TABLE 4-6 



ASSUMED SUBSIDENCE AND ACCRETION RATES 



Location 



VA 

 MD 



VA 



FL 



FL 



, LA 

 , LA 



LA b/ 

 LA b/ 



1975 



Accretion Rate (mm/yr) a/ 



2 



2 



5 



2 



2 



2 



2 



2 



2 



2 



5 



5 



5 



5 



5 



2 



2 



2 



2 



5 



5 



2 



5 

 10 



5 



5 

 2.5 

 10 



5 

 10 

 10 



2 

 10 

 10 

 10 



2 

 10 

 10 

 10 

 10 







5 



2 

 10 



2 



5 



2 



2 



2 



2 



2 

 10 



2 



2 



2 



2 



2 



2025 



Maine Coast N 

 Maine Coast S 

 New Hampshire Coast 

 Massachusetts Coast 

 Cape Cod N 

 Cape Cod S 

 Narragansett 

 Long Island Sound CN 

 E. Hampton, NY 

 Gardiner's Island, NY 

 Long Island W, NY 

 Atlantic City, NJ b/ 

 Tuckerton, NJ b/ 

 Delaware Bay, RI 

 Cape Henlopen, DE 

 Chesapeake E., MD 

 Chesapeake W. , MD 

 Potomac River E 

 Potomac River W 

 Chincoteague , VA b/ 

 Delmarva, VA 

 Chesapeake Bay S 

 Roanoke Island, NC b/ 

 Albemarle E . , NC 

 Albemarle W. , NC 

 N. Charleston, SC 

 Charleston, SC b/ 

 Sapelo Sound, FL 

 Matanzas , FL 

 Florida Keys 

 10,000 Islands, FL 

 Cntrl. Barrier Coast, 

 Drowned Karst, FL 

 Apalachicola N., FL 

 Apalachicola S . , 

 Fort Walton, FL 

 Barataria Bay N. , 

 Barataraia Bay S. 

 Central Islands N 

 Central Islands S 

 Atchafalaya N., LA b/ 

 Atchafalaya S., LA b/ 

 Chenier Plain N. , TX 

 Chenier Plain S., TX 

 Aransas NVR N. , TX 

 Aransas NVR S . , TX 

 Texas Barrier Island 

 Imperial Beach, CA 

 Del Mar, CA 

 Oxnard, CA 

 St. Ynez, CA 

 SF Bay N. , CA 

 SF Bay S. , CA b/ 

 Coos Bay, OR b/ 

 Gray's Harbor, WA b/ 

 Puget Sound N. , WA 

 Puget Sound S . , WA 



aJ Values in () are for low sea level rise; 

 are the same. A dash means no change. 



b/ Development protected. 



2050 2075 2100 



2(5) 



5(2) 



10(5) 



2(5) 



5(10) 



2(5) 

 2(10) 



25 



5(2) 



5(10) 

 5(2) 



10 



5 



2(5) 

 5 



2 



10 



5 



62(2.5) .02(.08) 5(0) 



10 



1(2.5) 

 1(2.5) 

 5 



2 

 2(5) 



1 



5 

 2(5) 



5 

 2.5 



2(10) 



5(10) 

 5(10) 



1 



1 

 5(2) 

 5(10) 



Subsidence 

 (mm/yr) 















































1.2 



1.2 



2.9 



1.8 

 1.6 



1. 

 1. 



2. 



1, 











1. 



1. 







































11 

 11 



4 



4 



3.5 

 3.5 



3.5 



3 

 3 

 3 

 

 

 

 

 

 

 

 

 

 

 



5(2) 5 



one value only indicates that the low and high values 

 104 



