22 



10 II 12 a 



PROVIDENCE 



SOMERSET 



Fig. 13. Verification of 1938 hxirricane tide heights 



from the data shoim on figs. 9^ H^ and 12. 



31. Prototype and model plots of the 1938 hurricane tide curves 

 at Newport^ Providence^ and Somerset, shown on fig. 13, indicate that 

 the time phasing of the peak of the hurricane tide was the same in the 

 model as in the prototype. Some differences may be noted between proto- 

 type and model with respect to the slopes of the tide cirrves, especially 

 at Somerset, but these differences are thought to be due to wind effects 

 in the prototype . In addition to the comparisons between prototype and 

 model tide c\xrves shoim on fig. 13, the maximum elevations reached by 

 the 1938 hurricane tide at niimerous locations throughout the bay system 

 were checked against elevations at corresponding points in the model. 

 High-water elevations at all points in the model were found to be lower 

 than those at corresponding points in the prototype by amoimts approx- 

 imately equal to the computed wind setup for such locations . It was 

 therefore concluded that the model would reproduce accurately through- 

 out the entire bay system the gravitational component of any hurricane 

 tide generated in the model ocean. 



