Coastal Base Flood Elevations, Ott Water Study

Metadata:

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

Identification_Information:

Citation:

Citation_Information:

Originator: Matthew Heberger

Originator: Pablo Herrera

Publication_Date: 2009

Title: Coastal Base Flood Elevations, Ott Water Study

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: 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>

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 flood elevations for the 10, 50, 100, and 500 year coastal flood events for various coastal communities in Northern California.

Purpose:

Depict the estimated coastal flood elevations for coastal communities in Northern California.

Supplemental_Information:

Data was derived from the Ott Water Engineers, Inc. (1984) Northern California Coastal Flood Studies, prepared for the Federal Emergency Management Agency.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1984

Currentness_Reference: Study has not been updated

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.219987

East_Bounding_Coordinate: -121.787860

North_Bounding_Coordinate: 41.750949

South_Bounding_Coordinate: 36.602254

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.

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

Address: 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

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.

Native_Data_Set_Environment:

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

Cross_Reference:

Citation_Information:

Series_Information:

Publication_Information:

Larger_Work_Citation:

Citation_Information:

Series_Information:

Publication_Information:

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

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

Logical_Consistency_Report: The dataset is topologically correct.

Completeness_Report: Data set has been visually inspected.

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.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Ott Water Engineers, Inc.

Publication_Date: 1984

Title:

Northern California Coastal Flood Studies, prepared for the Federal Emergency Management Agency.

Geospatial_Data_Presentation_Form: paper map

Publication_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

Process_Step:

Process_Description:

Using the USGS 7.5 minute topo maps, provided in the report, which had the study areas and transects drawn in, we used the heads-up-digitizing technique to draw the transect lines in a new shapefile over a DRG of the USGS 7.5 minute maps.

Process_Date: 6/2008

Process_Step:

Process_Description:

The polyline to point tool in ETGeoWizards was then used to extract the midpoint of the transect lines.

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.

Process_Date: 6/2008

Process_Step:

Process_Description:

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

Process_Date: 6/2008

Process_Step:

Process_Description:

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

Process_Date: 6/2008

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: 59

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Geographic_Coordinate_Units: Decimal degrees

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: Ott_water_flood_elev

Attribute:

Attribute_Label: NGVD_500yr

Attribute_Definition: 500 year flood elevation NGVD29 (feet)

Attribute:

Attribute_Label: LOCATION

Attribute:

Attribute_Label: NGVD_10YR

Attribute:

Attribute_Label: NGVD_50YR

Attribute:

Attribute_Label: NGVD_100YR

Attribute:

Attribute_Label: NGVD_500YR

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: Location

Attribute_Definition: Location of transect

Attribute:

Attribute_Label: NGVD_100yr

Attribute_Definition: 100 year flood elevation NGVD29 (feet)

Attribute:

Attribute_Label: NGVD_10_M

Attribute:

Attribute_Label: NGVD_50_M

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: NGVD_100_M

Attribute:

Attribute_Label: NGVD_500_M

Attribute:

Attribute_Label: NAVD_10YR

Attribute:

Attribute_Label: NAVD_50YR

Attribute:

Attribute_Label: NAVD_100YR

Attribute:

Attribute_Label: NAVD_500YR

Attribute:

Attribute_Label: NAVD_100_F

Distribution_Information:

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

Resource_Description: Downloadable Data

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).

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: 0.002

Fees: None

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.

Metadata_Reference_Information:

Metadata_Date: 20090226

Metadata_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:

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

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

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

Profile_Name: ESRI Metadata Profile