San Francisco High Tide Elevations

Metadata:

• Identification_Information
• Data_Quality_Information
• Metadata_Reference_Information
• Distribution_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information

Identification_Information:

Citation:

Citation_Information:

Online_Linkage: <http://www.pacinst.org/reports/sea_level_rise>

Originator: Matthew Heberger

Publication_Date: 2009

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publisher: Pacific Institute

Publication_Place: Oakland CA

Series_Information:

Series_Name: The Impacts of Sea-Level Rise on the California Coast

Title: San Francisco High Tide Elevations

Originator: Pablo Herrera

Larger_Work_Citation:

Citation_Information:

Originator: Matthew Heberger

Originator: Heather Cooley

Originator: Peter Gleick

Originator: Pablo Herrera

Publication_Date: 2009

Title: The Impacts of Sea-Level Rise on the California Coast

Publication_Information:

Publication_Place: Oakland CA

Publisher: Pacific Institute

Online_Linkage: <http://www.pacinst.org/reports/sea_level_rise>

Description:

Abstract:

The points depicted are attributed the highest estimated 100-year tide elevation for locations surrounding the San Francisco Bay.

Purpose:

Depict the estimated 100-year highest tide elevations for the San Francisco Bay.

Supplemental_Information:

Data was derived from the US Army Corps of Engineers' 1984 publication, San Francisco Bay Tidal Stage vs. Frequency Study.

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500

Time_Period_of_Content:

Currentness_Reference: Study has not been updated

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1984

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.506290

East_Bounding_Coordinate: -121.943464

North_Bounding_Coordinate: 38.154828

South_Bounding_Coordinate: 37.429534

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: climate change

Theme_Keyword: sea level rise

Theme_Keyword: coastal flood

Theme_Keyword: 100 year coastal flood

Theme_Keyword: oceans and coastal

Theme_Keyword: 100 year flood

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: United States of America

Place_Keyword: California

Place_Keyword: San Francisco Bay

Access_Constraints:

None. Data are freely downloadable and available for use in GIS and mapping subject the use constraints below.

Use_Constraints:

The data are freely redistributable with proper metadata and source attribution. Please reference the Pacific Institute as the originator of the dataset in any future products or research derived from these data. This information is being made available for informational purposes only. Users of this information agree by their use to hold blameless the State of California, and its respective officers, employees, agents, contractors, and subcontractors for any liability associated with its use in any form. This work shall not be used to assess actual coastal hazards, insurance requirements, or property values and specifically shall not be used in lieu of Flood Insurance Studies and Flood Insurance Rate Maps issued by the Federal Emergency Management Agency (FEMA).

Security_Information:

Security_Classification: Level 1: Public

Security_Handling_Description:

Public data is accessible to all requester categories, including the General Public, with limited to no restrictions.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Pacific Institute

Contact_Person: Matthew Heberger

Contact_Position: Research Associate/GIS Manager

Contact_Address:

Address_Type: mailing address

Address: 654 13th Street

City: Oakland

State_or_Province: CA

Postal_Code: 94612

Country: USA

Address: Preservation Park

Contact_Voice_Telephone: (510) 251-1600

Contact_Facsimile_Telephone: (510) 251-2203

Contact_Electronic_Mail_Address: mheberger@pacinst.org

Hours_of_Service: 9:00 AM to 5:00 PM

Cross_Reference:

Citation_Information:

Publication_Information:

Larger_Work_Citation:

Citation_Information:

Series_Information:

Publication_Information:

Series_Information:

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description:

Locations of tide stations and associated data were digitized from paper maps to shapefiles using heads-up-digitizing. Original data was provided on USGS 1:24,000 paper topo maps and created in a shapefile over DRG topo maps at the same extent

Time_of_Day: 10222000

Process_Date: 6/2008

Process_Step:

Process_Description:

Point ID and NGVD 29 elevations were input into an excel spreadsheet. Elevation values were converted to meters.

