10,000+ results returned
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Title: SCGISDB2_BASE_HYD_USGSSTRM
Contributors:- Line data
- 2003
Summary: Compiled by Sonoma County GIS group. Polyline layer only. The base line work is compiled from the CDF FRAP (California Department of Forestry Fire and Resource Assessment Program) Russian River and Gualala River Watersheds (River Basins) data sets which include; 1:24000 Forest Service Cartographic Feature Files and 1:24000 USGS (United States Geological Survey) DLG-3 files, Sonoma Creek Watershed data provided by Sonoma Ecology Center, watersheds that include part of Sonoma County not included in the above data are derived from USGS DLG-3 files. The original USGS DLG-3 files used in this data set were edited and new line work added. The original USGS DLG-3 files used for this data set were edge matched and edited for connectivity. The stream line work has also been centerlined through water bodies using artificial connectors. The data was then compared to USGS 7.5 minute quads and edited to reflect the USGS classification of perennial and intermittent streams. Only streams included on the USGS 7.5 minute quads where retained in this layer. USGS stream symbol number 405 was used to determine intermittent streams. 7.5 minute quads with this symbol number on it show perennial streams as a solid blue line. Some USGS 7.5 minute quads show blue line streams on them with a solid blue line, in these cases the blue line with a thickness of .008" was classified as a perennial stream while the lines with a thickness of .004" were classified as a intermittent stream. Most fields from the data sets used to compile this layer where removed, and network not retained.
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Title: PAR_PARCELS
Contributors:- Polygon data
- 2011
Summary: A distinction should be made with respect to this layer which includes GIS parcels and the official Assessor Parcels residing in the Assessor Map books at the Sonoma County Assessor Office. For official parcel records please contact the Sonoma County Assessor (707)565-1888. These parcels should NOT be represented as survey data, and the official record of survey takes precedence where there are discrepancies. It is the end user's responsibility to check the accuracy of the GIS data by comparing it with the published data from the Sonoma County Assessor / Recorder office. The Sonoma County parcel base was originally compiled from Assessor Parcel maps at a scale of 1:6000. The individual Assessor Parcel maps were enlarged or reduced in size using an electrostatic process to produce the maps at the 1:6000 scale, the maps were then fit together by hand and transcribed on to mylar. The mylar base consisted of 1:6000 USGS base map information typically found on the 7.5 USGS quad series. This base information consisted of Topography, Roads, Section, and Rancho lines to name some. Using this information, the Assessor Parcel maps were fit to the individual 1:6000 scale maps. Each 1:6000 scale map represents 1/6 (quad sixths) of a 7.5 minute USGS Quadrangle series map. In 1998 the State Board of Equalization provided the impetus to produce the Russian River Project for all of Planning Area 4. One aspect required for this project was a digital parcel base for Planning Area 4. This involved the conversion of the 1:6000 mylars with the transcribed parcels on them into a digital version of the parcels. The mylars where scanned and geo-referenced using the base map information originally included with the 1:6000 mylar base. The maps were geo-referenced to a digital version of the USGS 7.5 minute Quadrangle series available from the Teale Data Center. The original projection was California State Plane Zone 2 NAD 1927. County Staff then used AutoCAD software to heads up digitize each 1:6000 scale map in Planning Area 4. A custom application was created and used by GIS staff involving the use of Avenue and ArcView 3.2 to create a point for all the parcels in Planning Area 4, attributes included Assessor Parcel Number. The DWGs were then converted to shapefiles and then converted to ArcINFO coverages, the parcel tags were converted from shapefiles to ArcINFO coverages and the point coverage was merged with the polygon coverage with the IDENTITY command. An exhaustive process was