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Additional USGS Geoscience data can be found by geographic location or by publication series.

Hazard maps of the U.S.

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

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: U.S. Geological Survey

Publication_Date: 1997

Title: Hazard maps of the U.S.

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 97-131 and 97-130

Online_Linkage: <ftp://hazards.cr.usgs.gov/hazmaps/gis/>

Description:

Abstract:: The coverages were created using the gridded data available from this ftp site. Most of the gridded data for the United States is at a spacing of 0.1 degrees latitude and longitude. The higher resolution data available for California, Nevada, and part of Arizona and Utah were used for both the U.S. and Western U.S. maps. The gridded data for this area is at a spacing of 0.05 degrees latitude and longitude.
Purpose:: To provide to the public a digital hazard map database of the United States.

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: -125.00
East_Bounding_Coordinate: -65.00
North_Bounding_Coordinate: 49.40
South_Bounding_Coordinate: 24.60

Access_Constraints: none

Use_Constraints: none

Keywords:

Theme:

Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
Theme_Keyword: 3170 - SDTS
Theme_Keyword: 3100 - Vector
Theme_Keyword: 3110 - ESRI
Theme_Keyword: 3112 - export
Theme_Keyword: 1500 - Hazards

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation

Place:

Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
Place_Keyword: US01 = Alabama
Place_Keyword: US04 = Arizona
Place_Keyword: US05 = Arkansas
Place_Keyword: US06 = California
Place_Keyword: US08 = Colorado
Place_Keyword: US09 = Connecticut
Place_Keyword: US10 = Delaware
Place_Keyword: US11 = District of Columbia
Place_Keyword: US12 = Florida
Place_Keyword: US13 = Georgia
Place_Keyword: US16 = Idaho
Place_Keyword: US17 = Illinois
Place_Keyword: US18 = Indiana
Place_Keyword: US19 = Iowa
Place_Keyword: US20 = Kansas
Place_Keyword: US21 = Kentucky
Place_Keyword: US22 = Louisiana
Place_Keyword: US23 = Maine
Place_Keyword: US24 = Maryland
Place_Keyword: US25 = Massachusetts
Place_Keyword: US26 = Michigan
Place_Keyword: US27 = Minnesota
Place_Keyword: US28 = Mississippi
Place_Keyword: US29 = Missouri
Place_Keyword: US30 = Montana
Place_Keyword: US31 = Nebraska
Place_Keyword: US32 = Nevada
Place_Keyword: US33 = New Hampshire
Place_Keyword: US34 = New Jersey
Place_Keyword: US35 = New Mexico
Place_Keyword: US36 = New York
Place_Keyword: US37 = North Carolina
Place_Keyword: US38 = North Dakota
Place_Keyword: US39 = Ohio
Place_Keyword: US40 = Oklahoma
Place_Keyword: US41 = Oregon
Place_Keyword: US42 = Pennsylvania
Place_Keyword: US44 = Rhode Island
Place_Keyword: US45 = South Carolina
Place_Keyword: US46 = South Dakota
Place_Keyword: US47 = Tennessee
Place_Keyword: US48 = Texas
Place_Keyword: US49 = Utah
Place_Keyword: US50 = Vermont
Place_Keyword: US51 = Virginia
Place_Keyword: US53 = Washington
Place_Keyword: US54 = West Virginia
Place_Keyword: US55 = Wisconsin
Place_Keyword: US56 = Wyoming

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Perkins, David M
Contact_Organization: USGS-GEO-CRG-GHZ

Contact_Address:

Address_Type: mailing and physical address
Address:: Mail Stop 966, USGS
P.O. Box 25046
City: Lakewood
State_or_Province: CO
Postal_Code: 80225
Country: US

Contact_Voice_Telephone: 303-273-8554

Contact_Electronic_Mail_Address: perkins@usgs.gov

Data_Quality_Information:

Completeness_Report: Excludes Alaska, Hawaii, and Puerto Rico

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:: Most of the gridded data for the United States is at a spacing of 0.1 degrees latitude and longitude. The higher resolution data available for California, Nevada, and part of Arizona and Utah were used for both the U.S. and Western U.S. maps. The gridded data for this area is at a spacing of 0.05 degrees latitude and longitude.

