Area Inundated by Mean Higher High Water, 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: 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

Originator: Pablo Herrera

Title: Area Inundated by Mean Higher High Water, 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

Publication_Information:

Publication_Place: Oakland CA

Publisher: Pacific Institute

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

Description:

Abstract:

The polygon represents the extent of inundation due to Mean Higher High Water (MHHW), after a 1.4 meter sea-level rise (scenario for year 2100), for the California coast (excluding the San Francisco Bay). The current inundation due to MHHW was based on NOAA tide stations elevation data (mhhw_2000 raster), to which 140 centimeters were added to the Z-value to generate this data.

Purpose:

The polygon layer was created for estimating the migration potential for wetlands as the area inundated due to MHHW changes along the California coast.

Supplemental_Information:

The dataset covers the California coast with the exception of the San Francisco Bay which is covered in the layers created by Noah Knowles of USGS/SCRIPPS. The link for San Francisco Bay inundation is: <http://cascade.wr.usgs.gov>.
Due to data limitations, areas of Santa Barbara, Los Angeles and Orange counties were unable to be mapped. The breakdown of mappable area for those counties is: 49% of Santa Barbara County, 23% of Los Angeles County, and 65% of Orange County.
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:

MHHW data represents the mean over a tidal epoch- epoch dates vary depening on the tide station

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: -124.540400

East_Bounding_Coordinate: -116.596022

North_Bounding_Coordinate: 42.120914

South_Bounding_Coordinate: 32.461891

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: inundation

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:

Source_Currentness_Reference: publication date

Source_Citation:

Citation_Information:

Originator: Pacific Institute

Publication_Time: 2008

Title: mhhw_2100

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

Process_Step:

Process_Description:

Using the Spatial Analyst extension, the 'Less than or equal to' tool was used in a python script to loop through all DEM datasets. The cells in the DEM that were less than or equal to the value in the mhhw_2100 raster were given a gidcode of '1' (true) all other land was coded '0'.

Process_Date: 01/2009

Process_Step:

Process_Description:

Majority filter was run on the raster to clean edges and remove very small (1-2) pixel ponds from the raster.

Process_Date: 01/2009

Process_Step:

Process_Description: Convert raster to vector polygon (no simplification).

Process_Date: 01/2009

Process_Step:

Process_Date: 01/2009

Process_Description: Merge all polygons together into one layer.

Process_Step:

Process_Description:

All small ponds less than 500 square meters were merged with surrounding area, therefore if small "island," convert to water, if small "pond," convert to land.

Process_Date: 01/2009

Process_Step:

Process_Description:

Created buffer to select all ponds within 50 meters of main water body. repeat this step until no new polygons selected. Effectively removes isolated "flooded" polygons from shapefile.

Process_Date: 01/2009

Source_Information:

Source_Citation:

Citation_Information:

Originator: Pacific Institute

Title: Digital Elevation Models

Online_Linkage: Available upon request

Logical_Consistency_Report: The dataset is topologically correct.

Completeness_Report: Data set has been visually inspected.

Attribute_Accuracy:

Attribute_Accuracy_Report:

Polygons indicate that land beneath the polygon has a lower elevation than the mhhw_2100 raster layer.
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).

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: 18.337

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: G-polygon

Point_and_Vector_Object_Count: 2176

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

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Standard_Parallel: 34.000000

Standard_Parallel: 40.500000

Longitude_of_Central_Meridian: -120.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 0.000000

False_Northing: -4000000.000000

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: mhhw_2100

Attribute:

Attribute_Label: Shape_Leng

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: Shape_Area

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.