required in this locality, and that a berra width of 100 feet at an elevation 

 of 5.5 feet, or 25 feet at an elevation of 10 feet in front of bluffs, would 

 be adequate. The Board also believed that groins may be needed at Keansburg 

 for shore protection as well as for hurricane protection, and included them 

 in the single -purpose shore protection plan for deferred construction when 

 experience indicates their justification. 



The Beach Erosion Board recommended adoption of projects for the shores 

 of Madison and Matawan Townships, Union Beach and Keansburg, New Jersey to 

 authorize Federal participation in the costs of plans for protection of the 

 shores, comprising artificial placement of beach fill to provide for a beach 

 berm 100 feet wide at an elevation of 5.5 feet above mean sea level, or 

 25 feet wide at an elevation of 10 feet above mean sea level in front of 

 bluffs, and three groins at Keansburg as deferred construction when experi- 

 ence indicates the need thereof, with such modifications thereof as may be 

 considered advisable by the Chief of Engineers. The foregoing recommended 

 plans may be constructed separately or as a part of dual-purpose plans for 

 Madison Township and Keansburg recommended by the Board of Engineers for 

 Rivers and Harbors, if subsequently authorized. Federal assistance in the 

 single-purpose shore protection plans would entail contribution of funds 

 presently estimated to amount to 28.2 percent of the initial construction 

 costs of the beach widening in the four sections indicated. The Board of 

 Engineers for Rivers and Harbors and the Chief of Engineers concurred in the 

 conclusions and recommendations of the Beach Erosion Board. The Chief of 

 Engineers recommended dual-purpose plans, substantially as developed by the 

 District Engineer, for Madison Township and Keansburg, and single-purpose 

 shore protection plans at Matawan Township and Union Beach. 



STATE OF CALIFORNIA. 



The purposes of the investigation were to determine the most effective 

 and economical means of preventing further erosion of the shore line be- 

 tween the Ventura and Santa Clara Rivers, and specifically to reexamine the 

 findings regarding the Pierpont Bay area from a previous report. The study 

 area between the Ventura and Santa Clara Rivers is about 4 miles in length. 

 It includes San Buenaventura Beach State Park with a frontage of about 2.3 

 miles, about 0.9 mile of which is a narrow strip of park area fronting 

 private residential development in the Pierpont area. An existing beach 

 erosion control project authorized in 1954 for the State Park provides for 

 three groins to protect the main or developed portion of the park. These 

 groins were not built at the time of the study. 



The tides in the area are diurnal, the diurnal range being 5.3 feet 

 and the mean range 3.7 feet. The principal wave action affecting the area 

 is from the west and west-northwest. The predominant direction of littoral 

 transport is downcoast (southeastward). A relatively constant supply of 

 material arrives at the problem area by littoral movement along the shore 



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