San Francisco Bay Region Landslide Folio Part E - Map of debris-flow source areas in the San Francisco Bay region, California

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

Metadata:

Identification_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: R.C. Wilson
Originator: A.S. Jayko
Publication_Date: 1997
Title:

San Francisco Bay Region Landslide Folio Part E - Map of debris-flow source areas in the San Francisco Bay region, California

Geospatial_Data_Presentation_Form: map
Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 97-0745-F

Other_Citation_Details:

ARC/INFO vector COVERAGE format (<1MB for entire region) and raster GRID format (21MB). Plotfiles in PostScript also available.

Online_Linkage: http://pubs.usgs.gov/of/1997/of97-745/of97-745f.html

Description:

Abstract:

These maps show, for emergency service managers in the San Francisco Bay region, the threshold rainfall that may be capable of triggering a level of debris-flow activity likely to threaten public safety. The maps are products of a continuing series of studies that began after a catastrophic storm on January 3-5, 1982 triggered 18,000 debris flows in the San Francisco Bay region, causing 25 deaths and $66 million in property damage. The threshold rainfall values were estimated by re-evaluating a previous empirical analysis of data from the 1982 storm, and other historical rainfall records, that normalized the rainfall intensity data by dividing by the mean annual precipitation (MAP) of the corresponding rain gage. The present analysis also takes into account the rainfall frequency, the mean annual number of days with non-zero rainfall (#RDs), thereby adjusting for the difference in rainfall frequency between windward-facing slopes where rainfall is orographically enhanced and leeward-facing slopes and valleys that lie within rain shadows where precipitation is reduced. The debris-flow threshold maps were created by digitally combining an existing regional map of mean annual precipitation, a newly compiled data set of #RDs from an analysis of long-term (20-40 years) records of daily rainfall for 33 rain gages in the region, and the re-normalized thresholds from the empirical analysis of historical storm data.

Purpose:

The primary intended use of these maps is to facilitate response planning for debris-flow related emergencies. The maps are intended to be used in conjunction with the debris-flow susceptibility map developed by Ellen and Mark (1997) in this same series.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1997

Currentness_Reference: publication date

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -123.678
East_Bounding_Coordinate: -120.975
North_Bounding_Coordinate: 38.888
South_Bounding_Coordinate: 36.85

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geology
Theme_Keyword: geologic maps
Theme_Keyword: landslides
Theme_Keyword: surficial geologic units
Theme_Keyword: geologic history
Theme_Keyword: geospatial datasets

Theme:

Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
Theme_Keyword: 3400 - Graphical
Theme_Keyword: 3100 - Vector
Theme_Keyword: 3420 - PostScript
Theme_Keyword: 3110 - ESRI
Theme_Keyword: 3112 - export
Theme_Keyword: 3200 - Raster
Theme_Keyword: 1500 - Hazards
Theme_Keyword: 1503 - Landslides
Theme_Keyword: 3220 - Grid

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation

Place:

Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
Place_Keyword: f06001 = Alameda
Place_Keyword: f06013 = Contra Costa
Place_Keyword: f06041 = Marin
Place_Keyword: f06055 = Napa
Place_Keyword: f06085 = Santa Clara
Place_Keyword: f06087 = Santa Cruz
Place_Keyword: f06075 = San Francisco
Place_Keyword: f06081 = San Mateo
Place_Keyword: f06095 = Solano
Place_Keyword: f06097 = Sonoma

Access_Constraints: none
Use_Constraints: none
Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jayko, Angela S
Contact_Organization: USGS-GEO-WRG-NGM

Contact_Address:

Address_Type: mailing and physical address
Address:

Mail Stop 975, USGS
345 Middlefield Road

City: Menlo Park
State_or_Province: CA
Postal_Code: 94025
Country: US

Contact_Voice_Telephone: 650-329-4926
Contact_Electronic_Mail_Address: ajayko@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: http://pubs.usgs.gov/of/1997/of97-745/sfbr-rt6.pdf
Browse_Graphic_File_Description:

PDF representation of the map of 6-hour rainfall thresholds (1.1 megabytes)

Browse_Graphic_File_Type: PDF

Data_Set_Credit:

We thank Todd Fitzgibbon for digital review, and Russ Graymer and Scott Graham for cartographic assistance.

