Washington Public Power Supply System, Preliminary
Safety Analysis Report,
WPPSS Nuclear Project No. 1, 1300 MW Nuclear Power Plant, Vol. 2A.
1977
Table 2R-E9


                       TABLE  2R  E-9
                       EARTHQUAKES INVESTIGATED
                                                     Epicentral
Map                                                  Intensity
No.  Year  Month  Day  Location                      (MM)
     1873  Oct     18  Lake Chelan region, Wash.
     1874  Jan     17  Yakima,  Wash.
     1875  May      6  Yakima,  Wash.
     1875  May      6  Yakima,  wash.
19   1891  Sep      2  Ritlville, Wash.              iv
     1892  Feb     20  Chelan Falls, Wash.
23   1892  Mar      5  North Yakima, Wash.           vi
     1893  Jan    26?  Methow Valley, Wash.
     1893  Jul      7  Wenatchee, Wash.
     1894  Apr     15  Ellensburg,  Wash.            iii
30   1897  Dec     15  Lakeside,  Wash.              v
     1898  Jan         Lakeside,  Wash.
     1898  Feb     22  Ellensburg,  Wash.
     1898  Jun      3  Lakeside,  Wash.
37   1905  Oct     16  Chelan,  Wash.                v
     1905  Dec         Chelan,  Wash.
     1906  Nov     16  Chelan,  Wash.
41   1907  Feb     17  Chelan,  Wash.                v
44   1909  Jan     21  Chelan,  Wash.                iv
     1909  May     24  Waterville,  Wash.
45   1909  May     24  Chelan-Leavenworth, Wash.     v
     1914  Feb      1  Lakeside,  Wash.
     1914  Aug      8  Lakeside,  Wash.
     1915  Mar      1  Lakeside,  Wash.
55   1915  Mar      4  Lakeside,  Wash.              iv
57   1915  Jul     18  Lakeside,  Wash.              iv
58   1915  Aug     18  48.50N.,  121.40W.            vi
59   1915  Aug     18  48.50N.,  121.40W.            v
70   1918  Feb     28  Yakima,  Wash.                v
73   1918  May      7  North Fork Sauk River, Wash.  iv
75   1918  Nov      1  46.70N.,  119.50W.            V-Vi
78   1920  Oct      7  Waterville,  Wash.            v
     1922  Jan     31  Republic,  Wash.
95   1926  Dec     30  Wenatchee, Wash.              v
96   1927  Jan      2  Leavenworth, Wash.            v
     1930  Oct      7  Lemanasky Lake, Wash.
     1931  Sep     18  Lakeside,  wash.
102  1931  Dec      8  Lakeside,  Wash.              iv
     1932  Aug     15  Chelan,  Wash.                iii
     1932  Sep      5  Lakeside,  Wash.
     1933  Apr     29  Chelan,  Wash.
     1933  May     29  Chelan,  wash.
114  1933  May     31  Chelan,  Wash.                iv
etc. (additional info on post-1928 earthquakes RSL)