greatest amount of erosion. Isometric block diagrams are given in 

 this comprehensive report which show cumulative volume changes within 

 the groin embayment during the period from 1956 to 1968. 



Key Words - Artificial-fill/Great Lakes/Erosion/Accretion/System/ 

 1955-1959/1960-1964/1965-1969/ 



"Dade County, Florida" 



U. S. Army Corps of Engineers, House Docu- 

 ment No. 335, 90th Congress, 2nd Session, 

 June, 1968. 



Key Words - House Document/Not Annotated/ 



6806GR0001 



"Brevard County, Florida" 

 U. S. Army Corps of Engineers, House Docu- 

 ment No. 352, 90th Congress, 2nd Session, 

 July, 1968. 



Key Words - House Document/Not Annotated/ 



6807GR0001 



"The Dynamics of a Coast with a Groyne 6809GR0001 



System" 



Bakker, W. T. , Proceedings of Eleventh 



Conference on Coastal Engineering , ASCE, 



Vol. 1, Sept., 1968, pp. 492-517. 



(TC203 .C6) 



A mathematical theory is presented about phenomena which occur 

 when groins are constructed. In this theory the coast is schematized 

 by two lines; one represents the beach, and the other the inshore. 

 Theory is based upon the following: (1) littoral transport is a 

 linear dependent of the angle of wave incidence, and (2) sand trans- 

 port perpendicular to the coast depends on the steepness of the profile. 



It was found that the influence of a groin system is threefold: 



(1) it reflects short-period beach processes on the adjacent areas, 



(2) retards erosion, and (3) gives lee-side scour. 



Key Words - System/Impermeable/Erosion/Theory/Accretion/Single/Trans- 

 port -normal/ 



117 



