1. Maps showing the effects of Hurricane Hugo on the Escollo de Arenas sand and gravel deposit, Vieques Island, Puerto Rico Yale Public content 1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Puerto Rico and Vieques Island.