BEACH EROSION STUDIES 



The principal types of beach erosion control studies of specific 

 localities are the following: 



a. Cooperative studies (authorization by the Chief of Engineers 

 in accordance ifTith section 2, River and Harbor Act approved 

 3 July 1930) o 



bo Preliminary examination and surveys (Congressional author- 

 ization by reference to locality by name), 



c. Reports on shore line changes which may result from improve- 

 ments of the entrances at the mouths of rivers and inlets 

 (Section 5,, Public Law Noo I4O9, 7Uth Congress). 



do Reports on shore protection of Federal property (authoriza- 

 tion by the Chief of Engineers). 



Of these types of studies j, cooperative beach erosion studies are 

 the type most frequently made when a comtnunity desires investigation of its 

 particular problem. As these studies have greater general interest^ in- 

 formation concerning studies of specific localities contained in these 

 quarterly bulletins will be confined to cooperative studies. Information 

 about oliier types of studies can be obtained upon inquiry to this office. 



Cooperative studies of beach erosion are studies made by the Corps 

 of Engineers in cooperation with appropriate agencies of the various 

 States by authority of Section 2 of the River and Harbor Act approved 

 3 July 1930 o By executive ruling the cost of these studies is divided 

 equally between the United States and the cooperating agency. Information 

 concerning the initiation of the cooperative study may be obtained from 

 any District Engineer of the Corps of Erigineers. After a report on a 

 cooperative study has been transmitted to Congress, a summary thereof is 

 included in the next issue of this bulletin. A sumjaary of a report 

 transmitted to Congress since the last issue of the Bulletin and list of 

 authorized cooperative studies follows 



SUM^mRY OF REPORT TRAjmSMITTED TO CONGRESS 



Illinois Shore of Lake Michigan 



The study area comprises the entire Lake Michigan shore line of 

 Illinois J a length of 58 miles at the south end of the west side of Lake 

 Michigano This stretch of shore lies in Cook and Lake Counties which in- 

 clude the highly industrialized cities of Chicago and Waukegan^ and in- 

 tervening extensively developed urban and suburban residential areas. The 

 population of these two counties exceeds ii^OOO^OOO. Seasonal variations 

 in the population are unimportant. 