Time_of_Day: 10231200

Process_Date: 6/2008

Source_Information:

Type_of_Source_Media: ESRI shapefile

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1984

Source_Currentness_Reference:

Digital format created at time of publication, data based on 1984 report

Source_Citation:

Citation_Information:

Originator: United States Army Corps of Engineers

Publication_Date: 1984

Title: San Francisco Bay Tidal Stage vs. Frequency Study.

Geospatial_Data_Presentation_Form: paper map

Publication_Information:

Publication_Place: San Francisco, Ca

Process_Step:

Process_Description:

The shapefile and Excel spreadsheet were joined based on point ID and exported to a new shapefile.

Time_of_Day: 12013100

Process_Step:

Process_Description:

Elevation values were then converted from NGVD 29 to NAVD 88 using the Vertcon program.

Time_of_Day: 16050600

Process_Date: 6/2008

Logical_Consistency_Report: The dataset is topologically correct.

Completeness_Report: Data set has been visually inspected.

Attribute_Accuracy:

Attribute_Accuracy_Report:

Elevations for 100-yr flood are based on results from 1984 USACE report. See report for accuracy of elevations. Data was converted from NGVD29 feet to NGVD29 meters, then to NAVD88 meters using the Vertcon tool.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Locations of points are approximate. Locations were digitized based on paper versions of USGS 1:24,000 7.5 minute topo maps and located on DRG versions of the USGS topo maps at the same resolution.

Metadata_Reference_Information:

Metadata_Date: 20090226

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Person: Matthew Heberger

Contact_Organization: Pacific Institute

Contact_Address:

Address_Type: mailing

City: Oakland

State_or_Province: CA

Postal_Code: 94612

Address:

654 13th Street, Preservation Park

Country: USA

Contact_Voice_Telephone: (510) 251-1600

Contact_Position: Research Associate/GIS Manager

Contact_Facsimile_Telephone: (510) 251-2203

Contact_Electronic_Mail_Address: mheberger@pacinst.org

Hours_of_Service: 9:00 AM to 5:00 PM

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile

Distribution_Information:

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ESRI data format, dependent upon request

Format_Specification: Files are zipped using the 7zip software.

Transfer_Size: 0.001

Fees: None

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Pacific Institute

Contact_Person: Matthew Heberger

Contact_Position: Research Associate/GIS Manager

Contact_Address:

Address_Type: mailing

Address:

654 13th Street, Preservation Park

City: Oakland

State_or_Province: CA

Postal_Code: 94612

Country: USA

Contact_Voice_Telephone: (510) 251-1600

Contact_Facsimile_Telephone: (510) 251-2203

Contact_Electronic_Mail_Address: mheberger@pacinst.org

Hours_of_Service: 9:00 AM to 5:00 PM

Distribution_Liability:

The data are freely redistributable with proper metadata and source attribution. Please reference the Pacific Institute as the originator of the dataset in any future products or research derived from these data. This information is being made available for informational purposes only. Users of this information agree by their use to hold blameless the State of California, and its respective officers, employees, agents, contractors, and subcontractors for any liability associated with its use in any form. This work shall not be used to assess actual coastal hazards, insurance requirements, or property values and specifically shall not be used in lieu of Flood Insurance Studies and Flood Insurance Rate Maps issued by the Federal Emergency Management Agency (FEMA).

Technical_Prerequisites:

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.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 52

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Planar_Distance_Units: meters

Coordinate_Representation:

Abscissa_Resolution: 0.000000

Ordinate_Resolution: 0.000000

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

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

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988

Altitude_Distance_Units: meters

Altitude_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: sf_high_tide_elev

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: INDEX_NO

Attribute_Definition:

index filed created for each tide station where data was collected

Attribute:

Attribute_Label: FT_NGVD29

Attribute_Definition:

Original values supplied by USACE study in vertical datum of NGVD29, feet.

Attribute_Value_Accuracy_Information:

Attribute_Value_Accuracy: See USACE report

Attribute:

Attribute_Label: M_NAVD88

Attribute_Definition:

Elevation value after converting feet to meters and NGVD29 to NAVD88 using the Vertcon tool.