Flood-Ebb SSC Differential and UVVR at Thompsons Beach and Stone Harbor, New Jersey

To evaluate restoration efforts of the Hurricane Sandy Coastal Resiliency Program, the U.S. Geological Survey (USGS) Woods Hole Coastal and Marine Science Center (WHCMSC) studied two marsh sites of coastal systems in southeast New Jersey that underwent restoration. Submerged sensors were deployed to measure water velocity, water quality, water level, and waves from September 2018 to September 2019 and March 2022 to May 2023 (Bales and others, 2024; https://doi.org/10.5066/P9Z0Z8DM). Water quality data collection included optical turbidity measurements that were calibrated to suspended sediment mass using in-situ, lab filtered water samples (De Meo and others, 2024; https://doi.org/10.5066/P9CS5U6N). Mean flood and mean ebb suspended sediment concentrations (SSC) were used to calculate the flood-ebb SSC differential at Thompsons Beach and Stone Harbor, NJ from September 2018 to September 2019 and March 2022 to May 2023. The flood-ebb SSC differential can be used as a marsh vulnerability metric, indicating sediment import or export. Unvegetated-vegetated marsh ratio (UVVR), another marsh vulnerability metric, was calculated for both sites from 2014 to 2018 using data from Couvillion and others (2022; https://doi.org/10.5066/P97DQXZP). The calculated UVVR is used to observe the annual change in vegetative cover at Thompsons Beach and Stone Harbor, NJ, which may be used to assess the stability of the marshes.

Data and Resources

Additional Info

Field Value
Last Updated March 12, 2024, 19:00 (UTC)
Created March 12, 2024, 15:54 (UTC)
Data Maintainer Robert Bales
Email Address rbales@usgs.gov
Metric Category Ecological
Metric Class Vegetation
Reporting Years 2018, 2015, 2017, 2016, 2014
States and Territories NJ
Measurement Stage Control, Monitoring
Restoration Activity Marsh