Mean Higher High Water Surface, 2100

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: raster 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

Originator: Pablo Herrera

Title: Mean Higher High Water Surface, 2100

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

Series_Information:

Publication_Information:

Publication_Place: Oakland CA

Publisher: Pacific Institute

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

Description:

Abstract:

This raster file represents an interpolated surface of the Mean Higher High Water (MHHW), after a 1.4 meter sea-level rise (scenario for year 2100), for the entire California coastline (excluding the San Francisco Bay). The base raster (mhhw_2000) is interpolated from data for 12 NOAA tide stations along the coast. This raster added 140 centimeters to the mhhw_2000 raster.

Purpose:

To generate a coastline that shows the MHHW line, after a 1.4 meter sea-level rise, to view the extent of land that could be inundated on a near daily basis but not permananently inundated.

Supplemental_Information:

The station locations and tide data for all NOAA operated tide stations is available from NOAA in non-spatial format from the website: <http://tidesandcurrents.noaa.gov/station_retrieve.shtml?type=Tide+Data>

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:

Time span of tidal measurements varies by station, elevations are for a future scenario (year 2100)

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2008

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.830192

East_Bounding_Coordinate: -115.912902

North_Bounding_Coordinate: 42.198953

South_Bounding_Coordinate: 32.315324

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

Theme_Keyword: Mean Higher High Water

Theme_Keyword: MHHW

Theme_Keyword: future scenario

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:

Source_Information:

Type_of_Source_Media: ESRI shapefile

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2008

Source_Currentness_Reference: Time span of tidal measurements varies by station

Source_Citation:

Citation_Information:

Originator: NOAA

Title: NOAA Tide Stations

Online_Linkage:

<http://tidesandcurrents.noaa.gov/station_retrieve.shtml?type=Tide+Data>

Process_Step:

Process_Description:

A buffer was created around the California coastline of 10 kilometers

Process_Step:

Process_Description:

Elevation data (attributes as Z-values) for the CA_Tide_Stations.shp were converted from floating point (meters) to integer (centimeters) to speed processing time and minimize storage space.

Process_Step:

Process_Description:

Using the buffered coastline polygon as a mask (limiting extent of raster), the "surface" of MHHW elevation was interpolated between the tide stations (CA_Tide_Stations.shp) using the Inverse Distance Weighting tool, with a power of 1. The elevation value was derived from the attribute of MHHW as a Z-value (NAVD88 centimeters)

Process_Step:

Process_Description:

Using raster math, a value of 140 centimeters was added uniformely to all cells in the mhhw_2000 raster.

Time_of_Day: 10281200

Logical_Consistency_Report: The dataset is topologically correct.

Completeness_Report: Data set has been visually inspected.

Attribute_Accuracy:

Attribute_Accuracy_Report:

The tide station data is derived directly from the NOAA tide information available online at: <http://tidesandcurrents.noaa.gov/station_retrieve.shtml?type=Tide+Data>. For attribute accuracy refer to the website.
The interpolated surface is derived from computer automated processes and tidal elevations may vary depending on location. No ground-truth was carried out nor were oceanographers or coastal engineers consulted.
The future sea-level rise is considered a possible scenario, but not a prediction. 1.4 meters is an estimate for a given scenario.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Locations of tide stations are provided in Decimal Degrees, which we projected into WGS 1984 using ArcGIS. These stations were used to interpolate the surface elevation of MHHW between stations

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The tide station data is derived directly from the NOAA tide information available online at: <http://tidesandcurrents.noaa.gov/station_retrieve.shtml?type=Tide+Data>. For vertical accuracy refer to the website.
The interpolated surface is derived from computer automated processes and tidal elevations may vary depending on location. No ground-truth was carried out nor were oceanographers or coastal engineers consulted.
The future sea-level rise is considered a possible scenario, but not a prediction. 1.4 meters is an estimate for a given scenario.

Quantitative_Vertical_Positional_Accuracy_Assessment:

Vertical_Positional_Accuracy_Value: elevation is in centimeters (NAVD88 datum)

Metadata_Reference_Information:

Metadata_Date: 20090224

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: 0.165

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: Raster

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 52

Raster_Object_Information:

Raster_Object_Type: Grid Cell

Row_Count: 2199

Column_Count: 1984

Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

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

Geographic:

Geographic_Coordinate_Units: Decimal degrees

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Planar:

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 0.004495

Ordinate_Resolution: 0.004495

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: mhhw_2100.vat

Attribute:

Attribute_Label: Rowid

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: VALUE

Attribute_Definition: Elevation of year 2100 MHHW in centimeters

Attribute:

Attribute_Label: COUNT