Keywords: Accretion, Downdrift beaches, Littoral transport, Massachusetts 

 (Winthrop Beach), Rubble mound, Segmented breakwater, Struc- 

 tural dimensions, Wave attenuation 



The existing Winthrop Shore Drive Seawall at Winthrop, Massachusetts, 

 was found to provide inadequate protection to the developed area behind 

 it except for the part which lies in the lee of the offshore breakwater 

 constructed opposite the south part of Winthrop Beach in 1931-1933 by the 

 Massachusetts Department of Public Works. To prevent further erosion, 

 stabilize and improve the beach, and protect the existing Winthrop Drive 

 Seawall, the study recommended placement of 385,000 cubic yards of sand- 

 fill, construction of eight stone groins with an aggregate length of 3,400 

 feet, and raising the top elevation of the existing seawall 2 feet for a 

 length of 3,200 feet. 



7. BEACH EROSION BOARD, "Beach Erosion Control Study, Illinois Shore of 

 Lake Michigan," H. Doc. 28, 83d Cong., 1st sess., U.S. Army, Corps 

 of Engineers, Washington, D.C., Oct. 1952. 



Keywords: Economic analysis, Illinois (Chicago), Littoral transport. 

 Rubble mound. Steel-sheet piling. Submerged breakwater 



Report recommends the placement of beach fills to be retained by 

 submerged breakwaters as one solution to beach erosion problems along 

 Lake Michigan. The breakwaters would be constructed of steel -sheet 

 piling or rubble mound. 



8. BEACH EROSION BOARD, "Beach Erosion Control Study, Point Mugu to San 

 Pedro Breakwater," H. Doc. 277, 83d' Cong., 2d sess., U.S. Army, Corps 

 of Engineers, Washington, D.C., Nov. 1953. 



Keywords: Accretion, California (Santa Monica and Venice), Detached 



breakwater, Downdrift beaches. Littoral transport, Structural 

 dimensions. Wave diffraction 



This report reviewed masterplans, prepared by local authorities, of 

 shoreline improvement projects to determine the most suitable means of 

 providing shoreline stability. The effects of existing structures on 

 the shoreline and the effect of proposed shoreline improvements on exist- 

 ing flood control outlet works were also studied. The history of shore- 

 line changes associated with the Santa Monica and Venice detached break- 

 waters is outlined. 



9. BEACH EROSION BOARD, "Beach Erosion Control Study, Haleiwa Beach, 

 Oahu, Hawaii," H. Doc. 107, 89th Cong., 1st sess., U.S. Army, Corps 

 of Engineers, Washington, D.C., Feb. 1963. 



Keywords: Armor stability. Beach fill. Detached breakwater, Economic 



analysis, Hawaii (Haleiwa Beach), Littoral transport. Rubble 

 mound. Structural dimensions 



