Ko Olina Lagoons Beach Management

The Ko Olina Resort includes as a primary attraction four man-made beaches and swimming lagoons along the west-facing coastline that are heavily used by both the public and guests of the resort.  Sea Engineering was contracted to develop, and acquire permits for, a long-term beach maintenance and management plan.  The permitted plan authorizes the following activities for a 10-year period:

1. Nearshore sand dredging and placement – Heavy machinery including excavators and hydraulic pumps will be employed to redistribute between 1,000 to 3,250 cy of sand from the lagoon floors, typically between 20-60 feet from the shoreline, to the subaerial beach profile. Pump slurry will be delivered to a dewatering basin that is excavated within the beach face.  This activity will be conducted on an 18 to 36 -month cycle.
2. Sand Pushing – A small bulldozer, typically a Bobcat, will be utilized to move surface sand on the beach from low to high on the profile. Sand pushing operations will be ongoing, to allow scheduling in each lagoon to be based on occupancy and resort activities.