This report summarizes results of simulations with the model Hydro-MEM (the combined Hydrodynamic and Marsh Equilibrium Model) of the evolution of saltmarshes in response to future sea-level rise in four areas: 1) the coastline from the mouth of the Chesapeake Bay north to the Virginia-Maryland border (“VA”); 2) the Virginia-Maryland border north to Ocean City Inlet (“MD”); 3) the New Jersey coastline surrounding Forsythe National Wildlife Refuge (“NJ”); and 4) Plum Island Estuary, Massachusetts (“PIE”). These sites contain land protected and regulated by the U.S. Fish and Wildlife Service. Because ecosystems do not stop at political boundaries, however, these study sites also include surrounding areas that are...