volume. Volume 2 (Kraus, Gravens, and Mark 1988) contains the associated 
appendices with supplementary analyses and data. 
5. The wave refraction study (Task a) encompassed a hindcast of the 
wave climate and refraction analyses for the existing bathymetry and hypo- 
thetical bathymetries as modified by possible beach fill borrow dredging in 
the offshore. Task b involved development of a numerical model of long-term 
shoreline change, based on longshore sand transport rates calculated by use 
of wave information from Task a. The shoreline change model allows inclusion 
of numerous groins and a seawall already located on the coast, as well as 
additional groins, removal and modification of existing groins, and placement 
of beach fill. 
6. The beach erosion numerical model developed in Task ¢ permits an 
estimation of storm-induced erosion of material placed to protect the seawall 
at the study site. This model was specifically adapted for the present study 
and incorporates a boundary condition to account for the presence of the sea- 
wall. Recession-recurrence curves were calculated through use of storm sta- 
tistics available from Task d. Task d involved the addition of storm ensemble 
enhancements to a previous CERC study, the "Fire Island to Montauk Point Storm 
Surge Study (FIMP)" (Prater, Hardy, and Butler in preparation; Prater, Butler, 
and Hardy in preparation; Butler and Prater 1987), and computation of stage- 
frequency relationships for tidal and storm events in the Navesink and 
Shrewsbury Rivers. 
Organization of this Report 
7. This report is divided into six parts. Part I gives an introduc- 
tion. Part II provides a short review of related literature, summarizes 
important previous work, and describes present conditions at the project 
site. Parts III - VI respectively present the results of the four individual 
Study tasks listed in paragraph 4. Appendices given in Volume 2 contain sup- 
plementary information on the wave hindcast statistics (Appendix B), represen- 
tative wave refraction patterns (Appendix C), historical shoreline and beach 
profile change (Appendix D), open-ocean borrow sites (Appendix E), wave re- 
fraction changes at borrow sites (Appendix F), and back-bay stage-frequency 
curves (Appendix G). The appendices contain considerable background data and 