Native_Data_Set_Environment: ARC/INFO version 7.0.4

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

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: complete chain

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 10
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -123
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: unknown
Ordinate_Resolution: unknown

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: SFBR-RT24C.AAT
Entity_Type_Definition: 24 hour rainfall threshold value
Entity_Type_Definition_Source: OFR-97-0745-F

Attribute:

Attribute_Label: COUNTOUR
Attribute_Definition: Contour of rainfall threshold
Attribute_Definition_Source: OFR-97-0745-F
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2.000
Range_Domain_Maximum: 10.500
Attribute_Units_of_Measure: inches
Attribute_Measurement_Resolution: 0.001

Detailed_Description:

Entity_Type:

Entity_Type_Label: SFBR-RT6C.AAT
Entity_Type_Definition: 6 hour rainfall threshold value
Entity_Type_Definition_Source: OFR-97-0745-F

Attribute:

Attribute_Label: COUNTOUR
Attribute_Definition: Contour of rainfall threshold
Attribute_Definition_Source: OFR-97-0745-F
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.000
Range_Domain_Maximum: 6.000
Attribute_Units_of_Measure: inches
Attribute_Measurement_Resolution: 0.001

Detailed_Description:

Entity_Type:

Entity_Type_Label: SFBR-RTG.PAT
Entity_Type_Definition:

Point coverage showing rain gage locations, station identifier, average number of rainy days, and mean annual precipitation

Entity_Type_Definition_Source: OFR-97-745-F

Attribute:

Attribute_Label: LOCATION
Attribute_Definition: Feature name
Attribute_Definition_Source: OFR-97-745-F
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Santa Cruz

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ben Lomond 4

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Antioch

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Berkeley

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Black Mnt 2WSW

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Calaveras Res.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Half Moon Bay

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Hamilton AFB

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Kentfield

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: La Honda

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Livermore

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Los Gatos

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Los Gatos 4SW

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Morgan Hill 2E

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Mt. Diablo Jnct.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Mt. Hamilton

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Muir Woods

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Newark

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Oakland AP

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Occidental

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Pacifica

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Petaluma Fire Stn

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Redwood City

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Richmond

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SF Mission Dol.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SFO

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: San Gregorio

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: San Jose

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: San RAfael Cif-Ctr

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Up S Leandro Flt

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Walnut Creek 2ESE

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Woodside F.S.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Wrights

Attribute:

Attribute_Label: RAINDAYS
Attribute_Definition: Mean annual number of rainy days
Attribute_Definition_Source: OFR-97-0745-F
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 64.1
Range_Domain_Maximum: 95.0
Attribute_Units_of_Measure: days
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: MAP
Attribute_Definition: Mean Annual Precipitation
Attribute_Definition_Source: OFR-97-745-F
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 12.38
Range_Domain_Maximum: 56.25
Attribute_Units_of_Measure: inches
Attribute_Measurement_Resolution: 0.01

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USGS Information Services

Contact_Address:

Address_Type: mailing
Address: Box 25286, Denver Federal Center
City: Denver
State_or_Province: Colorado
Postal_Code: 80255-0046
Country: USA

Contact_Voice_Telephone: 1-888-ASK-USGS
Contact_Facsimile_Telephone: 1-303-202-4695
Contact_Electronic_Mail_Address: infoservices@usgs.gov

Resource_Description: US Geological Survey Open-File Report 97-0745-F
Distribution_Liability:

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
This database, identified as "Preliminary Maps Showing Rainfall Thresholds for Debris-Flow Activity, San Francisco Bay Region, California," has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ARCE
Format_Version_Number: 7.x
Format_Information_Content:

ARC/INFO export file	Description of Coverage

sfbr-rt24c.e00		Line coverage showing contours of 24 hour rainfall threshold for debris flows.
sfbr-rt6c.e00		Line coverage showing contours of 6 hour rainfall threshold for debris flows.
sfbr-rtg.e00		Point coverage showing rain gage locations, station identifier, average number of rainy days, and mean annual precipitation.
sfbr-rta.e00		Point coverage showing the location of ALERT STATIONS and station identifiers

File_Decompression_Technique: gzip -d

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-745/sfbr-rta.e00.gz
Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-745/sfbr-rtg.e00.gz
Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-745/sfbr-rt6c.e00.gz
Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-745/sfbr-rt24c.e00.gz

Digital_Form:

Digital_Transfer_Information:

Format_Name: ArcInfo Grid
Format_Version_Number: 7.x
Format_Information_Content:

ARC/INFO GRIDS (Tar)	Description of GRID files

sfbr-rt24.tar		Arc/Info grid showing 24 hour rainfall threshold for debris flows
sfbr-rt6.tar		Arc/Info grid showing 6 hour rainfall threshold for debris flows

File_Decompression_Technique: gzip -d

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-745/sfbr-rt6.tar.gz
Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-745/sfbr-rt24.tar.gz

Fees: none

Metadata_Reference_Information:

Metadata_Date: 20160614
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Midwest Area

Contact_Position:

Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/

Contact_Address:

Address_Type: mailing address
Address:

Mail Stop 954
12201 Sunrise Valley Dr

City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA

Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/97-745/f/metadata.html>