In 1968, the 90th Congress authorized this national appraisal of shore erosion and shore protection. To satisfy the purposes of the authorizing legislation, a family of 12 related reports has been published. They are: Regional inventory reports; Shore protection guidelines; Shore management guidelines; and Report on the national shoreline study. This report presents an inventory of the physical characteristics, historical changes, and ownership and use of the coastal shorelines of Washington and Oregon, including major bays and estuaries.