Federal participation in the cost of any proposed improvements » The division 

 engineer concurred in the conclusions and recommendations of tte district 

 engineer o 



The Board carefully considered the reports of the reporting officers. 

 It concurred generally in their views and recommendations, subject to the 

 following com^mentSo 



The Beach Erosion Board concluded that protection and improvement of 

 the shore by means of long groins would involve too long a period of time 

 before adequate filling of the groin system, ty natural processes would be 

 effected,, The plan could be supplemented by provision of artificial fill, 

 but no need exists for beaches of the width that would be provided in this 

 manner and such a supplerrented plan probably lacks economic justif icationo 

 Grading of the bluffs and armoring of th3 toe by a rock sea wall or cellular 

 steel pile bulkhead would provide positive protection for the bluff, but 

 would inhibit the use of the beach for recreational purposes o The Board con- 

 curred in the opinion of the reporting officers that an economical and pra- 

 cticable general plan of protection comprises grading and draining of the 

 bluffy revetting the toe of the slope and maintaining a narrow beach by means 

 of relatively short groins o This plan provides protection for the bluff as 

 well as an improved beach for recreational purposes » Filling of the groin 

 system depends on supply of material from erosion of the bluffs within the 

 study area and also those along the shore west of Chagrin River o If the 

 entire shore within the area is protected under this plan, filling will be 

 dependent on the supply of material from west of the area and will therefore 

 be slowo Ifore rapid filling could be effected if bluffs within the area 

 where protection is not essential are permitted to erode and supply material. 

 The Board considered the possibility that this plan may be beyond the means 

 of some private owners of shore frontage » Where this condition exists and 

 no structures are located so close to the top of the bluff as to necessitate 

 positive protection against recession of the bluff j a less costly modifica- 

 tion of this plan may be usedo This modification consists of short groins 

 a minimum of about 100 feet in length from the toe of the bluff on a spacing 

 of about 100 feeto Under this modified plan the slope armoring would be 

 omitted so the erosion of the bluff would supply material to fill the 

 groin systemo The groin would operate to retard erosion of the beach and 

 the beach might be expected to build up to protect the toe of the bluff. In 

 order to retain thte beach at the toe of the bluff 5 the inner ends of the 

 groins should be above the height reached by the highest waves. It appears 

 that a height of 10 feet above low water datura would meet this requirerrent . 

 The top of the groin should parallel the natural slope of the bottom and 

 adequate provision should be made against flanking of the groins. The 

 Board called attention to the desirability of coordinated action by owners 

 to protect a stretch of frontage under this plan. Although an individual 

 ovm^r of a short frontage could protect his property by a groin near his 

 east property line, the protection would not be permanent. Erosion would 

 eventually flank his property and necessitate furthsr protective treasures. 



The Beach Erosion Board recommended that private owners adopt one cf 

 the four plans of protection and improvement proposed by the district 

 engineer or that described in the previous paragraph, selecting that most 



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