maximum erosion between the 16- and 14-foot contours. Profile line 04 
accreted between the 8-. and 5-foot contours, but significant erosion oc- 
curred at MSL. Although profile lines 09 and 18 showed erosion between 
the 8- and 5-foot contours, greater erosion occurred below the 5-foot 
contour. Accretion was observed on the lower part of most profile lines. 
Those profile lines that indicated erosion on the lower ends generally 
eroded along the entire profile. Profile line 18, which is located approx- 
imately 260 feet south of a groin, showed accretion in the dune area (18- 
to 10-foot contours) with severe erosion occurring below the 8-foot con- 
tour. 
Profile lines 01 and 02 are located inside Barnegat Inlet and are also 
within a field of six closely spaced groins. Profile line 01 eroded along 
the entire surveyed length (to -2 feet MSL), with maximum erosion between 
the 8- and 4-foot contours. Profile line 02 showed almost no change above 
the 1-foot contour; it accreted seaward to the -2-foot contour. Profile 
line 03 is located approximately 450 feet south of the Barnegat Inlet south 
jetty. This profile line showed significant accretion from the 13-foot 
contour to a depth of -1 foot, except for minor erosion at the 6- and 
5-foot contours. From the 16- to 14-foot contours there was much erosion. 
The average net volume change over 20 profile lines on Long Beach 
Island was -10.6 cubic yards per foot. Ten of the 14 profile lines that 
were surveyed to MSL had a positive or seaward MSL contour change between 
the prestorm and poststorm surveys; i.e., the poststorm survey showed 
accretion at MSL on 10 profile lines. 
Pipe profiles were located along profile lines 13 and 16. At profile 
line 13, pipes 1 to 5 were read on 24 November and 18 December 1970. Max- 
imum erosion at any one of the pipes was 3 feet, measured at pipe 3 where 
the sand level changed from 9.2 to 6.2 feet MSL. Maximum accretion at any 
one of the pipes was 1.5 feet, measured at pipe 5 where the sand level 
changed from 1.4 to 2.9 feet MSL. 
At profile line 16, pipes 1 to 4 were read on both 25 November and 
18 December 1970. Maximum erosion at any one of the pipes was 2.5 feet, 
measured at pipe 3 where the sand level changed from 6.4 to 3.9 feet MSL. 
Maximum accretion at any one of the pipes was 0.5 foot, measured at pipes 
1 and 4. 
Because the prestorm pipe readings were obtained more than 3 weeks 
before the storm, they are of limited use in judging the storm effects at 
this locality. 
7. Atlantic City, New Jersey. 
Profile line locations are shown in Figure 19, surveyed beach profiles 
in Figure 20, and MSL contour and area changes in Table 8. Extensive 
accretion was observed on profile line 01, which appears to be caused 
58 
