RCW 79.02.210: Maps and plats—Record and index—Public inspection.

All maps, plats, and field notes of surveys, required to be made by this title shall, after approval by the department, be deposited and filed in the office of the department, which shall keep a careful and complete record and index of all maps, plats, and field notes of surveys in its possession, in well bound books, which shall at all times be open to public inspection.