The following document can be cited as: Nuckols, W.H., P. Johnston, D. Hudgens, and J.G. Titus. 2010. “Maryland.” In James G. Titus and Daniel Hudgens (editors). The Likelihood of Shore Protection along the Atlantic Coast of the United States. Volume 1: Mid-Atlantic. Report to the U.S. Environmental Protection Agency. Washington, D.C. This report has undergone peer review as required by the Peer Review Handbook of the US Environmental Protection Agency for influential scientific information under the direction of Karen Scott, peer review leader for all products associated with Climate Change Science Program Synthesis and Assessment Product 4.1. The opinions expressed herein are solely those of the authors and do not necessarily represent the official opinion of the Environmental Protection Agency. The primary referring page for this report is http://risingsea.net/ERL/MD.html CHAPTER 6 MARYLAND Prepared by: William H. Nuckols IIIi Peter Johnstonii Daniel Hudgensiii and James G. Titusiv i W.H. Nuckols Consulting, Annapolis, Maryland ii Redman/Johnston Associates, Ltd., Easton, Maryland iii Industrial Economics, Incorporated, Cambridge, Massachusetts iv U.S. Environmental Protection Agency, Office of Air and Radiation, Washington, D.C. [ 512 TH E L I K E L I H O O D O F S H O R E P R O T E C T I O N I N M AR Y L A N D ] CONTENTS Summary ……………………………………………………………………………………...…516 Introduction..................................................................................................................... 523 Purpose of this Study ................................................................................................................................ 523 Caveat……................................................................................................................................................ 527 How to Read this Report…….................................................................................................................... 528 Methods ......................................................................................................................................................................529 Study Area................................................................................................................................................ 529 Draft Maps................................................................................................................................................. 530 County Stakeholder Review...................................................................................................................... 532 Map Scale ................................................................................................................................................ 533 Use of Experts .......................................................................................................................................... 533 Maryland Coastal Policies and Regulations................................................................. 535 Overview of Generalized State-wide Response to Sea Level Rise............................. 540 County Policies and Anticipated Response to Sea Level Rise .................................. 545 Western Shore Counties................................................................................................ 547 Harford County.......................................................................................................................................... 547 Baltimore County....................................................................................................................................... 551 Baltimore City............................................................................................................................................ 557 Anne Arundel County................................................................................................................................ 559 Calvert County .......................................................................................................................................... 564 St. Mary’s County...................................................................................................................................... 570 Charles County......................................................................................................................................... 574 Prince George’s County............................................................................................................................ 579 [ CONTENTS 513 ] Eastern Shore Counties..................................................................................................583 Cecil County..............................................................................................................................................583 Kent County...............................................................................................................................................588 Queen Anne’s County ...............................................................................................................................591 Talbot County ............................................................................................................................................596 Caroline County.........................................................................................................................................600 Dorchester County.....................................................................................................................................603 Wicomico County.......................................................................................................................................611 Somerset County.......................................................................................................................................614 Worcester County......................................................................................................................................619 Appendix A: Length of Shorelines by Likelihood of Shore Protection ......................624 Appendix B: Area of Land by Likelihood of Shore Protection ....................................638 Appendix C: Elevation Uncertainty................................................................................650 Appendix D: Summary of Data Sources........................................................................657 Credits and Acknowledgements ...................................................................................662 MAPS Map 6-1. Maryland: Likelihood of Shore Protection.........................................................................................520 Map 6-2. Harford County: Likelihood of Shore Protection ...............................................................................550 Map 6-3. Baltimore County: Likelihood of Shore Protection............................................................................556 Map 6-4. Baltimore City: Likelihood of Shore Protection .................................................................................558 Map 6-5. Anne Arundel County: Likelihood of Shore Protection .....................................................................563 Map 6-6. Calvert County: Likelihood of Shore Protection................................................................................569 Map 6-7. St. Mary’s County: Likelihood of Shore Protection ...........................................................................573 Map 6-8. Charles County: Likelihood of Shore Protection...............................................................................578 Map 6-9. Prince George’s County: Likelihood of Shore Protection .................................................................582 Map 6-10. Cecil County: Likelihood of Shore Protection .................................................................................587 Map 6-11. Kent County: Likelihood of Shore Protection..................................................................................591 Map 6-12. Queen Anne’s County: Likelihood of Shore Protection ..................................................................595 Map 6-13. Talbot County: Likelihood of Shore Protection ...............................................................................599 Map 6-14. Caroline County: Likelihood of Shore Protection............................................................................602 Map 6-15. Dorchester County: Likelihood of Shore Protection........................................................................610 Map 6-16. Wicomico County: Likelihood of Shore Protection..........................................................................613 Map 6-17. Somerset County: Likelihood of Shore Protection..........................................................................617 Map 6-18. Worcester County: Likelihood of Shore Protection.........................................................................623 [ 514 TH E L I K E L I H O O D O F S H O R E P R O T E C T I O N I N M AR Y L A N D ] FIGURES Figure 6-1. Lands Vulnerable to Sea Level Rise............................................................................................. 527 Figure 6-2. Locations of Counties in Maryland................................................................................................ 546 TABLES Table 6-1. Area of Land within 3.3 feet