Table A1 



Saco Bay Offshore Input Wave Conditions for Numerical Model 



Direction (deg) 



Period (sec) 



Amplitude (ft) 



WIS 



Model 



90 







5,7,9,11,13,15 





135 



-45 



5,7 





45 



45 



5,7 





67.5 



22.5 



5,7,9,11 





112.5 



-22.5 



5,7,9,11,13,15 





103 



-13 



5,7,9,11,13,15,17 





wave propagation/transformation processes which occur inside the Saco Bay 

 area. These data were based on the wave chmate historical information for 

 Saco Bay. Table A2 lists a summary of the historical wave climate for Saco 

 Bay. The Saco Bay wave climate was characterized by storms within the 

 Wave Information Study (WIS) 20-year hindcast period, 1956-1975. Input 

 wave conditions to the numerical model were specified using the WIS revised 

 hindcast of the North AUantic sea at WIS station 99 (43.50 N, 70.25 W). This 

 station is approximately 9.7 km (6 miles) offshore east of the Saco River 

 mouth and roughly 3.2 km (2 miles) into Saco Bay. All WIS hindcast stations 

 for the U.S. Atlantic coast are shown in Figure A2. Location of WIS stations 

 and the weather buoys near the study area are shown in Figure A3. AU WIS 

 wave hindcast summary data for station 99 are presented in Table A2. Addi- 

 tional hindcast simulations, results of which are also listed in Table 2, were 

 specifically performed for this task to construct wave conditions centered about 

 67.5-, 112.5-, and 103.0-deg incident wave angles. These angles, as will be 

 described later, correspond respectively to 22.5-, -22.5-, and -13.0-deg wave 

 input to the numerical model. 



Nearshore wave measurements in Saco Bay are not available, and therefore, 

 the numerical model had to be run with available data offshore. The only 

 available offshore wave data source for Saco Bay was the deepwater buoys 

 operated by the National Oceanic and Atmospheric Administration's (NOAA's) 

 National Data Buoy Center (NDBC). As shown in Figure A3, climatological 

 information for the Saco Bay area may be obtained from the nearest NDBC 

 buoy, #44007 (Gilhousen et al. 1986).^ However, since WIS hindcast esti- 

 mates are routinely compared to the NDBC buoy measurements, this 

 establishes a high degree of confidence in the WIS database. Therefore, it was 

 decided to use WIS hindcast data directly in this study. Noting that the NDBC 

 wave buoy measurements may lack wave direction information when non- 

 directional buoys are used, WIS directional estimates could not be compared 



^ References cited in this appendix are included in the References at the end of the main text. 

 Appendix A Saco Bay Nearshore Wave Estimates 



A3 



