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Three-dimensional model of the phase one wetland restoration area on Scotch Bonnet Island.

The lab used field surveys to verify and correct existing lidar-derived DEM elevations. Existing aerial-based elevation data for salt marshes typically have a high degree of uncertainty in elevation measurements.

The inputs for mid-term sea level rise were taken from Rutgers' 2019 “New Jersey’s Rising Seas and Coastal Storms” report. Bay-wide water elevation changes were also derived from gauge data over a 14-year timeframe.

Existing state landcover data excluded high marsh and mudflat habits. A custom high-resolution landcover dataset was created by augmenting existing satellite-based multispectral data with UAV-based multispectral data

The custom landcover was a key parameter for the Sea Level Affecting Marshes Model (SLAMM) simulations.

Mudflat and marsh loss simulations were run for 2030 and 2050 using two of Rutgers’ “Likely Range” scenarios.

2050 SLAMM simulation using the ~50% scenario.

2030 SLAMM simulation using the <17% scenario.

2050 SLAMM simulation using the <17% scenario.

Conceptual marsh placement and nature-based storm protection Option 1.

Conceptual marsh placement and nature-based storm protection Option 2.

Conceptual marsh placement and nature-based storm protection sections.

Jenkins Sound Resiliency Plan

New Jersey coastal hazards have grown since the 1980s due to climate change. The state is fortunate to have an array of ecologically significant mudflat and saltmarsh habitats that help mitigate some of these climate-induced threats. New Jersey’s wetlands, for instance, prevented $430 million in storm damage during Hurricane Sandy. However, rapidly rising waters threaten these vital natural environments, which sustain the region's coastal habitats and communities. Restoration and conservation efforts are essential in ensuring these special, resilient places remain.

The EMLab is working with The Wetlands Institute (TWI) and New Jersey Department of Environmental Protection (NJDEP) to develop a multi-phase resiliency plan to help preserve and protect valuable marsh habitats in the greater Jenkins Sound area. The initial phase of this study involves data collection, cultural assessment, and simulation modeling for the bay area. Initial implementation plans include sediment placement and nature-based infrastructure improvements for the Scotch Bonnet Island area.

Partners for this phase of work also include the U.S. Army Corps of Engineers, Philadelphia District.

Led By: Keith VanDerSys and Sean Burkholder

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Jenkins Sound Resiliency Plan

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