Sonoma County Home | Site Index | Contact Us | Search


GIS Home


ActiveMap is an Interactive Mapping Application that enables the public to view General Plan Land Use, Zoning and many other land development related data sets for property within unincorporated Sonoma County over the Internet. Within the mapping application, there are three maps to choose between: Base, Zoning and General Plan. Each map provides different types of geographic data used in land use planning and land development. Users will be able to research many PRMD data sets for properties within unincorporated Sonoma County in a flexible, easy-to-use map-like product.


Browser Alert

Internet Explorer (IE) browser supports ActiveMap’s functionality

IEs View - Zoom and View Compatibility settings are essential to utilize and view ActiveMap content.


To set View - Zoom:

  • On toolbar, select View and then, select Zoom to ensure 100% is set.

To set View Compatibility:

Launch Application Quick Start Tutorial | Help | FAQ | Layer Data Details (metadata)

Interactive Maps

  • Use of the Interactive Mapping Application is subject to the Terms & Conditions of Use.
  • Upon selecting & opening an Interactive Map below, user may toggle between maps.
  • Newly added layers ★

Base Map

Base Map
This map provides a geographic and visual context to general information for the unincorporated areas of Sonoma County. The layers of information displayed represent PRMD’s base map data. The map’s layers of information include:
Air Quality Control Board
City Limits
City Sphere of Influence
City Urban Growth
Flood Prone Urban Area
Geographic Places
Groundwater Availability Areas
Lake Sonoma
Photos - Color Aerial
Planning Areas
Restricted Structures (Bridges)
Supervisor Districts
Urban Service Areas
USGS Streams
USGS Topographic Quads (DRG)
Waiver Prohibition Areas
Water Quality Control Board
Wet Weather Zones
Williamson Act Land Contracts


This map combines PRMD base map data with map layers that provide specific zoning information related to planning and development within the unincorporated areas of Sonoma County. The map’s layers of information include:
AH Affordable Housing
Area and Specific Plans
BH Biotic Habitat ★
City Limits
F1 Floodway
F2 Floodplain
G Geologic Hazard
Geographic Places
HD Historic District
Land Use Policy (General Plan)
Lake Sonoma
LG Local Guidelines ★
Local Area Development Guidelines
MR Mineral Resource
Photos - Color Aerial
RC Riparian Corridor ★
Redevelopment Plan
SR Scenic Resource
Urban Service Areas
USGS Topographic Quads (DRG)
VOH Valley Oak Habitat
Zoning by Area

General Plan
Land Use

General Plan Land Use
This map combines PRMD base map data with map layers that provide specific General Plan Land Use (GP LU) and Open Space (GP OS) information related to planning and development within the unincorporated areas of Sonoma County. The map’s layers of information include:
Affordable Housing
City Limits
Geographic Places
GP LU by Area
GP Planning Area Policies
GP OS Community Separators
GP OS Existing Parks
GP OS Future Parks
GP OS Habitat Connectivity Corridors
GP OS Marshes and Wetlands
GP OS Riparian Corridors (USGS Streams)
GP OS Scenic Corridors
GP OS Scenic Landscape Units
Lake Sonoma
Photos - Color Aerial
Planning Areas
Urban Service Areas
USGS Topographic Quads (DRG)

System Recommendations

  • Screen Resolution
    To view the graphic details of the maps, it is recommended to use a monitor with a screen resolution of 1024 x 768 or higher.
  • Pop-ups
    This site creates pop-up windows. Please enable pop-ups by turning off Pop-up Blocker.
  • Adobe Acrobat PDF Files
    Many of the documents on the websites are in Adobe Acrobat Portable Document Format (PDF). PDF format is used to preserve the content and layout of our hard copy publications. Publications in PDF can only be viewed and printed using the Adobe Acrobat Reader version 4.0 or higher. The Adobe Acrobat Reader can be downloaded for FREE at the Adobe Systems, Inc. Site, where help using the Reader is also provided.

Accessibility Statement

  • The Sonoma County PRMD is committed to ensuring the interactive mapping applications are accessible to all users. The website undergoes review and redesign as necessary to ensure that they meet and/or exceed the requirements of Section 508 of the Rehabilitation Act of 1973.
  • Should gaining access to information on these websites be hindered, please submit a PRMD GIS Inquiry and assistance shall be provided to meet your needs.

Contact Us

  • The PRMD geographic information systems (GIS) staff serves the needs of County staff, Local, State and Federal government and the citizens and businesses of the County of Sonoma. Utilizing GIS technology, information regarding geographical elements (e.g. land, river, streets) and their relationships to one another can be visually displayed (for review) and analyzed.
  • The GIS section is the nucleus of PRMD’s network, managing and administrating land use datasets, software and technology. The ultimate goal of PRMD’s GIS staff is to implement innovative ideas to develop, maintain and provide accurate geographical information in an effort to facilitate land development planning and determinations, while fostering efficient business practices and better decision making.
  • Additionally, our GIS products and services aid PRMD’s staff decision and policymaking processes, and seek to improve the livelihood of the citizens of Sonoma County.
  • Should you have questions, inquiries and/or comments, please submit a PRMD GIS Inquiry.
Better Decision-making through GeoSpatial Information
  PRMD Home | About PRMD | Boards & Commissions | Forms & Applications | Online Permits | Fees | Permit History | Permit Reports | Zoning | Policies & Procedures | Historic Resources | Storm Water | FAQ's | Links | Calendar
Although every effort is made to provide complete and accurate information on this website, users are advised to contact appropriate PRMD staff before making project decisions. This may involve contacting more than one section within PRMD (e.g. Building, Plan Check, Zoning, Well & Septic, etc.), since each section implements specific codes or ordinances which may affect your project.
Sonoma County Home | Site Index | Contact Us | Search | Accessibility | This page was last updated by webmaster
Permit and Resource Management Department County of Sonoma