Table 7 
Measured and Computed Volume Changes (cu _m/m) 
Storm Profile Measured Computed Percent of Measured 
Westhampton, NY 3 52.8 29.5 56 
3 February 1972 4 69.4 23.0 33 
5 51.3 37.9 63 
Westhampton, NY 3 26.5 33.9 128 
19 February 1972 4 35.2 19.1 54 
5 Silica 21.1 67 
Long Beach Is., NJ 14 30.6 38.2 125 
19 December 1977 15 26.2 42.5 162 
16% 13.8 35.2 255 
Ute 34.5 43.4 126 
18* 6.0 41.7 695 
Duck, NC 186 31.7 33.4 104 
13-14 November, 188 41.3 48.1 112 
1981 190 37.4 SBi0(/ 143 
* Profiles were located in the vicinity of coastal structures 
for the purposes of verifying the model (CE 1986). A brief description of the 
subject area and the associated storm event are presented below. 
146. Simulation for Revere Beach. The storm event selected for veri- 
fication of the beach erosion model with seawall modification was a winter 
storm of 6-7 February 1978. The area of interest is Revere Beach located in 
Revere, Massachusetts, approximately 10 miles north of Boston (Figure 24). 
Onshore profiles and bathymetric surveys were taken prior to the storm during 
November and December of 1977 and again after the storm. Eight separate sur- 
vey lines were taken which covered the area from the seawall to a depth of 
20-30 ft MLW. A storm summary, prepared by Carol R. Johnson & Associates, 
Inc. (1978), reported a storm surge in Boston Harbor of approximately 4.0 ft 
superimposed on a spring tide condition. The two-day event was accompanied by 
maximum wind velocities of 70 knots. Recorded time histories of the total 
surge level indicated a maximum elevation of nearly 10.5 ft above the mean. 
Such documentation of a single storm event and resultant bathymetric change is 
uncommon. 
147. Analysis of the Revere Beach data set was made in order to deter- 
mine its acceptability for verification of the seawall model. This analysis 
resulted in the following observations: 
73 
