As of 2015, the United States Geological Survey last updated their topographical quadrant maps of the Oregon coast in 2014. Download the maps for free at the USGS online store.
The topographical quadrant maps are produced by the USGS National Geospatial Survey Program, which began in 2009. The USGS updates the maps on a three year cycle linked to the U.S. Department of Agriculture's aerial imagery programs, basing the USGS maps on USDA images. These images are combined with USGS geospatial data to produce topographical maps accessible to the layperson. Future maps will include water resources, natural hazards and flood risks.