of the tests, the wave conditions in front of the seawall do not have a 

 JONSWAP spectrum but represent a wider type of spectrum. 



10. Overtopping rates were determined by measuring the change in water 

 level in the overtopping container behind the seawall during a test run. If 

 overtopping rates were high, water was added to the seaside portion of the 

 flume during the test run to compensate for the water lost over the wall and 

 to maintain an approximately constant water level seaward of the seawall. 

 Water levels were measured to the closest one thousandth of a foot before and 

 after a test run, both in the overtopping container and the offshore portion 

 of the wave tank, using point gages. 



1 1 . Information data presented in all the data tables are given in pro- 

 totype dimensions. Table 1 is a list of the various seawall/revetment config- 

 urations tested during this study with figure and plate numbers that corre- 

 spond to their descriptions and data plots, respectively. Also note that the 

 underlayer sizes shown in the cross-sectional figures are oversized in order 

 to compensate for scale effects present in the model. 



13 