involved to eliminate errors once the DWGs were converted to ArcINFO coverages so polygons could be generated. The coverages were then aggregated using the MAPJOIN command, the original boundary of the 1:6000 scale maps was removed using the REGIONDISSOLVE command to merge adjacent polygons with the same AP number. In 1999 the remainder of the planning areas were converted to digital form following the Russian River Project and the seamless base was completed in 2001. The seamless parcel base was maintained in ArcINFO until the release of ArcGIS 8.3, which included topology tools necessary for its maintenance. The seamless base prior to late 2002 was suitable for 1:100000 scale while the control points (the corners for the 1:6000 scale maps) were suitable for 1:24000 scale. Prior to rectification to the Merrick 2000 orthophotography, the parcel data were derived from 1:6000 scale maps (enlarged from USGS 7.5 minute quadrangle 1:24,000 series) and digitized in California State Plane, Zone II, NAD 27 coordinates (survey feet), but were converted to California State Plane, Zone II, NAD 83 coordinates (survey feet) as part of a rectification process now underway. The parcels used to use the USGS 7.5 minute quadrangle (1:24,000) series for coordinate control, but no guarantee is made for their spatial accuracy. The data were re-projected to NAD 83 coordinates to overlay the orthophotography, but the parcel boundaries will not correspond precisely with features in the images. The parcels were rectified to orthophotography flown in April - May 2000 using geo-referencing tools available in ArcGIS 8.3. This project was completed in July 2005. In general, the parcels meet National Accuracy Standards for 1:24,000 scale maps, and likely exceed that accuracy in urban areas. A complete description of the process is detailed in a series of documents located on a local file server: S:\COMMON\GIS\Documentation\Parcel Rectification Update Process\Procedure - *. doc. A brief summary is as follows. Individual Assessor Parcel pages or CAD drawings are rectified to the orthophoto. COGO survey data are used when available and in sufficient quantities to enable the bulk of an Assessor Parcel page to be digitized using said information. Polygons are generated directly from the COGO data, CAD dwg are exported to feature classes, where polygons are then generated, rectified Assessor Parcel pages are vectorized using ArcScan and subsequently polygons are generated. A spatial join is used to assign attributes to the newly generated polygons. Polygons are then assigned an accuracy rank based on source, quality of the fit to the orthophoto, and RMS error encountered during rectification (only the scanned Assessor maps will have and RMS error associated with them). See the fields RANK and DESCRIPTION for information on fit assessment. Areas that have been successfully updated as such have a reasonable expectation of accuracy of +/- 10 and possibly better, areas that have not been updated or are flagged in SCAMP (http://sc-gis/web/scamp/browse.jsp) under the GIS group Projects as Needs Survey Data, the original accuracy assessment of 1:100000 applies.
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Title: SCGISDB2_BASE_ADM_SCHOOLDISTRICTS
Contributors:- Polygon data
- 2003
Summary: This dataset contains the Sonoma County school district boundaries. There are 40 districts in Sonoma County that range in enrollment from 12 students to over 12,000 students. These district boundaries indicate the jurisdiction each district covers within the county.
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Title: SCGISDB2_BASE_ADM_SUPERVISOR
Contributors:- Polygon data
- 2003
Summary: The boundaries of each supervisorial district in Sonoma County based on 2000 census. Redrawn in 2001 using Autobound.
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Title: TRA_STREETS
Contributors:- Line data
- 2011
Summary: Road centerlines are captured from the aerial photography as the apparent centerline. Attributes originally compiled via a conflation process from the original street centerline data to the new centerline coverage captured from the aerial photography. Subsequently an extensive QC process followed to correct errors in the conflation process. These areas where identified by staff in phase one of the QC process.
