and partial fill plans at 34,000 and 5,600 cubic yards respectively, 

 and considered a beach berm width of 25 feet to be adequate to prevent 

 erosion of the dunes or damage to the revetment along Surf Street. 

 The Board also stated its belief that closure of the gap at the shore 

 end of the Saco River north jetty should be considered for construction 

 regardless of any other measures which may be undertaken for protection 

 of the shore, and recommended that the closure be accomplished as soon 

 as practicable with Federal funds, when such funds become available for 

 maintenance of navigation structures. It also recommended that, subject 

 to their own determination of economic justification, local interests 

 consider adoption of plans of protection developed by the division 

 engineer, especially that for closure of the gap at the shore end of the 

 jetty, if this is not done by the Federal government, and the partial 

 beach fill plan with either a 50-foot or 25-foot berm width, and that 

 protection which may be provided by local interests be accomplished 

 generally as proposed by the division engineer. 



The Chief of Engineers concurred in the views and recommendations 

 of the Beach Erosion Board. 



CHATHAM. MASSACHUSETTS 



The town of Chatham is located in Barnstable County at the south- 

 east corner of Cape Cod, about 75 miles southeast of Boston. The 

 mainland portion of the town is located on relatively high glacial de- 

 posits. Morris Island, an undeveloped glacial deposit south of the 

 mainland, was connected to the mainland by a barrier beach for many 

 years prior to 1938. A breach through this beach, initiated during 

 the 1938 hurricane, was enlarged by storms in 1940 and 1944, Nauset 

 Beach is a sand spit extending southward about 10 miles from the east 

 side of the Cape Cod mainland in front of Pleasant Bay and the Chatham 

 mainland and presently ending about 1/2 mile east of Morris Island. 

 Monomoy Island is another extensive sand spit extending aboat 8 miles 

 southward from Morris Island and separating Chatham Roads, the northeast 

 corner of Nantucket Sound, from the Atlantic Ocean. Stage Harbor lying 

 between the Chatham mainland and Morris Island is used for fishing 

 and recreational purposes. Its entrance from Chatham Roads has been 

 dredged under a Federal navigation project. Chatham is a popular 

 summer resort area. The permanent population of the town of about 2,500 

 is greatly increased by summer residents and visitors. The shores of 

 the town affected by the considered plans are privately owned. 



The tides in the study area are semi-diurnal. The mean ranges in 

 the ocean and Chatham Roads are respectively 6.5 and 4.3 feet. The 

 maximum 10-year high waters at these locations are estimated to be 

 respectively 10.2 and 5.9 feet. Under conditions at the time the study 

 was made, due to the shoal entrance between Nauset Beach and Morris 

 Island, the mean-tidal range immediately east of the breach was about 

 4.7 feet. The maximum 10-year high water was estimated to be 6.5 feet. 

 The east shores of Cape Cod, Nauset Beach and Monomoy Island are exposed 

 to waves generated in the unlimited fetch of the North Atlantic. Under 



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