Hazard maps of the U.S.

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/97-131/metadata.faq.html
Description 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
Originators U.S. Geological Survey
Publication U.S. Geological Survey Open-File Report 97-131 and 97-130

Related topics

States or counties

US1HZ050.PAT

1.0 second Spectral Acceleration with 10% Probability of Exceedance in 50 years

Label Definition
ACC_VAL 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.
VALLEY 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.

US1HZ050.AAT

1.0 second Spectral Acceleration with 10% Probability of Exceedance in 50 years (same attributes as polygon coverage US1HZ0500.PAT)

Label Definition

US1HZ050.PAT

Point coverage of 1.0 second Spectral Acceleration with 10% Probability of Exceedance in 50 years (same attributes as polygon coverage US1HZ050.PAT)

Label Definition

US1HZ100

Polygon, arc, and point coverage of 1.0 seconds spectral acceleration with 5% probability of exceedance in 50 years. (same attributes as US1HZ050)

Label Definition

US1HZ250

Polygon, arc, and line coverage of 1.0 seconds spectral acceleration with 2% probability of exceedance in 50 years. (same attributes as US1HZ050)

Label Definition

US3HZ050

Polygon, arc, and point coverage of 0.3 second spectral acceleration with 10% probability of exceedance in 50 years (same attributes as US1HZ050)

Label Definition

US3HZ100

Polygon, arc, and point coverage of 0.3 seconds spectral acceleration with 5% probability of exceedance in 50 years (same attributes as US1HZ050)

Label Definition

US3HZ250

Polygon, arc, and point coverage of 0.3 seconds spectral acceleration with 2% probability of exceedance in 50 years (same attributes as US1HZ050)

Label Definition

US5HZ050

Polygon, arc, and point coverage of 0.2 seconds spectral acceleration with 10% probability of exceedance in 50 years (same attributes as US1HZ050)

Label Definition

US5HZ100

Polygon, arc, and point coverage of 0.2 seconds spectral acceleration with 5% probability of exceedance in 50 years. (same attributes as US1HZ050)

Label Definition

US5HZ250

Polygon, arc, and point coverage of 0.2 second spectral accleration with 2% probability of exceedance in 50 years. (same attributes as US1HZ050)

Label Definition

USPGA050

Polygon, arc, and point coverage of peak ground acceleration with 10% probability of exceedance in 50 years. (same attributes as US1HZ050)

Label Definition

USPGA100

Polygon, arc, point coverage of peak ground acceleration with 5% probability of exceedence in 50 years (same attributes as US1HZ050)

Label Definition

USPGA250

Polygon, arc, and point coverage of peak ground acceleration with 2% probability of exceedance in 50 years (same attributes as US1HZ050)

Label Definition