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Title: REF_ORTHINDX
Contributors:- Polygon data
- 2001
Summary: This layer represents the orthophotography delivered by Merrick to the County of Sonoma. The layer is divided up into 1596 different tiles which represent the individual photos of the orthophotography. Smaller tiles represent high resolution orthophotography with 1/4 foot pixels with medium and large tiles representing decreasing resolution of 1/2 foot pixels, 1 foot pixels, and 2 foot pixels respectively. The County GIS database encompasses the entire geographic extent of the project limits as defined in the scope of work documentation. In order to rapidly reference and manage coverages, ARC/INFO graphic databases must be logically divided based on geographic area. This module/area is termed a "TILE" by ARC/INFO. In this project, the tile sizes are: 2000' ("y" axis) by 3000' ("x" axis) - Cotati, Rohnert Park and Petaluma, 4000' ("y" axis) by 6000' ("x" axis) - Areas of Significant Interest (Including Santa Rosa), 8000' ("y" axis) by 12000' ("x" axis) - Areas of Lesser Interest
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Title: SCGISDB2_BASE_ADM_PUBLICLANDS
Contributors:- Polygon data
- 1999
Summary: These Public Lands should NOT be represented as survey data, and the official record of survey takes precedence where there are discrepancies. It is the end user's responsibility to check the accuracy of the GIS data by comparing it with the published data from the Sonoma County Assessor / Recorder office. NO DETERMINATION REGARDING PUBLIC ACCESS IS EXPRESSED OR IMPLIED BY THIS LAYER This layer was compiled from two primary sources; the County seamless parcel base and the orthophotography. In some cases the public land areas were heads up rectified to the orthophotography and in others the public lands were extracted form a megabyte parcel join. The Original layer was created to support the 1989 version of the Open Space Element of the General Plan, and some of the lands depicted in this area are from the original pre-rectified state of the parcel base prior to rectification to the orthophotography. However, this layer has been updated to include city parks and some other modifications to the public lands. Many however will need to be updated as the parcels are rectified. The Sonoma County parcel base was originally compiled from Assessor Parcel maps at a scale of 1:6000. The individual Assessor Parcel maps were enlarged or reduced in size using an electrostatic process to produce the maps at the 1:6000 scale, the maps were then fit together by hand and transcribed on to mylar. The mylar base consisted of 1:6000 USGS base map information typically found on the 7.5 USGS quad series. This base information consisted of Topography, Roads, Section, and Rancho lines to name some. Using this information, the Assessor Parcel maps were fit to the individual 1:6000 scale maps. Each 1:6000 scale map represents 1/6 (quad sixths) of a 7.5 minute USGS Quadrangle series map. In 1998 the State Board of Equalization provided the impetus to produce the Russian River Project for all of Planning Area 4. One aspect required for this project was a digital parcel base for planning area 4. This involved the conversion of the 1:6000 mylars with the transcribed parcels on them into a digital version of the parcels. The mylars were scanned and geo-referenced using the base map information originally included with the 1:6000 mylar base. The maps were geo-referenced to a digital version of the USGS 7.5 minute Quadrangle series available from the Teal Data Center. The original projection was California State Plan Zone 2 NAD 1927. County Staff then used AutoCAD software to heads up digitize each 1:6000 scale map in planning area 4. A custom application was created and used by GIS staff involving the use of avenue and ArcView 3.2 to create a point for all the parcels in planning area 4, attributes included Assessor Parcel Number. The DWGs were then converted to shapefiles and then converted to ArcINFO coverages, the parcel tags were converted from shapefiles to ArcINFO coverages and the point coverage was merged with the polygon coverage with the IDENTITY command. An exhaustive process was involved to eliminate errors once the DWGs were converted to ArcINFO coverages so polygons could be generated. The coverages were then aggregated using the MAPJOIN command, the original boundary of the 1:6000 scale maps was removed using the REGIONDISSOLVE command to merge adjacent polygons with the same AP number. In 1999 the remainder of the planning areas were converted to digital form following the Russian River Project and the seamless base was completed in 2001. The seamless parcel base