Lineage:

Process_Step:

Process_Description:
Process_Date:

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.1
Longitude_Resolution: 0.1
Geographic_Coordinate_Units: decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: US1HZ050.PAT
Entity_Type_Definition:: 1.0 second Spectral Acceleration with 10% Probability of Exceedance in 50 years
Entity_Type_Definition_Source: OFR-97-0131

Attribute:

Attribute_Label: ACC_VAL

Attribute_Definition:

Acceleration value in percent of gravity of the polygon. The polygon represents the range of acceleration values that are contained within its borders. The polygon is assigned the lowest value allowed within the polygon's borders. The range of values allowed within a polygon is controlled by the contours.

Attribute_Definition_Source: OFR-97-0131

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent of gravity
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: VALLEY

Attribute_Definition:

A topological indicator that tells whether the area contained within the polygon is a local minima (valley) or not. A value of "1" indicates the area is a local minima.

Attribute_Definition_Source: OFR-97-0131

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: Not a local minima

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Location of local minima

Detailed_Description:

Entity_Type:

Entity_Type_Label: US1HZ050.AAT
Entity_Type_Definition:: 1.0 second Spectral Acceleration with 10% Probability of Exceedance in 50 years (same attributes as polygon coverage US1HZ0500.PAT)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US1HZ050.PAT
Entity_Type_Definition:: Point coverage of 1.0 second Spectral Acceleration with 10% Probability of Exceedance in 50 years (same attributes as polygon coverage US1HZ050.PAT)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US1HZ100
Entity_Type_Definition:: Polygon, arc, and point coverage of 1.0 seconds spectral acceleration with 5% probability of exceedance in 50 years. (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US1HZ250
Entity_Type_Definition:: Polygon, arc, and line coverage of 1.0 seconds spectral acceleration with 2% probability of exceedance in 50 years. (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US3HZ050
Entity_Type_Definition:: Polygon, arc, and point coverage of 0.3 second spectral acceleration with 10% probability of exceedance in 50 years (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US3HZ100
Entity_Type_Definition:: Polygon, arc, and point coverage of 0.3 seconds spectral acceleration with 5% probability of exceedance in 50 years (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US3HZ250
Entity_Type_Definition:: Polygon, arc, and point coverage of 0.3 seconds spectral acceleration with 2% probability of exceedance in 50 years (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US5HZ050
Entity_Type_Definition:: Polygon, arc, and point coverage of 0.2 seconds spectral acceleration with 10% probability of exceedance in 50 years (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US5HZ100
Entity_Type_Definition:: Polygon, arc, and point coverage of 0.2 seconds spectral acceleration with 5% probability of exceedance in 50 years. (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: US5HZ250
Entity_Type_Definition:: Polygon, arc, and point coverage of 0.2 second spectral accleration with 2% probability of exceedance in 50 years. (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: USPGA050
Entity_Type_Definition:: Polygon, arc, and point coverage of peak ground acceleration with 10% probability of exceedance in 50 years. (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

Detailed_Description:

Entity_Type:

Entity_Type_Label: USPGA100
Entity_Type_Definition:: Polygon, arc, point coverage of peak ground acceleration with 5% probability of exceedence in 50 years (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-131

Detailed_Description:

Entity_Type:

Entity_Type_Label: USPGA250
Entity_Type_Definition:: Polygon, arc, and point coverage of peak ground acceleration with 2% probability of exceedance in 50 years (same attributes as US1HZ050)
Entity_Type_Definition_Source: OFR-97-0131

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

Distribution_Liability:

Although these data have been used by the U.S. Geological Survey, no warranty, expressed or implied is made by the USGS as to the accuracy of the data and related material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith.

Resource_Description: US Geological Survey Open-File Report 97-0131

Standard_Order_Process: