Please use this identifier to cite or link to this item:
https://hdl.handle.net/11681/27245| Title: | St. Johns County, Florida, South Ponte Vedra Beach, Vilano Beach, and Summer Haven Reaches, Coastal Storm Risk Management Project : Final Integrated Feasibility Study and Environmental Assessment, Appendix A, Engineering |
| Authors: | United States. Army. Corps of Engineers. Jacksonville District. |
| Keywords: | Hurricanes Storms Shore protection Flood control Environmental management Beach erosion Beach nourishment Saint Johns County (Fla.) |
| Publisher: | United States. Army. Corps of Engineers. Jacksonville District. |
| Abstract: | St. Johns County is located on the northeast coast of Florida approximately midway between the Florida-Georgia state line and Cape Canaveral. The County is bounded to the north by Duval County and to the south by Flagler County. St. Johns County has approximately 42 miles of coastal shoreline, with about 24 miles extending from the Duval County line to St. Augustine Inlet, about 14 miles from St. Augustine Inlet to Matanzas Inlet, and about 3 miles from Matanzas Inlet to the Flagler County line. South Ponte Vedra Beach and Vilano Beach (denoted SPV and Vilano throughout this appendix) are located on the north side of St. Augustine Inlet and are the focus of the present study (Figure A - 1). Anastasia State Park and St. Augustine Beach are located south of the St. Augustine Inlet. Summer Haven, initially part of the study but screened out due to reasons described in the main report, is located south of Matanzas Inlet. A Federal Shore Protection Project is authorized for a contiguous portion of St. Augustine Beach and currently uses St. Augustine Inlet as a borrow source. The purpose of this study is to assess the feasibility of providing Federal Coastal Storm Risk Management (CSRM) measures to additional portions of the St. Johns County shoreline. Historically, beaches of St. Johns County have generally experienced substantial erosion due to the combined effects of winds, waves, and tides. The severity of erosion in some areas is indicated by the presence of protective structures such as seawalls and revetments, and the absence of any beach seaward of those protective structures. The objectives of the engineering analysis include the quantification of existing beach erosion and the design of corrective measures. Quantification efforts involve analysis of historical shoreline positions, estimation of alongshore sediment transport rates, and prediction of cross-shore losses of beach material due to storms. The results of those efforts serve as the basis for the design and analysis of beach nourishment measures, which could be employed to reduce storm damage in the project area. |
| Description: | Feasibility Study/Environmental Assessment |
| Rights: | Approved for Public Release; Distribution is Unlimited |
| URI: | http://hdl.handle.net/11681/27245 |
| Size: | 58 pages/7.501 Mb |
| Appears in Collections: | Environmental Documents |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| StJohns_FeasibilityStudy_EA_Final_AppendixA_Engineering_20170315_508.pdf | 7.68 MB | Adobe PDF |  View/Open |