Reach 5

Reach5 Pic.jpgProgram Details

270 Feet South OF Banyan Road to 170 Feet North of Widener’s Curve

FDEP Range Monument R-102+300 to R-110+100 (9,065 feet)

FDEP Designation: Critically Eroded

Current Action

  • Reach 5 continues to benefit from repeated restorations of Reaches 3 and 4.  Continued evaluation and monitoring of existing coastal structures as requested by the SPB.
  • Continue physical monitoring per BMA-requirement.

2018 Townwide Physical Monitoring Report, January 2019

Reach 5: (R-102+300 to R-110+100)

Over the current monitoring period, Reach 5 has experienced a net average shoreline recession of 21.5 feet, with losses occurring throughout the reach. Recession was greatest in the northern part of the reach with 37.85 feet at R-105 and gradually diminishing to the south with a measured recession of 0.3 feet at R-110. The reach exhibited a net volumetric loss of 326,888 CY. Losses were consistent throughout the reach. Small gains above MHW were only observed in the southern portion of the reach between R-109 and R-111. Gains of 103,009 CY were observed in the offshore, between -13.1 feet and the Depth of Closure further diminishing the movement of sand offshore.

Long term, this area has experienced a net shoreline advance of 41.3 feet since 1990 and has gained approximately 439,769 CY (above -26.2 feet NAVD) throughout the entire shoreline segment. Gains in shoreline position and volume are directly attributable to the movement of material into Reach 5 from the Mid-Town beach projects within Reaches 3 and 4. The lack of sand within the Mid-Town segment contributes to the recession of shoreline within this reach. Lacking regular renourishment of the Mid-Town project, this reach would likely revert to a net erosion/recession condition consistent with conditions present prior to the initiation of the beach nourishment program.

FDEP Strategic Beach Management Plan, Southeast Atlantic Coast Region, May 2018

Strategy: Construct restoration projects in environmentally suited areas of Reach 5 and Reach 8.  Comply with BMA (2013).

Comprehensive Coastal Management Plan, 1998 Update

Proposed improvements include beach fill and a groin field at the south terminus of the reach.

Reach 5 Related Shore Protection Board Recommended Actions, November 2009

Groin Analysis 

Following the Groin Assessment performed, a Town consultant analyzed the functionality of the Town’s groin system. A plan to prioritize rehabilitation was developed for SPB consideration.

Status

Groin Rehabilitation for Reaches 2-6 has been permitted. This item is awaiting future Town Council consideration.

Dune Restoration

The SPB recognizes that Reach 5 has maintained a healthy beach due to the sand moving down from Reaches 3 and 4. The SPB may recommend adding sand into the beach and dune system in Reach 5. Placement of sand in the form of dunes will create a line of defense for the beachfront owners to improve the storm protection to South Ocean Boulevard. This action will add more sand to naturally be added into the littoral drift during a storm event, eventually bringing sand into the Reach 6 area.

STATUS

Physical Monitoring is to continue, per BMA-requirement.  No dune restoration projects are planned for Reach 5 per the most recent 10-Year Plan for the Coastal Management Program (for FY20).