Procedure 



The Beach Erosion Board's Field Research Group No. 2 moved 

 into the Long Branch area on L4 March 194-8 and established their 

 field office on city-owned land adjacent to the project area. 

 The work of establishing control along four miles of beach, for 

 the seventy profiles to be duplicated at intervals in order to- 

 trace sand movement, was started immediately. Sufficient hydrographic 

 work had been completed to permit delineation of the dump area by 

 mid-April „ 



Sand Dumping . The New York District hopper dredge "Goethals" 

 dumped the first load of material, dredged from the New York channel, 

 at the Long Branch site on 30 April 194-8. Dumping at the site con- 

 tinued throughout the summer until 19 August 1948 when a grand total 

 of 601,991 cubic yards of sand had been dumped along the shoreward 

 side of the dump area. 



Surveys . Prior to any dumping by the dredge a hydrographic survey 



was made of the area to serve as the basic survey. Surveys were made 



later of the dump area at about weekly intervals to determine the 



movement of the sand dumped by the dredge, and also to insure the 



safety of the dredge in operations over the dumping grounds. Compara- 

 tive hydrographic surveys of the entire area were made at three-month 

 interval] s 



Sampling . Sand samples of the offshore bottom material were 

 taken at selected locations, along with samples from the beach at mid- 

 tide level. A sample of each dredge load was taken before dumping at 

 the site. 



Aerial Photographs . Aerial photographs of the shore line under 

 study were flown by the U. S. Naval Reserve of Willow Grove, Pa. on 

 7 September and 16 October 1948. 



Oceanographic Conditions during Test 



Weather . During che period of study, 15 March to 9 November 1948, 

 ocean' and weather conditions were favorable to hydrographic operations 

 58$ of the time. Adverse conditions, which included days of rain, fog, 

 haze and heavy seas, were encountered 42$ of the time. During this 

 period storms of varied intensity visited the area. The first storm 

 of consequence struck the north Jersey coast on 15 May 1948. Winds 

 were from the northeast, 20 to 30 mph„, with waves 6 to 8 feet in 

 height. The highest tide of the season was recorded at this time with 

 a maximum tide of 6.3 feet above mean low water. A second storm 

 starting on 4 October and lasting through 6 October 1948 was of greater 

 intensity. Winds were from the northeast with sustained velocities of 

 25 mph. and gusts up to 45 mph. Waves were from 10 to 15 feet in 

 height with 8 to 10 second periods. 



