The zoning map is a composite of zoning designations adopted as resolutions by the Marin County Board of Supervisors. Data extend over Assessor parcel boundaries in the unincorporated area of Marin County, California. The Zoning map denotes the spatial extent of land use designations defined in the Countywide Plan.

The Zoning map denotes the spatial extent of land use designations defined in the City of San Rafael Zoning Ordinance/Development Code. Data extend over Assessor parcel boundaries in City of San Rafael.

San Rafael zoning map denoting zoning designations (districts).

The zoning map is a composite of zoning designations adopted as resolutions by the Marin County Board of Supervisors. Data extend over Assessor parcel boundaries in the unincorporated area of Marin County, California. The Zoning map denotes the spatial extent of land use designations defined in the Countywide Plan.

County of Marin zoning map denoting zoning designations (districts) for unincorporated areas.

Park land areas in the County of Marin that are under the jurisdictions of: various agencies of the Federal Government, including the National Park Service; various agencies of the State of California, including State Parks; the County of Marin; Cities; Towns; School Districts and other.

Data is obtained from a specific park parcels map on MarinMap.

Assessor parcel is a fundamental cadastral unit: a piece of land which can be owned, sold, and developed. Parcels have legal descriptions that describe their boundaries and contain information concerning rights and interests. Data are a graphic representation of parcel boundaries.

The Zoning map denotes the spatial extent of land use designations defined in the Town of Corte Madera Zoning Ordinance/Development Code. Data extend over Assessor parcel boundaries in Town of Corte Madera's Sphere of Influence.

Mill Valley zoning map denoting zoning designations (districts).

The Zoning map denotes the spatial extent of land use designations defined in the City of Larkspur Zoning. Data extend over Assessor parcel boundaries in City of Larkspur.

The Zoning map denotes the spatial extent of land use designations defined in the Town of San Anselmo Zoning Ordinance/Development Code. Data extend over Assessor parcel boundaries in Town of San Anselmo.

The Zoning map denotes the spatial extent of land use designations defined in the City of Sausalito Zoning Ordinance/Development Code. Data extend over Assessor parcel boundaries in City of Sausalito.

The Situs Address Point feature class is a point representation of addresses in Marin County. For the most part, situs addresses are placed on building footprints. The situs address may be different from the mailing address in cases of rental property or where mail is delivered to a post office box. Situs addresses have also been given to some parcels that do not yet have structures built. They have been assigned to some pump stations and water tanks that required addresses for location.

This map is designated as Final.Land-Use Data Quality ControlEvery published digital survey is designated as either ‘Final’, or ‘Provisional’, depending upon its status in a peer review process.Final surveys are peer reviewed with extensive quality control methods to confirm that field attributes reflect the most detailed and specific land-use classification available, following the standard DWR Land Use Legendspecific to the survey year. Data sets are considered ‘final’ following the reconciliation of peer review comments and confirmation by the originating Regional Office. During final review, individual polygons are evaluated using a combination of aerial photointerpretation, satellite image multi-spectral data and time series analysis, comparison with other sources of land use data, and general knowledge of land use patterns at the local level.Provisional data sets have been reviewed for conformance with DWR’s published data record format, and for general agreement with other sources of land use trends. Comments based on peer review findings may not be reconciled, and no significant edits or changes are made to the original survey data.The 2011 Marin County land use survey data was developed by the State of California, Department of Water Resources (DWR) through its Division of Integrated Regional Water Management (DIRWM) and Division of Statewide Integrated Water Management (DSIWM). Land use boundaries were digitized and land use data was gathered by staff of DWR’s North Central Region using extensive field visits and aerial photography. Land use polygons in agricultural areas were mapped in greater detail than areas of urban or native vegetation. Quality control procedures were performed jointly by staff at DWR’s DSIWM headquarters, under the leadership of Jean Woods, and North Central Region, under the supervision of Kim Rosmaier. This data was developed to aid DWR’s ongoing efforts to monitor land use for the main purpose of determining current and projected water uses. The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standards version 2.1, dated March 9, 2016. DWR makes no warranties or guarantees - either expressed or implied - as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov. This data represents a land use survey of Marin County conducted by the California Department of Water Resources, North Central Regional Office staff. The field work for this survey was conducted during June 2011 by staff visiting each field and noting what was grown. Land use field boundaries were digitized using ArcGIS 9.3 then ArcGIS 10.0 using 2010 National Agriculture Imagery Program (NAIP) one-meter imagery as the base. To facilitate digitizing, Marin was divided in 2 portions, the Point Reyes area and all other areas of Marin County. These two areas were recombined after each portion was finished. The outer boundary of this land use survey coincides with the county line revisions completed by the California Department of Forestry and Fire Protection in 2009. Field boundaries were not drawn to represent legal parcel (ownership) boundaries, or meant to be used as parcel boundaries. Images and land use boundaries were loaded onto laptop computers that were used as the field data collection tools. Staff took these laptops into the field and virtually all the areas were visited to positively identify the land uses. Land use codes were digitized in the field using ESRI ArcMAP software, version 10.0. Global positioning system (GPS) units connected to the laptops were used to confirm the field team's location with respect to the fields. Staff took these laptops into the field and virtually all the areas were visited to positively identify the land uses. Land use codes were digitized in the field on laptop computers using ESRI ArcMAP software, version 10.0. The field team used a customized menu program to facilitate the gathering of field data. Before final processing, standard quality control procedures were performed jointly by staff at DWR’s North Central Region, and at DSIWM headquarters under the leadership of Jean Woods. Senior Land and Water Use Supervisor. After quality control procedures were completed, the data was finalized. The positional accuracy of the digital line work, which is based upon the orthorectified NAIP imagery, is approximately 6 meters. The land use attribute accuracy for agricultural fields is high, because almost every delineated field was visited by a surveyor. The accuracy is 95 percent because some errors may have occurred. Possible sources of attribute errors are: a) Human error in the identification of crop types, b) Data entry errors.

