Challenges in using science-based shoreline setbacks: Examples from South Carolina

Slagel, Matthew and Davis, Braxton (2010) Challenges in using science-based shoreline setbacks: Examples from South Carolina. In: Shifting Shorelines: Adapting to the Future,The 22nd International Conference of The Coastal Society , June 13-16, 2010 ,Wilmington, North Carolina,

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Official URL: http://nsgl.gso.uri.edu/coastalsociety/TCS22/paper...

Abstract

Beachfront jurisdictional lines were established by the South Carolina Beachfront Management Act (SC Code §48- 39-250 et seq.) in 1988 to regulate the new construction, repair, or reconstruction of buildings and erosion control structures along the state’s ocean shorelines. Building within the state’s beachfront “setback area” is allowed, but is subject to special regulations. For “standard beaches” (those not influenced by tidal inlets or associated shoals), a baseline is established at the crest of the primary oceanfront sand dune; for “unstabilized inlet zones,” the baseline is drawn at the most landward point of erosion during the past forty years. The parallel setback line is then established landward of the baseline a distance of forty times the long-term average annual erosion rate (not less than twenty feet from the baseline in stable or accreting areas). The positions of the baseline and setback line are updated every 8-10 years using the best available scientific and historical data, including aerial imagery, LiDAR, historical shorelines, beach profiles, and long-term erosion rates. One advantage of science-based setbacks is that, by using actual historical and current shoreline positions and beach profile data, they reflect the general erosion threat to beachfront structures. However, recent experiences with revising the baseline and setback line indicate that significant challenges and management implications also exist. (PDF contains 3 pages)

Item Type: Conference or Workshop Item
Title: Challenges in using science-based shoreline setbacks: Examples from South Carolina
Personal Creator/Author:
CreatorsEmail
Slagel, MatthewSlagelMJ@dhec.sc.gov
Davis, Braxton
Date: 2010
Funders: National Oceanographic and Atmospheric Administration, U.S. EPA Coastal Management Branch, U.S. Geolgocial Survey, NOAA Sea Grant
Event Title: Shifting Shorelines: Adapting to the Future,The 22nd International Conference of The Coastal Society
Event Type: Conference
Event Location: Wilmington, North Carolina
Event Dates: June 13-16, 2010
Issuing Agency: The Coastal Society
Uncontrolled Keywords: TCS22
Subjects: Biology
Environment
Planning
Item ID: 3951
Depositing User: Cynthia Murray
Date Deposited: 29 Jul 2010 12:54
Last Modified: 29 Sep 2011 16:43
URI: http://aquaticcommons.org/id/eprint/3951

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