was maintained in ArcINFO until the release of ArcGIS 8.3, which included topology tools necessary for its maintenance. The seamless base prior to late 2002 was suitable for 1:100000 scale while the control points (the corners for the 1:6000 scale maps) were suitable for 1:24000 scale. Pending continued funding, the County is correcting the parcels to the orthophotography generated in April - May 2000. The parcel data were derived from 1:6000 scale maps and digitized in California State Plane, Zone II, NAD 27 coordinates (survey feet), but were converted to California State Plane, Zone II, NAD 83 coordinates (survey feet) as part of a rectification process now underway. The parcels currently use the USGS 7.5 minute quadrangle (1:24,000) series for coordinate control, but no guarantee is made for their spatial accuracy. The data were re-projected to NAD 83 coordinates to overlay the orthophotography, but the parcel boundaries will not correspond precisely with features in the images. The parcels are currently being rectified to orthophoto, a complete description of the process is detailed in a series of documents located on a local file server: S:\COMMON\GIS\Documentation\Parcel Rectification Update Process\Procedure - *. doc. A brief summary is as follows. Individual Assessor Parcel pages or CAD drawings are rectified to the orthophoto. COGO survey data are used when available and in sufficient quantities to enable the bulk of an Assessor Parcel page to be digitized using said information. Polygons are generated directly from the COGO data, CAD dwg are exported to feature classes, where polygons are then generated, rectified Assessor Parcel pages are vectorized using ArcScan and subsequently polygons are generated. A spatial join is used to attributes to the newly generated polygons. Polygons are then assigned an accuracy rank based on source, quality of the fit to the orthophoto, and RMS error encountered during rectification (only the Scanned Assessor map will have and RMS error associated with them) See the fields RANK and DESCRIPTION for information on fit assessment. Areas that have been successfully updated as such have a reasonable expectation of accuracy of +/- 10 and possibly better, areas that have not been updated or are flagged in SCAMP (http://sc-gis/web/scamp/browse.jsp) under the GIS group Projects as Needs Survey Data, the original accuracy assessment of 1:100000 applies.
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Title: Community Separators, Sonoma County, California, 2015
Contributors:- Polygon data
- 2015
Summary: The community separators dataset represents the Open Space and Resource Conservation Scenic Resources Element 2.1 of the Sonoma County General Plan 2020 as adopted on September 23, 2008 by Resolution No. 08-0808. This dataset includes revisions to the Community Separator adopted by Resolution #11-0463 on August 23, 2011. The community separators element assists in identifying eight areas that preserve the visual identities of communities by maintaining open space areas between cities and communities. These areas need to remain open or retain a rural character in order to avoid corridor-style urbanization. Therefore, the community separators function as rural open space to separate cities and other communities, contain urban development, and to provide city and community identity by providing visual relief from continuous urbanization. Although community separators are rural areas that have open space characteristics, many of these areas are also scenic. The lands within community separators are frequently subject to pressure for development because they are close to developed areas and major roads. The community separators represent one of three scenic resources component categories of the Sonoma County General Plan 2020 Open Space and Resource Conservation Element. The other scenic resource categories are Scenic Corridors and Scenic Landscape Units. The Figure OSRC-1 (http://www.sonoma-county.org/prmd/gp2020/adopted/fig-osrc1.pdf) shows these designated scenic resource areas. The following eight areas have been designated as Community Separators: Petaluma/Novato Petaluma/Rohnert Park Rohnert Park/Santa Rosa Santa Rosa/Sebastopol Windsor/Larkfield/Santa Rosa Windsor/Healdsburg Northeast Santa Rosa Glen Ellen/Agua Caliente The intent of the plan is that policies, guidelines, and standards be clear and direct so that property owners and citizens may easily understand its provisions and how they apply to parcels of land as well as their cumulative impact on future environmental conditions and quality of life. The broad purpose of the Sonoma County General Plan is to express policies which will guide decisions on future