DESCRIPTION: The feasibility study area includes the tidally influenced shorelines behind the barrier islands of Long Beach and Jones Beach in Nassau County, NY, for approximately 98 square miles. Hurricane Sandy caused the loss of seven lives, subjected 58,677 homes to flooding and storm surge damages estimated at about $469,000,000 and caused extensive power outages for several weeks. Purpose: Consistent with the NACCS report, the study will perform three overarching efforts: 1) Assess the problems, opportunities and future-without project conditions; 2) Assess the feasibility of implementing system-wide CSRM solutions,; and 3) If system-wide solutions are not feasible, assess the feasibility of implementing site-specific solutions, such as a combination of structural, nonstructural, and natural and nature-based features (NNBF), if appropriate.
The study will evaluate flood reduction measures for private residences, businesses, schools, infrastructure, roads, and evacuation routes for coastal emergencies. Potential solutions will involve making the at-risk areas more resilient to eliminate coastal storm damages and will take into account future environmental changes from climate change and sea level rise. The North Atlantic Coast Comprehensive Study (NACCS) identified nine focus areas for further evaluation for structural flood and non-structural risk reduction measures such as berms/levee and floodgates, flood proofing, relocation from the floodplain, land subsidence, and nature based infrastructure solutions such as vegetated dunes, and barrier island restoration. The cost-share sponsors are the New York Department of Environmental Conservation and the County of Nassau. Nassau County is subject to several natural hazards including coastal erosion, coastal wave action, storm surge, flooding, severe winds and severe weather events. These hazards, as well as others, are detailed in the Nassau County, New York Multi-Jurisdictional Natural Hazard Mitigation Plan (Nassau County, 2007) as well as records of historic events within Nassau County, estimated assets in hazard areas, estimated damages in hazard areas, and land use development trends in hazard areas. The impact of these natural hazards ranges from coastal storm damage to environmental impacts. Much of the shoreline of the study area has been physically altered by anthropogenic sources, creating a more stationary system than would normally exist in a barrier island and back bay system. This has resulted in changes to the natural sediment transport processes of the area and has had an impact on sensitive ecosystems and species which thrive on the barrier island habitats. Many tidally influenced areas of Nassau County are low elevation, developed with residential and commercial infrastructure, and subject to flooding during storms. Within the Nassau County Back-bays study area, the southern boundary of barrier islands are subject to coastal wave action, flooding, storm surge, and erosion. Back bays within the study area are subject to tidal flooding and storm surge
AUTHORIZATION: This study is authorized by Public Law 84-71, June 15, 1955 (69 Stat. 132).
STATUS: FCSA executed with NYSDEC 30 Sep 2016. Next follows coordination of the study with the Vertical Team and the external stakeholders, to include NEPA scoping and PMP development.
POC: Mark Lulka, Project Manager
U.S. Army Corps of Engineers, New York District
Programs and Project Management,
26 Federal Plaza,
New York, NY 10278
CONGRESSIONAL DISTRICTS: NY-2, NY-4
Current as of March 2017