Table A1 



Chronological List of Geological and Engineering Events at Shinnecock Inlet, Long 



Island, New York 



Event 



Date 



Detail 



Source 



Early citation 



1755 



Seven inlets reported to be open east of Fire Island. 

 Shinnecock Inlet probably open before 1755, according to 

 Osborne (1970).' 



Leatherman and 

 Joneja 1980 



Storm 



Aug 19, 1788 



Reported to be a "most terrifying storm." Possibly a 

 hurricane, appears to have caused opening in Moriches 

 Bay. 



Leatherman and 

 Joneja 1980 



Storm 



Dec 23-24, 1811 



"The greatest blizzard of all time" caused severe damage to 

 barrier islands. 



Leatherman and 

 Joneja 1980 



Early citation 



1829 



Shinnecock Inlet shown open near the east end of the bay 

 according to Osborne (1970). 



Leatherman and 

 Joneja 1 980 



Early citations 



1830's 



Shinnecock Inlet shown open on 1938-1950 U.S. charts 

 according to Osborne (1970). 



Leatherman and 

 Joneja 1 980 



Barrier morphology 



1838 



USC&GS chart T-58 shows mainland at Quogue connected 

 to barrier by low marsh, suggesting no open waterway 

 between Quontuck and Shinnecock Bays. Bay shoreline is 

 smooth along Tiana Beach and the island is rather narrow 

 compared to present configuration. 



Leatherman and 

 Joneja 1980 



Inlet open 



Pre-1854 



USC&GS chart shows Shinnecock Inlet open south of 

 Rampasture, about 2.4 miles 2 west of present location. 

 Islands in this area now may represent former flood shoal. 

 Closed by May 1 889. 



Leatherman and 

 Joneja 1 980 



Hurricane 



Sep 8, 1869 



Hurricane resulting in "unusually severe damage" was "the 

 most severe storm since 1811." 



Leatherman and 

 Joneja 1980 



1884-1892 



Shinnecock and 

 Peconic Canal 



Cut through narrow neck of mainland between north end of 

 Shinnecock Bay and Great Peconic Bay (traces existed of 

 an earlier canal cut by Mongotucksee-Long Knife, Chief of 

 the Mohawks). Funds provided by NY State Legislature. 

 Purpose: flushing Shinnecock Bay to prevent stagnation 

 and improve water quality to renew fish, clam, and oyster 

 industries. Completed dimensions: 4,000 ft long, 58 ft 

 wide at water surface, 4% ft deep at low water. Project also 

 intended to include cutting an inlet through barrier island to 

 the Atlantic Ocean. 



Whitford 1906 



1896 



Tide gates 



Automatic tide gates built at south end of Shinnecock and 

 Peconic Canal to keep Shinnecock Bay water level high 

 and prevent erosion of banks and growth and decay of 

 vegetation . 



Whitford 1906 



(Sheet 1 of 5) 



References cited in this appendix can be found in the list of references following the main text. 



A table of factors for converting non-SI units of measurement to SI units can be found on page x. 

 A2 Appendix A Chronological List of Geological Events 