growth, development, and conservation of resources through 2020 in a manner consistent with the goals and quality of life desired by the county's residents. Under State law many actions on private land development, such as specific plans, area plans, zoning, subdivisions, public agency projects and other decisions must be consistent with the general plan. The goals, objectives, and policies set forth in the plan will be applied in a manner to insure their constitutionality. Per Title 7, Division 1 of the Government Code of the State of California. Article 5, Section 65300 et seq, the County of Sonoma is required to adopt a comprehensive general plan to guide its future physical development. Therefore, as required by law, the 2020 Sonoma County General Plan was officially adopted on September 23, 2008. Related Resources: Sonoma County General Plan 2020 Index [includes amendments since adoption] http://www.sonoma-county.org/prmd/gp2020/index.htm Sonoma County General Plan 2020 Open Space and Resource Conservation Scenic Resources Element http://www.sonoma-county.org/prmd/gp2020/adopted/osrce.pdf
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Title: Area Specific Plans, Sonoma County, California, 2012
Contributors:- Polygon data
- 2012
Summary: The specific and area plan dataset represents local communities subject to the Sonoma County General Plan 2020 Land Use Element Policy LU-1a as adopted on September 23, 2008 by Resolution No. 08-0808. There are 16 local communities which are subject to the specific and area plan development policies. Each community is unique and therefore, has particular policies and goals which assist in governing development potential. An Area or Specific Plan may establish more detailed policies affecting proposed development, but may not include policies that are in conflict with the Sonoma County General Plan 2020. Where there appears to be a conflict between the General Plan and any Area or Specific Plan, the MORE RESTRICTIVE policy or standard shall apply. The specific and area plan policies and goals are as follows: Airport Industrial Specific Plan: The boundary polygon represents the Sonoma County Airport Industrial Area Specific Plan adopted by Resolution #84-2213 on October 30, 1984. The boundary polygon identifies the specific plan and a master environmental area to assess the future use of 770 acres involving the Airport Boulevard planning area in the vicinity of the Sonoma County Airport. - - - - Bennett Valley Area Plan: The boundary polygon represents the Bennett Valley Area Plan adopted by Resolution #63206A on February 27, 1979 and modified by Resolution #93-0337 on March 9, 1993. The goals of the Bennett Valley Area Plan was to retain and enhance the rural character, protection of agriculture as well as to reflect the environmental and economic constraints, suitability and sensitivity of the study area in determining the location and intensity of development. The boundary of the Bennett Valley Area Plan was revised/expanded to correspond with the Design Review Area by Resolution #11-0461 adopted on August 23, 2011. - - - - Franz Valley Area Plan: The boundary polygon represents the Franz Valley Area Plan adopted by Resolution #63602 on April 17, 1979 and modified by Resolution #93-0337 on March 9, 1993. The purpose, goals and policies of the Franz Valley Area Plan was the creation of a citizens committee to focus on discussions of issues and goals. The committee policies were used in the formulation of the land use and open space plans, which are the primary means of implementing the Franz Valley Area Plan. The 1993 revisions of the Franz Valley Area Plan did not include an exhaustive evaluation or reconsideration of the policies or designations contained in the plan. The scope of the revisions was limited to that necessary to achieve General Plan consistency. - - - - Hessel Area Plan: The boundary polygon represents the Hessel Area Plan adopted by Resolution #64310 on July 31, 1979. The goals and policies of the Hessel Area Plan was to accommodate a variety of rural lifestyles and to protect and maintain agriculture in the area. - - - - Lower River Area Plan: The boundary polygon represents the Lower River Area Plan adopted by Resolution #74191 on May 3, 1983, Resolution # 9760 on September 1, 1983, Resolution # 9789 on October 20,1983, and Resolution #75478B and #75479 on October 31, 1983. The goals and policies of the Lower River Area Plan was intended to resolve differences between the adopted 1974 zoning and the goals, policies, and projections for the same area specified in the 1978 County General Plan. The Lower River Area Plan is organized to serve as an Environmental Impact Report. - - - - North Santa Rosa Specific