Area Inundated by Mean Higher High Water, 2000

Metadata:

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, 2000
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) under current conditions (year 2000) based on NOAA tide stations tide elevation 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: 32.464390
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_2000
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_2000 raster were given a gridcode 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, in cascading fashion, until no new polygons are 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_2000 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: 17.512
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: 1480
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_2000
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.
Generated by mp version 2.9.6 on Thu Feb 26 11:46:34 2009