merits of permeable groins. 



Key Words - Permeable/Great Lakes/Scour/Erosion/Low/Concrete/Piling/ 

 S. M. Wood/System/Structural-design/Economics/ 



"Effectiveness of Permeable Type Groins Used 3911GR0001 



for Beach Protection at Shorewood, Wise, and 



Other Cities Along the West Shore of Lake 



Michigan" 



Holcombe, W. H. , Nov., 1939, U. S. Army Corps of 



Engineers, Milwaukee, Wisconsin, Unpublished 



Report. (V.F. 3080 12/38) 



Two letters and photographs review 1939 conditions and effectiveness 

 of permeable groins on Lake Michigan. 



Key Words - Great Lakes/Misc-plan/Structural-design/Permeable/System/ 

 1900- 1949/Steel/Pi ling/Concrete/Timber/ Impermeable/Long/ 

 Short/Hi gh/Rubble-mound/Field/ 



"Erosion and Palmetto Groins at North Point, 3912GR0001 



St. Augustine, Florida" 



Simkins, T. D., Dec, 1939, U. S. Army Corps 



of Engineers, Jacksonville District, 



Unpublished Report. (V.F. 3093b) 



Letters and photographs give the history of erosion at North Point, 

 where the North Point, St. Augustine shore has been receding since 1935. 

 Four cabbage palmetto (timber) groins constructed in 1937 and a stone 

 groin built in 1889 are evaluated. 



Key Words - S. Atlantic/Photographic/1900-1949/Low/Impermeable/High/ 

 Timber/Eros ion/ Field/Single/System/Concrete/Pi ling/ 



"Beach Erosion Studies" 4000GR0001 



Brown , E . I . , Transactions of the American 

 Society of Civil Engineers , Vol. 105, 1940, 

 pp. 869-918 



Items of information considered necessary in a comprehensive beach 

 erosion study, the reasons for desiring each particular item, and some 

 general observations on design of protective works are offered. The 

 presentation is made for two reasons: (1) that engineers interested in 

 beach protection may have the advantage of experience gained by the 



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