Plan: The boundary polygon represents the North Santa Rosa Specific Plan adopted by Resolution #73512 in January 1983. The goals and policies of the North Santa Rosa Specific Plan was intended to resolve differences between the adopted 1974 zoning and the goals, policies, and projections for the same area specified in the 1978 County General Plan. The North Santa Rosa Specific Plan is organized to serve as an Environmental Impact Report. - - - - North Sonoma Valley Area Plan: The boundary polygon represents the North Sonoma Valley Area Plan adopted by Resolution #68557 on January 5, 1981. The goals and policies of the North Sonoma Valley Area Plan was intended to resolve differences between the adopted 1974 zoning and the goals, policies, and projections for the same area specified in the 1978 County General Plan. The North Sonoma Valley Area Plan draws extensively from the North Sonoma Valley Zoning Plan adopted in 1974. The present plan incorporates the major goals and objectives of the earlier plan, and therefore, will continue to minimize residential growth and maximize preservation of open space, recreation and agriculture in the Valley. The North Sonoma Valley Area Plan is organized to serve as an Environmental Impact Report. - - - - Penngrove Area Plan: The boundary polygon represents the Penngrove Area Plan adopted by Resolution #84-675 on April 10, 1984 and modified by Resolution #93-0337 on March 9, 1993. The Penngrove Area Plan was created to re-evaluate residential densities within the Penngrove sewer service area. The plan boundary was extended beyond the immediate community to include the surrounding area where no previous specific plan had been undertaken. The Penngrove Area Plan is organized to serve as an Environmental Impact Report. - - - - Petaluma Dairy Belt Area Plan: The boundary polygon represents the Petaluma Diary Belt Area Plan adopted by Resolution #85-2789 on December 17, 1985 and modified by Resolution #93-0337 on March 9, 1993. The goals and policies of the Petaluma Diary Belt Area Plan was intended to resolve differences between the adopted 1974 zoning and the goals, policies, and projections for the same area specified in the 1978 County General Plan. The Petaluma Dairy Belt Area Plan is organized to serve as an Environmental Impact Report. - - - - Sonoma Mountain Area Plan: The boundary polygon represents the Sonoma Mountain Area Plan adopted by Resolution #61105 on June 20, 1978 and modified by Resolution #93-0337 on March 9, 1993. The Sonoma Mountain Area Plan was created out of response to concerned citizens over major land divisions proposed within the area. The plan methodology focuses on analysis of existing land use patterns and commitments, and the analysis of the environmental opportunities and constraints within the area. The Sonoma Mountain Area Plan is organized to serve as an Environmental Impact Report. The boundary of the Sonoma Mountain Area Plan was revised to remove the area that overlapped the Bennett Valley Area Plan by Resolution #11-0461 adopted on August 23, 2011. - - - - South Santa Rosa Area Plan: The boundary polygon represents the South Santa Rosa Area Plan adopted by Resolution #71691 on May 4, 1982 and modified by Resolution #93-0337 on March 9, 1993. The goals and policies of the South Santa Rosa Area Plan was intended to resolve differences between the adopted 1974 zoning and the goals, policies, and projections for the same area specified in the 1978 County General Plan. The South Santa Rosa Area Plan is organized to serve as an Environmental Impact Report. The boundary of the South Santa Rosa Area Plan was revised to remove the area that overlapped the Bennett Valley Area Plan by Resolution #11-0461 adopted on August 23, 2011. - - - - South Sonoma Valley Area I & II Area Plans: The boundary polygon represents the South Sonoma Valley Area I Area Plan adopted by Resolution #51799-51801 on December 9, 1975. The boundary polygon represents the South Sonoma Valley Area II Area Plan adopted by Resolution #51553 on November 18, 1975 and revised in February 1978 in compliance with Resolution #51553. Due to the large scale of the study area, the South Valley was divided into four separate study areas. The South Sonoma Valley Area I Area Plan encompasses El Verano, Boyes Springs, Fetters Springs and Agua Caliente. Whereas, the South Sonoma Valley Area II Area Plan encompasses areas northeast, east and south of the City of Sonoma. The plans consider the social, economic and environmental characteristics of the area and blends such complex variables as community sentiment, physical capabilities of the land (particularly those characteristics directly related to wells and septic systems), and urban/rural economics