Analysis of the action of a groin system through the 14 months 

 following construction is reported. Six surveys were made during 

 this period which included onshore elevations to the bluff line 

 and offshore soundings to about 7-foot depths. Wind records for 

 investigation were studied, and hindcasts of wave conditions made. 

 Analysis reveals that the cumulative volume of impoundment at the 

 system may be expressed approximately. Tables of impoundment 

 volumes are included as well as an energy index, and the relation- 

 ship is discussed. Filling patterns of the system are recorded. 



Key Words - Great Lakes/Cantilever/Steel/Accretion/Low/Long/System/ 

 Impermeable/ 



"Area 7, Housatonic River to Ash Creek, 

 Conn., Beach Erosion Control Study" 

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

 ment No. 248, 83rd Congress, 2nd Session, 

 Oct. , 1953. 



Key Words - House Document/Not Annotated/ 



5310GR0004 



"Coastal Protection, Review of Methods for 



Defence" 



Bruun , P . , The Dock and Harbour Authority , 



London, Vol. 34-35, Nov., Dec, 1953, 10 pp. 



(V.F. 1289 11/53) 



5311GR0001 



The author discusses and defines different types of groins, 

 stating that they have often done more harm than good. Given also 

 are conditions under which groins should or should not be built, 

 and their long- and short-range influences. 



Key Words - L-groins/T-groins/Z-groins/Comer-groins/Misc-plan/ 

 Pi ling/Single/System/ Fie Id/Europe/Timber/Economics/ 

 Eros ion/Accretion/ Impermeable/ 



"Appendix II, Coast of California, Point 

 Mugu to San Pedro Breakwater, Beach Erosion 

 Control Study" 



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

 ment No. 277, 83rd Congress, 2nd Session, 

 Nov., 1953. 



5311GR0002 



Key Words - House Document/Not Annotated/ 



56 



