Earthquake Hazard Areas (U.S.)
North AmericaPhysical EnvironmentAreas in the United States with greater than 1% probability of potentially damaging ground shaking in one year
USGSA map highlights earthquake hazard areas across the United States using a color-coded scheme to indicate different levels of hazard.
The lowest hazard areas are shaded in blue, covering parts of Texas, Florida, Iowa, North Dakota, and Wisconsin, as well as extreme northern regions of Alaska. Low hazard areas are shaded in purple, seen in regions such as parts of the eastern and middle United States, including Dallas, Chicago, and Washington D.C. Moderately low hazard areas are shaded in pink, found in central and northern Illinois, and spread across western parts including Oregon, Arizona, and New Mexico. Moderate hazard areas are shaded in orange, covering parts of the eastern and western regions, and most of Alaska. Moderately high hazard areas are shaded in yellow, covering regions such as the West Coast, including California, Oregon, and Washington, as well as Fairbanks in Alaska. High hazard areas are shaded in light brown, seen in parts of Anchorage and the western coastal regions. The highest hazard areas are shaded in dark brown, notably in regions like southern Alaska and parts of California, including the San Francisco and Los Angeles areas.
Lowest hazard | Low hazard | Moderately low hazard | Moderate hazard | Moderately high hazard | High hazard | Highest hazard | Class | Rank | Value | Class | Rank | Percentage of annual change | BP Amoco Cherry Point Refinery | BP Texas City Refinery | BP Toledo Refinery | BP West Coast Products Refinery | BP Whiting Refinery | Chalmette Refining LLC Refinery | Chevron El Segundo Refinery | Citgo Corpus Christi Refinery | Citgo Petroleum Corp Lake Charles Refinery | Coffeyville Resources Refinery | ConocoPhillips Alliance (Belle Chasse) Oil Refinery LA USA | ConocoPhillips Borger Refinery | ConocoPhillips Linden Refinery | ConocoPhillips Ponca City Refinery | ConocoPhillips Sweeny Refinery | ConocoPhillips Westlake Refinery | ConocoPhillips Wilmington Refinery | ConocoPhillips Wood River Refinery | Crown Central Petroleum Corp Refinery | Deer Park Refining LTD Ptnrshp Refinery | ExxonMobil Baytown Refinery USA | ExxonMobil Beaumont Refinery | ExxonMobil Joliet Refinery | ExxonMobil Torrance Refinery | Flint Hills Resources LP Refinery | Flint Hills Resources LP Saint Paul Refinery | Flint Hills Resources North Pole Refinery | Frontier Refining and Marketing Inc El Dorado Refinery | Imperial Oil Nanticoke Refinery | Imperial Oil Sarnia Refinery | Imperial Oil Strathcona Refinery | Irving Oil Limited Refinery | Lyondell Citgo Refining Houston Refinery | Marathon Ashland Petroleum LLC Catlettsburg Refinery | Marathon Ashland Petroleum LLC Garyville Refinery | Marathon Ashland Petroleum LLC Robinson Refinery | Motiva Enterprises LLC Convent Refinery | Motiva Enterprises LLC Norco Refinery | Motiva Enterprises LLC Port Arthur Refinery | Murphy Oil U.S.A. Inc Meraux Refinery | North Atlantic Refining Come by Chance Refinery | PBF Paulsboro Refinery NJ USA | PDV Midwest Refining LLC Lemont Refinery | Petro Canada Edmonton Refinery | Petro Canada Montreal Refinery | Premcor Refining Group Inc Lima Refinery | Premcor Refining Group Inc Memphis Refinery | Premcor Refining Group Inc Port Arthur Refinery | Premcore Refining Group Inc Delaware Refinery | Shell Anacortes Refinery | Shell Montreal East Refinery | Shell Oil Martinez Refinery | Shell Scotford Refinery | Sunoco Philadelphia Refinery | Sunoco Toledo Refinery | Tesoro Golden Eagle Martinez Refinery | Total Petrochemicals Inc Port Arthur Refinery | Ultramar(Valero) Jean-Gaulin Refinery | Valero Energy Corp Sunray Refinery | Valero Refining Co Corpus Christi West Refinery | Valero Refining Co Texas City Refinery | Valero Refining Corpus Christi East Plant | Valero Refining Port Arthur Refinery | Valero Saint Charles Oil Refinery LA USA | Valero Wilmington Refinery | Western Refining Co El Paso Refinery | |
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| 26.4% | 18.4% | 16.6% | 29.2% | 5.20% | 4.36% | 7.41% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||