into a comprehensive plan capable of serving both present and future needs. The plan goals and policies centers on enhancing the rural lifestyle that now exists in the Valley, conserve productive agricultural land for agricultural use, preserve hillsides in their present natural or agricultural state and retain open space by developing a taxing policy which favors agriculture and other open lands. The adopted land use and zoning within the Area Plan is consistent with the County General Plan, and echoes the intent and concepts embodied in the City of Sonoma's General Plan. - - - - West Petaluma Area Plan: The boundary polygon represents the West Petaluma Area Plan adopted by Resolution #70087 on August 11, 1981 and modified by Resolution #93-0337 on March 9, 1993. The goals and policies of the West Petaluma Area Plan was intended to resolve differences between the adopted 1974 zoning and the goals, policies, and projections for the same area specified in the 1978 County General Plan. The West Petaluma Area Plan is organized to serve as an Environmental Impact Report. - - - - West Santa Rosa Area Plan: The boundary polygon represents the West Santa Rosa Area Plan adopted by Resolution #72471 on August 10, 1982. The goals and policies of the West Santa Rosa Area Plan was intended to resolve differences between the adopted 1974 zoning and the goals, policies, and projections for the same area specified in the 1978 County General Plan. The West Santa Rosa Area Plan is organized to serve as an Environmental Impact Report. - - - - West Sebastopol Specific Plan: The boundary polygon represents the West Sebastopol Specific Plan adopted by Resolution #65071 on December 11, 1979. The goals and policies of the West Sebastopol Specific Plan was oriented toward services and community activities in and around Sebastopol. Related Resources: Sonoma County General Plan 2020 Adopted Index http://www.sonoma-county.org/prmd/gp2020/adopted/index.htm Sonoma County General Plan 2020 Amended Index http://www.sonoma-county.org/prmd/gp2020/amended/index.htm Sonoma County General Plan 2020 Land Use Element http://www.sonoma-county.org/prmd/gp2020/adopted/lue.pdf (page LU-12 and LU-13)
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Title: Air Quality Control Board, Sonoma County, California, 2011
Contributors:- Polygon data
- 2011
Summary: The air quality control board dataset represents the Northern Sonoma County Air Pollution Control District (a.k.a. NSCAPCD) and the Bay Area Air Quality Management District (a.k.a. BAAQMD). The Northern Sonoma County Air Pollution Control District set forth Rule 110 which states: rules and regulations are set forth to achieve and maintain such levels of air quality as will protect human health and safety; prevent injury to plant and animal life; avoid damage to property; and preserve the comfort, convenience and enjoyment of the natural attractions of the California North Coast Air Basin. The Bay Area Air Quality Management District is committed to achieving clean air to protect the public's health and the environment in the San Francisco Bay region. The Air District aims to: 1) attain and maintain air quality standards, 2) increase public awareness of positive air quality choices, and 3) develop and implement protocol and policies for environmental justice. It is the intent of all air pollution control districts and air quality management districts in the California North Coast Air Basin to adopt and enforce rules and regulations which assure that reasonable provision is made to achieve and maintain state and federal ambient air quality standards for the area under their jurisdiction and to enforce all applicable provisions of State law.
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Title: Sphere of Influence (SOI), Sonoma County, California, 2011
Contributors:- Polygon data
- 2011
Summary: The sphere of influence dataset represents the nine cities, urban (incorporated) municipality sphere of influence (e.g. SOI) boundaries within the County of Sonoma as determined by the Local Agency Formation Commission (LAFCO). See Data Quality - Attribute Accuracy tab for boundary modification history. A "sphere of influence" is a physical boundary a local governmental agency is expected to provide services for and is generally set by Sonoma LAFCO with a 20-year time frame. Sphere of influence boundaries are designated in order to help discourage urban sprawl, limit boundary disputes between local agencies, and provides indications regarding future development potential. A district or City's SOI should not to be construed as "referral" areas or as bestowing authority and control in the sphere area. LAFCO can amend a SOI if there are sound reasons to do so.
