Adoption of Erosion Rate-Based Setbacks in Maui, Hawaii: Observations and Lessons Learned

摘要

Inadequate construction setbacks over the last century on the Hawaiian island of Maui have led to a heavy reliance on shoreline armoring for structures now facing erosion crises. Along 56 miles of sandy shoreline, over 370 shore protection structures, such as seawalls, revetments and groins, have been built, nearly two thirds of which have been identified in an unpublished study as likely having a negative impact on the adjacent sandy beach. In November 2003, Maui County set a precedent for shoreline protection among the counties of Hawaii by being the first to adopt erosion rate-based construction setback rules. The process of producing erosion rate data and creating and adopting the new setback rules took over 5 years. A significant amount of input was received from the public through an advisory committee, public workshops and public hearings. Following the adoption of the new rules, planning and permitting situations have arisen that have revealed limitations in the rules. These issues are currently being addressed on a case-by case basis, but it is likely that further amendments will be necessary.