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~ N <br />P <br />~~ <br /> <br />I ~ T <br />~~ <br />~N- <br />~~ ~~. fir. ~~1 ~~r <br />~t~ <br />Legend <br />O Major seismic event <br />Scale in miles <br />0 50 100 150 200 <br />Source: Based on USGS (1996) <br />ur ~H• trr <br />Major seismic events eta »r <br />No. Earthquake Date Magnitude <br />1 Milton-Freewater July 16, 1936 6.1 <br />2 Portland October 12, 1877 5.3 <br />3 Portland November 6, 1962 5.2 <br />4 Scott Mills March 25, 1993 5.6 <br />5 Klamath Falls September 2l, 1993 5.9, 6.0* <br />6 Southwest Oregon November 23, 1873 6.8 <br /> Double event <br />~+r I <br />Figure 7. Major seismic events in Oregon. <br />