Profile line 07, located 280 feet west of a groin, showed some erosion at 
the 11- to 8-foot contours, with accretion seaward to the -1l-foot contour. 
Profile line 08, which is located 240 feet west of a groin, showed minor 
erosion at the 14- to 9-foot contours, with accretion seaward of the 
9-foot contour to the -2-foot contour. Profile line 09, which is located 
360 feet east of a groin, eroded above the 4-foot contour and showed in- 
creasing accretion between the 3-foot and MSL contours. 
The average net volume change above MSL between 1 and 18 December on 
the 11 Westhampton Beach profile lines was -4.1 cubic yards per foot. 
However, the shoreline had eroded on only four profile lines; i.e., the 
MSL contour moved landward. 
Pipe profiles were located along profile lines 04 and 08. At profile 
line 04, pipes 1 to 4 were read on 11, 17, and 18 December 1970; pipes 5 
and 6 were read on both 11 and 18 December 1970. Maximum erosion at any 
one of the pipes was 4 feet, measured between 11 and 17 December at pipe 
4 where the sand level changed from 5.8 to 1.8 feet MSL. Between 17 and 
18 December, pipe 4 showed 2.5 feet of accretion. There was also 4 feet 
of erosion at pipe 3 between 11 and 18 December 1970. Maximum accretion 
at any one of the pipes was 4.0 feet, measured at pipe 6 where the sand 
level changed from 0.5 to 4.5 feet MSL. 
At profile line 08, pipes 1 to 6 were read on 11, 17, and 18 December 
1970. Maximum erosion at any one of the pipes was -4.0 feet, measured 
between 11 and 17 December at pipe 5 where the sand level changed from 
9.3 to 5.3 feet MSL. By the 18th, sand level at pipe 5 had recovered to 
SoS) sR 
4. Southampton Beach, New York. 
Although no BEP surveys were made at Southampton Beach, visual wave 
observations were collected by students from the Southampton College 
Geology Department; a poststorm inspection was made by CERC. The beach 
at Halsey Neck Lane has apparently been the site of continuous erosion in 
recent years. There was a 10- to 20-foot scarp developed to within 10 
feet of several homes. Large areas of peat beds were exposed at the base 
of this scarp. 
Local observers reported that several ponds bordering the ocean, in- 
cluding Mecox Bay, had broken through the barrier beach to the ocean. At 
least one additional washover had occurred approximately 2.3 miles east 
of Shinnecock Inlet. Several of these areas were still flooded on 18 
December, but had not remained open. 
5. Jones Beach, New York. 
Profile lines 10 to 18 were surveyed on 19 December (2 days after the 
storm), and profile lines 02, 03, 04, 07, 08, and 09 were surveyed on 20 
December. (Profile lines 01, 05, and 06 were not regularly surveyed in 
40 
