lidar (within DEM sections 1 and 14). >7. Fill in data gaps between high-resolution datasets > A. If no high-resolution data are available between the offshore multibeam bathymetry and coastal topographic lidar in protected > harbors/embayments, or in other areas where interpolation from surrounding data sets will create a surface unlikely to reflect actual > bathymetry/topography accurately, fill in gaps with regional DEMs or other low-resolution data sets. Otherwise, interpolate across gaps. > I. Filling in harbors or embayments using regional DEMs/other low-resolution data: > a) Clip best available regional DEM or bathymetry to gap area, allowing only minimal overlap (~20 m) with adjacent high-resolution > data sets > b) Export clipped grid as xyz, reimport as points, create TIN, create 2-m grid from TIN, clip to gap extent > II. Interpolation across nearshore gaps: > a) Create preliminary DEM using Mosaic tool with the following settings: > Coordinate System: UTM Zone 10 North > Pixel Type: 32 Bit Float > Cell Size: 2 > Mosaic Method: Blend > Mosaic Color Map: Last > b) Create polygon of data gap(s) to fill within the preliminary DEM surface > c) Buffer the data gap polygon with a linear distance of 20 m using the Buffer tool in Arc Toolbox > d) Clip preliminary DEM using the buffered polygon, export clipped grid as xyz, reimport as points (fig. 3B), create TIN, create 2-m > grid from TIN, clip to buffered gap extent > III. Interpolation around perimeter of Bolinas Lagoon and Drakes Estero: > a) Fill any narrow gaps between bathymetry grids of Bolinas Lagoon and Drakes Estero and the nearest high resolution topography > using the same procedure as used above for interpolating across nearshore gaps. >8. Compile final DEMs > A. Load all datasets for DEM > B. Verify all significant data gaps filled (few missing cells OK) in DEM coverage area > C. Build interim DEM using Mosaic to New Raster tool in ArcGIS with same setting as noted above in Step 7 > D. Build final DEM using Mosaic to New Raster tool in ArcGIS. Input rasters are the above interim DEM and a grid of small islands or rocky > outcrops obtained from lidar. The islands are given top priority in the mosaicking algorithm so that island elevations from the lidar overwrite > elevations from the nearshore interpolation. > E. Clip output to DEM coverage area > F. Create contours and plot cross-shore profiles to verify data quality and consistency Process_Date: 2011 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: Edited metadata to add USGS Thesaurus keywords and perform minor edits to bring the metadata up to current PCMSC standards. No data were changed. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata dates to determine which metadata file is most recent. Process_Date: 20211020 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Susan 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: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 1023 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 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: > Polygon attributes > Data_type = type of data (bathymetry, lidar, etc.) > Date = date of data collection > Agency = agency that collected the data or commissioned its collection > Native_res = native horizontal resolution of the source data > Survey_ID = survey ID used in website or data report Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS) Contact_Person: Patrick L Barnard Contact_Position: Research Geologist Contact_Address: Address_Type: mailing and physical address Address: USGS, 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: (831) 460-7556 Contact_Electronic_Mail_Address: pbarnard@usgs.gov Resource_Description: U.S. Geological Survey Data Series 684 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: shapefile Format_Version_Number: 10.0 File_Decompression_Technique: windows winzip or unix gunzip Transfer_Size: 7.8 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.3133/ds684 Fees: none Metadata_Reference_Information: Metadata_Date: 20211020 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 Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA 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