Contra Costa County Flood Maps

Search for Contra Costa County CA flood maps. Flood maps include information on flood zones, flood hazards, flood insurance rates, FEMA flood plans, topography, soil composition, drainage patterns, and more.


Assessors in Contra Costa County California 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 Contra Costa County flood maps show flood zones, flood damage, topography, and drainage patterns, which can impact property values. Contra Costa County Assessors may make flood maps available on their websites.

Contra Costa County Assessor's Office Martinez CA 2530 Arnold Drive 94553 925-313-7500


Clerks in Contra Costa County California 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 Contra Costa 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 Contra Costa County historical flood maps. These flood maps may be available through the Clerk's website.

Antioch City Clerk Antioch CA 200 H Street 94509 925-779-7007

Brentwood Clerk Brentwood CA 708 3rd Street 94513 925-516-5440

Contra Costa Clerk Richmond CA 100 South 37th Street 94804 510-374-3241

Contra Costa County Clerk Martinez CA 555 Escobar Street 94553 925-335-7800

Hercules City Clerk Hercules CA 111 Civic Drive 94547 510-799-8215

Oakley City Clerk Oakley CA 3231 Main Street 94561 925-625-7000

Pinole City Clerk Pinole CA 2131 Pear St 94564 510-724-8928

Pleasant Hill City Clerk Pleasant Hill CA 100 Gregory Lane 94523 925-671-5237

Richmond City Clerk Richmond CA 450 Civic Center Plaza 94804 510-620-6513

San Pablo City Clerk San Pablo CA 1 Alvarado Street 94806 510-215-3005


Building Departments in Contra Costa County California ensure the construction of safe buildings by creating and enforcing building codes. As part of this process, Contra Costa 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 Contra Costa 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.

Brentwood Permits Brentwood CA 104 Oak Street 94513 925-516-5406

Brentwood Planning Department Brentwood CA 118 Oak Street 94513 925-516-5405

Clayton Zoning Clayton CA 6000 Heritage Trl 94517 925-673-7340

Concord Permits Concord CA 1950 Parkside Drive 94519 925-671-3075

Contra Costa Building Department Martinez CA 651 Pine Street 94553 925-646-4108

Contra Costa Planning and Zoning Department Martinez CA 651 Pine Street 94553 925-335-1381

Danville Planning Department Danville CA 510 La Gonda Way 94526 925-314-3310

El Cerrito Planning Department El Cerrito CA 10890 San Pablo Avenue 94530 510-215-4330

Martinez Zoning Martinez CA 525 Henrietta Street 94553 925-372-3515

Moraga Planning Department Moraga CA 329 Rheem Boulevard 94556 925-888-7040

Orinda Planning Department Orinda CA 14 Altarinda Road 94563 925-253-4211

Pinole Building Department Pinole CA 2131 Pear Street 94564 510-724-8914

Pinole Planning Department Pinole CA 2131 Pear Street 94564 510-724-9014

Richmond Building Department Richmond CA 450 Civic Center Plaza 94804 510-620-6868

Richmond Planning and Zoning Department Richmond CA 1401 Marina Way South 94804 510-620-6706

San Pablo Zoning San Pablo CA 13831 San Pablo Avenue 94806 510-215-3030

San Ramon Building Department San Ramon CA 2401 Crow Canyon Road 94583 925-973-2582

San Ramon Building Department San Ramon CA 2401 Crow Canyon Road 94583 925-973-2580

Walnut Creek Zoning Walnut Creek CA 1666 North Main Street 94596 925-256-3558


Emergency Services in Contra Costa County California manage emergency preparations, responses, and recovery at different levels of government. They may handle natural disasters, severe weather incidents, and a number of other emergency situations. As part of their responsibility for preparedness, Emergency Services departments often maintain Contra Costa County flood maps, including flood zones, flood insurance rates, FEMA flood information, and flood hazards. The maps also show water flow and drainage patterns, and may contain emergency flood response information. Contra Costa County flood maps may be available online through Emergency Services departments.

Contra Costa Emergency Services Martinez CA 1340 Arnold Drive 94553 925-646-4690

Richmond Emergency Services Richmond CA 440 Civic Center Plaza 94804 510-307-8075


Archives in Contra Costa County California collect and store documents and other records that have historic value. Most archives also contain local Contra Costa County maps, including flood maps. These flood maps include Contra Costa 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 Contra Costa County flood plan improvements. Many archives are housed within libraries, and archives may provide online access to their flood map collections.

Martinez Divorce Records Archive Martinez CA 1111 Ward Street 94553 925-646-2967


Recorders of Deeds in Contra Costa County California 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 Contra Costa County floods. Contra Costa County Recorders of Deeds may make flood maps available on their websites.

The County Clerk Recorder’s Office Martinez CA 555 Escobar Street 94553 925-335-7900