Southeast Florida Sediment Assessment and Needs Determination (SAND) Study
Ousley, Jase D.; Kromhout, Elizabeth.; Schrader, Matthew W.; Lillycrop, Linda S.
Technical ReportAbstract: The Southeast Florida Sediment Assessment and Needs Determination (SAND) study quantifies domestic sand resources to support placement of planned, full-sized beach nourishment projects through the next 50 years (year 2062) for St. Lucie, Martin, Palm Beach, Broward, and Miami–Dade Counties. Sediment needs for each county were established based on project performance, accounting for storms, construction losses, and sea level change. Sediment source volume calculations considered new and existing offshore sediment sources in State and Federal jurisdictional waters. Both recent and historical geotechnical and geophysical data from -8 ft NAVD88 (North American Vertical Datum of 1988) to -90 ft AVD88 towards the Florida-Hatteras continental shelf slope break were taken into account during sediment assessment. Offshore sediment sources were divided into four categories: Proven, Potential, Unverified (volume contributing and volume non-contributing) and Depleted, depending on density and quality of geological data. Confidence levels of 90 percent, 70 percent, and 30 percent were applied in the volume assessment to the Proven, Potential and volume contributing Unverified categories, respectively. Contingencies were added to volume assessments for a vertical 2-foot buffer for all counties and for reef talus specific to Palm Beach County. Based on the needs determination with contingencies applied, it was found that 174,101,870 cubic yards of sediment are needed to support placement of planned, full-sized beach nourishment projects through 2062. With contingencies and confidence levels applied, it was found that 280,037,956 cubic yards exist offshore of Southeast Florida that meet the criteria for this study established for sand placement on Florida beaches. Therefore, currently known sediment resources for St. Lucie, Martin, Palm Beach, Broward, and Miami–Dade Counties exceed sediment needs by 100,000,000 cubic yards. NOTE: This.pdf file is very large. Allow you browser 5-6 minutes to download the file.
Coastal and Hydraulics Laboratory (U.S.)Engineer Research and Development Center (U.S.)
Nearshore sediment; Sand resources; Beach quality; Regional Sediment Management; Grain size analysis; Geotechnical data; Geophysical data; Beach nourishment; Sediment volume assessment; Southeast Florida; Southeastern Florida; Regional Sediment Management Program
ERDC/CHL TR ; 14-10.
Approved for public release; distribution is unlimited.
Showing items related by title, author, creator and subject.
Lambert, Samantha S.; Willey, Sheridan S.; Campbell, Tricia.; Thomas, Robert C.; Li, Honghai.; Lin, Lihwa.; Welp, Timothy L. (Coastal and Hydraulics Laboratory (U.S.)Engineer Research and Development Center (U.S.), 2013-08)
A guide for using geochemical methods in dredged material, sediment tracking, and sediment budget studies Wadman, Heidi M.; Perkey, David W.; Seiter, Jennifer M.; Chappell, Mark A. (Mark Allen); Lafferty, Brandon J. (Coastal and Hydraulics Laboratory (U.S.)Environmental Laboratory (U.S.)Engineer Research and Development Center (U.S.), 2017-06)Abstract: Effective regional sediment management has the potential to significantly reduce operating costs for the U.S. Army Corps of Engineers but only if the ultimate sources and sinks of coastal sediment are fully ...
Smith, Thomas D.; Lillycrop, Linda S. (Coastal and Hydraulics Laboratory (U.S.)Engineer Research and Development Center (U.S.), 2014-06)