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Relative Earthquake Hazard Map of the Portland Metro Region, Clackamas, Multnomah, and Washington Counties, Oregon, originally published in hardcopy form by Oregon Department of Geology and Mineral Industries as IMS-1 (Interpretive Map Series number one) . The digital information is current to the date of map publication, which was 1997. This digital information generally matches the published hardcopy map released as IMS-1 by the Oregon Department of Geology and Mineral Industries, Portland, Oregon. Point of contact: Geology by Matthew A. Mabey, Department of Geology, Brigham Young University; Gerald L. Black and Ian P. Madin, Oregon Department of Geology and Mineral Industries; Dan B. Meier, Woodward-Clyde Consultants, Portland, Oregon; T. Leslie Youd and Celinda F. Jones, Department of Civil and Environmental Engineering, Brigham Young University; J. Benjamin Rice, GIS Layout, Metro Regional Services, Portland, Oregon. |