Table 6. Dredging record at Lockwoods Folly Inlet during 

 BEP study. 



Year 



Dredging period 



Volume 

 (m3) 



Annual volume 

 (m3) 



1971 



Aug.^ 





82,690 



19 72 



28 Aug. -26 Sept. 

 28 Nov. -11 Dec. 



45,870 

 21,4102 





19 73 



23 Aug. -5 Sept. 



21,4102 



83,050 



197A 



6-22 June 



. _.. _ , . . 



46,330 



41,760^ 

 70,9 30^ 



Ias shown in August 1971 aerial photo (Fig. 2). 



Estimated, based on dredging rate of 1,530 cubic meters per day. 

 -'Annual volume from two contracts . 



The results of the beach fill are evident in the volume and MSL 

 intercept changes observed at profile line 2 (Apps . C and D) , and also in 

 the averaged beach changes along the Lockwoods Folly reach (Tables 4 and 

 5) . The effect of the fill appears to be temporary since the mean change 

 in Lockwoods Folly reach is a loss except during nourishment periods. 



A series of 16 sandbag groins, placed along the east end of the 

 island in December 19 72, were monitored approximately monthly until July 

 1974, using beach profile measurements and aerial photos (Machemehl, 1977), 

 Evidence indicates the program did little to retard erosion. There was no 

 sign of the groins along the beach in October 1980. 



(2) Storms . A tabulation of storms revealed that 71 hurricanes 

 which may have affected the study area occurred along the southern North 

 Carolina coast from 1804 to 1971, an average of 1 hurricane every 2.4 

 years (U.S. Army Engineer District, Wilmington, 1973). Complete records 

 of coastal impacts do not exist for the earlier storms. Hurricane Hazel, 

 which occurred in October 1954, has been identified as the "most destruc- 

 tive and damaging storm that' has struck the North Carolina coast in over 

 50 years" (U.S Army Engineer District, Wilmington, 1973, p. A-17). The 

 storm made landfall near the North Carolina-South Carolina State line and 

 caused a storm surge of 4.6 meters above MSL or 2.1 meters above the aver- 

 age topographic elevation of the barrier island masses. Damages to Long 

 Beach, Holden Beach, and Ocean Isle Beach were estimated in 1954 at 

 $8.76 million (U.S. Army Engineer District, Wilmington, 1973). 



East coast storms which may have affected the BEP study period 

 are given in Table 7. The wind events were selected from observations 

 at Wilmington, North Carolina (Fig. 1), and represent periods when the 

 recorded velocity was greater than 10 meters per second for 4 consecutive 

 hours. Water level records, available for most of the study period, were 

 also taken at Wilmington. The 27 storms caused a net loss of sand volume 

 over the central reach. It is evident that not all of the storms caused 



38 



