By far the greatest damage ($75,000) occurred to a reinforced concrete 

 bridge forming part of the Joe Creek State Highway north of Grays Harbor, 

 Olympic Peninsula (see Figure 79 and Table B-U). The supporting piles 

 sustained serious damage presumably as a result of the battering effect 

 of log debris hurled against the structure by the waves. 



Some damage was also done on Lake Union, Seattle, by seiching 

 caused by the earthquake vibration. The disturbance caused minor damage 

 to the gangway of the U.S.C. & G.S. ship Patton, and snapped a mooring 

 line on the U.S.C. & G.S. ship Lester Jones. Minor damage was also 

 caused to several pleasure craft along the coast, house boats, and floats 

 which broke their moorings (Coast and Geodetic Survey, 196^+). 



A relatively greater amount of damage appears to have occurred 

 along the Oregon coastline, perhaps as a result of the slight concavity 

 favoring more direct wave attack than along the Washington coastline. 

 This is generally borne out by the data plotted in Figure 79. 



Places hardest hit were Cannon Beach City (damage $230,000), Coos 

 Bay ($20,000), Florence($50,000) , Seaside ($276,000), and the Waldport- 

 Alsea area ($l60,000) (Spaeth and Berkman, I967). A listing of the 

 damages estimated by the Office of Civil Defense is given in Table E-6 

 (Appendix E). Figure 207 shows details of the inundation at Seaside, 

 Oregon. Detailed damage information is rather scanty. 



Four children, camping with their parents on the beach near Newport, 

 Oregon, were engulfed in the waves and drowned (Spaeth and Berkman, I967). 



h. Tsunami Damage along the California Coastline 



The tsunami effects along the coast of Northern California have 

 been extensively reported by Magoon (1965). Table B-5 (Appendix B) lists 

 the main features of the tsunamis and the damage costs along this coast. 

 Table B-5 also gives useful information on the tsunamis of 19^6 and 196O 

 (Magoon, 1965)- 



At most places the tsunamis occurred as a fast-rising tide with a 

 maximum rate of change of level from 1 to 2 feet per minute with strong 

 reversing ebb and flood currents. Runup levels attained are summarized 

 in Figure 82 of Section III. 



Observers at Noyo River and Albion River, however, described an 

 almost vertical wall of water progressing upstream, apparently in the 

 nature of a bore. At Noyo (Figure 82) this disturbance travelled up- 

 stream almost 30 miles. 



Except at Crescent City, the damages from the I96U tsunami in 

 Northern California involved mainly commercial fishing or pleasure craft 

 and their associated shoreside facilities. The following is quoted from 

 Magoon (1965) with only minor changes. 



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