Section 227-National Shoreline Erosion Control Development and Demonstration Program. Coastal Processes Analysis. Dade County and 63rd Street Hot Spot

摘要

On August 29, 2001, the U.S. Army Corps of Engineers (USACE), Jacksonville District authorized Coastal Systems International (Coastal Systems) to perform Phase I investigations for the 227 Demonstration Project at the 63rd Street Erosional Hot Spot, City of Miami Beach, Miami-Dade County. The Phase I investigations consisted of an analysis of beach erosion and sand transport, both cross-shore and longshore, for most of Miami-Dade County and in the vicinity of the 63rd Street Hot Spot. Based on these investigations, basic design parameters for a demonstration project were determined. This work will also provide calibration data for Phase 11 sediment transport modeling, and the investigations will be the basis for detailed shore protection design parameters for the demonstration project. The 63rd Street erosional hot spot demonstration project site along the City of Miami Beach shoreline provides an excellent opportunity to address 'erosional hot spot' issues which are being experienced in many Federal shore protection projects. Beach fill hot spots are problematic in that they may trigger early project renourishments thereby increasing project costs. To address these issues, Section 227 of the Water Resource and Development Act of 1996 (WRDA 96) authorized the National Shoreline Erosion Control Development and Demonstration Program (NSECDDP). The Program is aimed at advancing the state-of-the-art and innovative shore protection solutions on the open coast in coastal shoreline protection. The Section 227 legislation provides a vehicle by which shore protection devices, designs, and methods can be constructed, monitored and evaluated.