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Plans & Documents

Plans & Public Documents

Emergency planning helps the County respond effectively. 

Key plans include: 

  • Comprehensive Emergency Management Plan (CEMP)  

  • Hazard Mitigation Plan (2024)  

These plans guide how agencies work together during disasters and how risks are reduced over time. 

Grays Harbor County, its jurisdictions, and its special purpose districts have updated the
  Hazard Mitigation Plan. 

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Grays Harbor County Hypothetical Cascadia Subduction Zone 

🎥 Tsunami Wave Simulation (Grays Harbor County 

Tsunami wave simulation for Grays Harbor, Washington, from a hypothetical magnitude 9.0 earthquake (L1) scenario on the Cascadia subduction zone. Developed by Washington Geological Survey hazard geologists. 

🎥 Tsunami Wave Simulation (Pacific Beach) 

🎥 Tsunami Wave Simulation (Taholah) 

🎥 Tsunami Current Velocity Simulation (Grays Harbor County) 

Tsunami current velocity simulation for Grays Harbor, Washington, from a hypothetical magnitude 9.0 earthquake (L1) scenario on the Cascadia subduction zone. Developed by Washington Geological Survey hazard geologists. 

🎥 Tsunami Current Velocity Simulation (Pacific Beach) 

🎥 Tsunami Current Velocity Simulation (Taholah) 

Aberdeen, Hoquiam and Cosmopolis 

Westport 

Grayland 

North Ocean Shores 

Ocean City to Copalis Beach 

Copalis Beach to Pacific Beach (Including Seabrook) 

Moclips 

Taholah 

Queets 

By The Washington State Department of Natural Resources 

Tsunami Hazard Maps of Southwest Washington - Model Results from a ~2,500-Year Cascadia Subduction Zone Earthquake Scenario [May 2018]: 

Tsunami inundation of southwest Washington - Grays Harbor to northern Willapa Bay 

Tsunami current velocity of southwest Washington - Grays Harbor to northern Willapa Bay 

Detailed tsunami inundation of southwest Washington - Grays Harbor to northern Willapa Bay 

Tsunami Hazard Maps of the Olympic Peninsula - Model Results from an Extended L1 Mw 9.0 Cascadia Subduction Zone Megathrust Earthquake Scenario [Jan 2022]: 

Detailed tsunami inundation of the Olympic Peninsula - Quinault 

Detailed tsunami inundation of the Olympic Peninsula - Hoh 

Tsunami maximum current speed of the Olypmic Peninsula - Quinault 

Tsunami maximum current speed of the Olympic Peninsula - Hoh 

Tsunami Hazard Maps of the Chehalis, Hoquiam, Willapa, and Wishkah Rivers - Model Results from a L1 Mw 9.0 Cascadia Subduction Zone Megathrust Earthquake Scenario [Dec 2023]   Maps 

Geologic Hazard Maps 

   * Tsunami Evacuation 

   * Tsunami Inundation 

   * Shallow Landslide Hazard Forecast Map 

   * Active Faults and Earthquakes in Washington State 

   * Seismic Scenario Catalog 

   * NEHRP Site Class and Liquefaction Susceptibility 

   * Seismic Design Categories 

   * Hazardous Minerals 

   * Lahar Hazards 

   * Landslides and Landforms 

   * Inactive and Abandoned Mines