2 Monitoring Program 



Monitoring Plan 



A monitoring plan was developed prior to monitoring the St. Paul Harbor site. 

 During the development of the monitoring plan specific hypotheses to be tested 

 were laid out. The hypotheses to be tested are shown below: 



a. The improvements constructed at St. Paul Harbor, Alaska, in 1989 will 

 result in a fiinctional harbor considering wave heights, current circulation 

 patterns and magnitudes, and shoaling protection. 



b. The St. PauJ Harbor improvements constructed in 1989 will be structurally 

 sound. 



c. The two- and three-dimensional model investigations accurately predicted 

 prototype performance. 



d. Sediment will deposit in the harbor via the opening between the detached 

 breakwater and the shoreline, but deposits wA\ not occur in the proposed 

 mooring areas. 



e. From breakwater runup and overtopping data, error ranges predicted from 

 the Shore Protection Manual (1984) for the site-specific, two-dimensional 

 model tests for St. Paul may be determined. 



The objective of the monitoring program was to determine if the harbor and its 

 structures were performing (both functionally and structurally) as predicted by the 

 model studies used for the project design. Wave, current, and bathymetry measure- 

 ments at the project site would determine the effectiveness of the functional design 

 aspects. Ground-based surveys and photogrammetric flights of the main breakwater 

 would reveal its structural response to the wave environment. Runup and over- 

 topping rates would be secured and compared to values obtained in the two- 

 dimensional model study and values computed from guidance provided in the Shore 

 Protection Manual (1984). These unique prototype measurements would aid in 

 refining the design predictions of runup and overtopping, which in turn would aid in 

 future economic, structurally sound, and functional breakwater designs. 



16 



Chapter 2 Monitoring Program 



