3. Westhampton Beach, New York. 
Profile line locations are plotted in Figure 13, surveyed beach pro- 
files in Figure 14, and MSL contour and area changes in Table 5. With 
the exception of profile lines 07, 08, and 11, all profile lines exhibited 
net erosion. Since prestorm surveys were done more than 2 weeks before 
the storm, profile changes were probably not entirely the result of the 
storm. 
Table 5. Shoreline and unit volume changes at 
Westhampton Beach for 17 December 
1970 storm. 
Plus 12! 
unit volume 
(yd3/ft) 
PRCHAR! 
unit volume 
(yd3/ft) 
MSL 
shoreline change 
(ft) 
Profile 
line 
01 14.1 4 -3.4 
02 =12.4 0 -8.0 
03 -12.2 -1.7 SJbols) 
04 NF o®) -16.9 -16.9 
0S -63.0 eS -6.2 
06 6 -8.6 
07 ll Zod 
08 8) .6 
OS Wo) eS 9 -5.0 
10 o8) -13.0 
11 0 0.8 
Average -4.6 
1See Figure 8 for definitions. 
2Poststorm survey did not reach MSL. 
In general, the greatest erosion on the Westhampton profile lines was 
observed above the 6-foot contour; less erosion or accretion occurred on 
the lower profile. An exception was profile line 03 which showed minor 
accretion at the 6- to 4-foot contours, with erosion occurring on both the 
upper and lower parts of the profile. 
Profile lines 06 to 09 are within a field of 15 groins and an associ- 
ated artificial beach-fill project, which was completed in November 1970. 
Profile line 05, which is about 0.3 mile east of the easternmost groin, 
showed two sections of maximum erosion--between the 8- and 6-foot contours 
and between the 1-foot and MSL contours. Profile line 06, which is located 
midway between two groins, eroded between the 12-foot and MSL contours, 
with the greatest erosion occurring between the 8- and 6-foot contours. 
34 