The Zoning map denotes the spatial extent of land use designations defined in the Town of Tiburon Zoning Ordinance/Development Code. Data extend over Assessor parcel boundaries in Town of Tiburon.

The Zoning map denotes the spatial extent of land use designations defined in the Town of Ross Zoning Ordinance/Development Code. Data extend over Assessor parcel boundaries in Town of Ross.

A parcel is a fundamental cadastral unit: a piece of land which can be owned, sold, and developed. Parcels have legal descriptions that describe their boundaries and contain information concerning rights and interests. Data are a graphic representation of parcel boundaries in Marin County, California.The FSZ is idenified by Assessor "Use Code" 34 (Unimproved Farmland) or 35 (Improved Farmland). Since theses have been Dissolved by zone the use code is not viewable.

Ridge and Upland Greenbelt is designated in the Marin Countywide Plan as "visually prominate ridgelines". They are also known as "community separators". The map denotes the spatial extent defined in the Countywide Plan.The Ridge and Upland Greenbelt (RUG) does not follow a specific contour interval. Rather, a contour line was determined for each area on a case-by-case basis when originally mapped. The RUG is based on large maps prepared by Marin County Parks (not sure if these historic maps have been archived) and were digitized at the time using rudimentary software for the 1994 CWP. Staff revised the RUG in the 2007 CWP to refine the line work to make it more accurate using property boundaries, maps, and aerial photography. The RUG was updated to follow contour lines and parcel boundaries, where feasible. In most areas the RUG boundary was expanded to include publicly owned hillside parcels, such as Marin County Open Space District and city-owned parcels. Privately owned lands were considered for inclusion in the RUG boundary if the parcels were clustered together and undeveloped. For parcels in unincorporated areas, those with Planned District zoning were also considered. Information on lot size, zoning, and development potential was queried from the land use database. In generally, already developed parcels were not considered for addition into the RUG boundary.

The Zoning map denotes the spatial extent of land use designations defined in the City of Belvedere Zoning Ordinance/Development Code. Data extend over Assessor parcel boundaries in City of Belvedere.

This shapefile contains tax rate area (TRA) boundaries in Marin County for the specified assessment roll year. Boundary alignment is based on the 2014 county parcel map. A tax rate area (TRA) is a geographic area within the jurisdiction of a unique combination of cities, schools, and revenue districts that utilize the regular city or county assessment roll, per Government Code 54900. Each TRA is assigned a six-digit numeric identifier, referred to as a TRA number. TRA = tax rate area number