other morphodynamical effects generally overpower any stabilizing effect of dewatering for fine sediments, although some mixed results on upper beach accretion associated to erosion in middle and lower have been reported. This is in line with the current knowledge of swash-groundwater sediment dynamics which states that the effects of in/exfiltration flows through sand beds in the swash zone associated to modification of swash boundary layer and relative weight of the sediment and overall volume loss of the swash tongue are generally lower than other drivers, at least for fine sediments such as sand Recruitment Appropriately constructed and sited fences can capture blowing sand, building/restoring sand dunes, and progressively protecting the beach from the wind, and the shore from blowing sand. Dynamic revetment Another approach is to create dynamic revetment, a berm using unmortared, unsorted rocks (cobbles). Seeds scattered among the cobbles can germinate to anchor the cobbles in place. Sand can collect and recreate a sandy beach. Leaving the rocks loose allows them to migrate and settle in a stable location. Separately, near the highest average waterline, a second berm around a meter in height can accelerate the recovery. This approach was employed at Washaway Beach in North Cove, Washington. Once the berms were in place, in one year the beach expanded by some 15 meters, and continued to grow. Projects in Washington, California, Europe, and Guam have adopted aspects of the techniques. Projects The setting of a beach nourishment project is key to design and potential performance. Possible settings include a long straight beach, an inlet that may be either natural or modified and a pocket beach. Rocky or seawalled shorelines, that otherwise have no sediment, present unique problems. Cancun, Mexico Hurricane Wilma hit the beaches of Cancun and the Riviera Maya in 2005. The initial nourishment project was unsuccessful at a cost of $19 million, leading to a second round that began in September 2009 and was scheduled to complete in early 2010 with a cost of $70 million. The project designers and the government committed to invest in beach maintenance to address future erosion. Project designers considered factors such as the time of year and sand characteristics such as density. Restoration in Cancun was expected to deliver of sand to replenish of coastline. Northern Gold Coast, Queensland, Australia Gold Coast beaches in Queensland, Australia have experienced periods of severe erosion. In 1967 a series of 11 cyclones