54. The deep- to shallow-water attenuation factor from Equation 25 is 

 0.37U. The values in Table 23 multiplied by this factor result in the inner- 

 buoy or shallow water extreme values given in Table 24. 



Table 24 



Attenuated Significant Wave Heights 



Versus Return Period 



Return Period Significant Wave 



years Height, m 



5 3.45 



10 3.68 



20 3.92 



40 4.15 



50 4.23 



60 4.29 



100 4.46 



The values given in Table 24 along with the wave period of 14.3 sec are the 

 estimates for the long-term extreme events pertaining to the St. Paul Harbor 

 area, based on analyses of all the currently available data. 



56 



