Washington County Flood Maps (Oregon)

Assessors in Washington County, Oregon are charged with determining the value of taxable property within a county or local area. These property value assessments are used to levy property taxes. In addition to tax assessment, assessors maintain detailed county and local maps that show parcel boundaries and buildings, including flood maps. These Washington County flood maps show flood zones, flood damage, topography, and drainage patterns, which can impact property values. Washington County Assessors may make flood maps available on their websites.

Washington County Assessor's Office Hillsboro OR 155 North 1st Avenue 97124 503-846-8741


Building Departments in Washington County, Oregon ensure the construction of safe buildings by creating and enforcing building codes. As part of this process, Washington County Building Departments use flood maps to establish standards for building construction and resistance to natural disasters. Many maintain and evaluate flood maps, which include information on Washington County flood zones, flood hazards, topography, soil composition, and flood drainage patterns. These maps may also include information on building codes and regulations related to flooding. These flood maps may be available online through the Building Department.

Beaverton Building Department Beaverton OR 4755 Southwest Griffith Drive 97005 503-526-2403

Beaverton Zoning Beaverton OR 4755 Southwest Griffith Drive 97005 503-526-2420

Cornelius Building Department Cornelius OR 1300 South Kodiak Circle 97113 503-357-7099

Hillsboro Planning Department Hillsboro OR 150 East Main Street, # 4th 97123 503-681-6153

Tigard Building Department Portland OR 13125 Southwest Hall Boulevard 97223 503-639-4171

Tualatin Planning Department Tualatin OR 18880 Southwest Martinazzi Avenue 97062 503-691-3026

Washington County Building Department Hillsboro OR 155 North 1st Avenue 97124 503-846-3470

Washington County Zoning Hillsboro OR 150 North 1st Avenue, # 300 97124 503-846-2887

Wilsonville Planning Department Wilsonville OR 29799 SW Town Center Loop E 97070 503-682-4960

Archives in Washington County, Oregon collect and store documents and other records that have historic value. Most archives also contain local Washington County maps, including flood maps. These flood maps include Washington County flood zones, topography, and soil composition. They may also show drainage patterns and flood hazards. Archives may also have historical flood maps that show major floods from the past as well as Washington County flood plan improvements. Many archives are housed within libraries, and archives may provide online access to their flood map collections.

Hillsboro Records Archive Hillsboro OR 250 Southeast 10th Avenue 97123 503-681-6190

Washington County Records Archive Hillsboro OR 155 North 1st Avenue 97124 503-846-8751


Clerks in Washington County, Oregon keep public records for a county or local government, including a number of different types of documents. As part of their duties, Clerks maintain detailed maps, including Washington County flood maps. These maps contain flood zone information, flood hazards, topography, rivers, lakes, and other bodies of water, as well as other flood-related information. Clerks may also keep Washington County historical flood maps. These flood maps may be available through the Clerk's website.

Washington County Clerk Hillsboro OR 155 North 1st Avenue 97124 503-846-8843


Recorders of Deeds in Washington County, Oregon ensure the accuracy of property and land records by maintaining real estate ownership documents. In addition to property records, Recorders of Deeds also have detailed county and local maps that show property lines and building information, including flood maps. These flood maps show flood zones, topography, soil composition, and flood hazards, as well as other information related to Washington County floods. Washington County Recorders of Deeds may make flood maps available on their websites.

Washington County Recorder of Deeds Hillsboro OR 155 North 1st Avenue 97124 503-846-8752