Lopez Island is in the southern San Juan Archapelego, in the San Juan Islands sub-basin
Lopez island is surrounded by 20 drift cells (PSNERP; SPU 7084-7103). Only four beaches have substantial levels of armoring where greater than 40% of bluff backed beach have some indicator of sedimentparticles of clay, silt, sand, gravel, or cobble, transported by water, are called sediment. supply degradation. Three of these beach systems are associated with the East shore of Fisherman's Bay. These units once contained 20 embayment shoreforms, four on the southern shores of the island have been lost. Five of those remaining are associated with Fisherman's Bay.