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Service Description: <div style='text-align:Left;'><div><div><div style='font-size:12pt'><p><span>This service contains six point, line, and polygon feature classes pertaining to seismogenic features in Washington State, including: 1) Quaternary active faults, (faults with demonstrable Quaternary-age activity), 2) Quaternary active folds (folds with demonstrable Quaternary-age activity), 3) Fault trenches (locations of excavations made for use in studying and documenting potentially active faults), 4) Earthquakes less than M1.0 (earthquake catalog data obtained from the Pacific Northwest Seismic Network greater than magnitude 1.0 and less than 25 km in depth), 5) Relocated earthquakes less than M1.0 (a subset of the PNSN earthquakes with more accurately located earthquake hypocenters), and 6) Historical earthquake damage (locations, photos, and descriptions of major damage from historical earthquakes in Washington). </span></p></div></div></div></div>

Map Name: Earthquakes and Faults

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Layers:

• Fault Trenches (0)
• Historical Earthquake Damage (1)
• Quaternary Active Faults (12)
• Quaternary Active Folds (2)
• Relocated Earthquakes >1M (4)
• Earthquakes >1M (5)

Tables:

• Historical Earthquake Photos (6)
• Fault Citation (8)

Description: This service contains six point, line, and polygon feature classes pertaining to seismogenic features in Washington State, including: 1) Quaternary active faults, (faults with demonstrable Quaternary-age activity), 2) Quaternary active folds (folds with demonstrable Quaternary-age activity), 3) Fault trenches (locations of excavations made for use in studying and documenting potentially active faults), 4) Earthquakes less than M1.0 (earthquake catalog data obtained from the Pacific Northwest Seismic Network greater than magnitude 1.0 and less than 25 km in depth), 5) Relocated earthquakes less than M1.0 (a subset of the PNSN earthquakes with more accurately located earthquake hypocenters), and 6) Historical earthquake damage (locations, photos, and descriptions of major damage from historical earthquakes in Washington).

Service Item Id: c4359a9a56b0400bbe9dd141c94e9dea

Copyright Text: Washington Geological Survey, 2025, Earthquakes and Faults Database--GIS data, April 2025: Washington Geological Survey Digital Data Series 1, version 6.0, previously released February 2019. https://fortress.wa.gov/dnr/geologydata/publications/data_download/ger_portal_earthquakes_faults.zip

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Spatial Reference: 2927  (2927)  LatestVCSWkid(0)

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Spatial Reference: 2927  (2927)  LatestVCSWkid(0)

Units: esriFeet

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: Earthquakes and Faults
Author:
Comments: This service contains six point, line, and polygon feature classes pertaining to seismogenic features in Washington State, including: 1) Quaternary active faults, (faults with demonstrable Quaternary-age activity), 2) Quaternary active folds (folds with demonstrable Quaternary-age activity), 3) Fault trenches (locations of excavations made for use in studying and documenting potentially active faults), 4) Earthquakes less than M1.0 (earthquake catalog data obtained from the Pacific Northwest Seismic Network greater than magnitude 1.0 and less than 25 km in depth), 5) Relocated earthquakes less than M1.0 (a subset of the PNSN earthquakes with more accurately located earthquake hypocenters), and 6) Historical earthquake damage (locations, photos, and descriptions of major damage from historical earthquakes in Washington).
Subject: These data were created to provide users with information pertaining to seismogenic features in Washington State, including faults, folds and earthquakes.
Category:
Keywords: Washington,Seismogenic Features,active faults,active folds,paleoseismic trenches,excavations,Quaternary fault,Quaternary fold,earthquakes,seismicity,hypocenter,relocation
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Supported Query Formats: JSON, geoJSON, PBF

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