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Title: Habitat Connectivity, Sonoma County, California, 2010
Contributors:- Polygon data
- 2010
Summary: The habitat connectivity corridors dataset represents the Open Space and Resource Conservation Biotic Resources Habitat Areas Element 3.1 of the Sonoma County General Plan 2020 as adopted on September 23, 2008 by Resolution No. 08-0808. The habitat connectivity corridors is one of four types of biotic habitats which assist in identifying and preserving natural and diverse biotic resource habitat areas from adverse effects of human activities. The maintaining and improving opportunities for habitat connectivity throughout the County is essential for protecting biodiversity and sustaining native plant and animal populations. Linkages and corridors are needed to allow movement across the landscape and to connect wetlands and other important habitat areas to undeveloped lands and permanent open space. Important linkages and corridors include lands south of Glen Ellen connecting Sonoma Mountain and the Mayacamas Range and lands connecting the Laguna de Santa Rosa to agricultural areas south of Highway 116. The Biotic Habitat Areas designated on Figures OSRC-5a through 5i (http://www.sonoma-county.org/prmd/gp2020/adopted/index.htm) depict the habitats whose locations are known and considered important for protection at this time. However, the biotic habitat policies provide for protection of biotic habitats both within and outside designated areas. Currently available information on the location and value of native habitats and sensitive resources is incomplete and changes over time as sites are assessed, new occurrences are reported, and additional locations are identified. As more habitat mapping information becomes available in the future, changes in designations will be considered along with possible policy changes. Regular collection and updating of reliable information and refinement of best management practices are necessary to protect the County's biotic resources over the long term. The intent of the plan is that policies, guidelines, and standards be clear and direct so that property owners and citizens may easily understand its provisions and how they apply to parcels of land as well as their cumulative impact on future environmental conditions and quality of life. The broad purpose of the Sonoma County General Plan is to express policies which will guide decisions on future growth, development, and conservation of resources through 2020 in a manner consistent with the goals and quality of life desired by the county's residents. Under State law many actions on private land development, such as specific plans, area plans, zoning, subdivisions, public agency projects and other decisions must be consistent with the general plan. The goals, objectives, and policies set forth in the plan will be applied in a manner to insure their constitutionality. Per Title 7, Division 1 of the Government Code of the State of California. Article 5, Section 65300 et seq, the County of Sonoma is required to adopt a comprehensive general plan to guide its future physical development. Therefore, as required by law, the 2020 Sonoma County General Plan was officially adopted on September 23, 2008. Related Resources: Sonoma County General Plan 2020 Index [includes amendments since adoption] http://www.sonoma-county.org/prmd/gp2020/index.htm Sonoma County General Plan 2020 Open Space and Resource Conservation Biotic Resources Element http://www.sonoma-county.org/prmd/gp2020/adopted/osrce.pdf
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Title: Future Parks, Sonoma County, California, 2010
Contributors:- Point data
- 2010
Summary: The future parks dataset represents the Open Space and Resource Conservation Outdoor Recreation Element 9 of the Sonoma County General Plan 2020 as adopted on September 23, 2008 by Resolution No. 08-0808. The outdoor recreation element assist in identifying and preserving adequate parklands and trails primarily in locations that are convenient to urban areas and on public lands to meet the outdoor recreation needs of the population, while not affecting agricultural uses. Therefore, the FUTURE designated outdoor recreation areas to provide pleasure and enjoyment for County residents are represented in this dataset. Figures OSRC-3, 4, and 5a through 5i show designated outdoor recreation areas. Per the use in the Sonoma County General Plan, the corridor data was created by the County of Sonoma, Open Space District and revised by the Permit and Resource Management Department (PRMD). The intent of the plan is that policies, guidelines, and standards be clear and direct so that property owners and citizens may easily understand its provisions and how they apply to parcels of land as well as their cumulative impact on future environmental conditions and quality of life. The broad purpose of the Sonoma County General Plan is to express policies which will guide decisions on future growth, development, and conservation of resources through 2020 in a manner consistent with the goals and quality of life desired by the county's residents. Under State law many actions on private land development, such as specific plans, area plans, zoning, subdivisions, public agency projects and other decisions must be consistent with the general plan. The goals, objectives, and policies set forth in the plan will be applied in a manner to insure their constitutionality. Per Title 7, Division 1 of the Government Code of the State of California. Article 5, Section 65300 et seq, the County of Sonoma is required to adopt a comprehensive general plan to guide its future physical development. Therefore, as required by law, the 2020 Sonoma County General Plan was officially adopted on September 23, 2008. Related Resources: Sonoma County General Plan 2020 Index [includes amendments since adoption] http://www.sonoma-county.org/prmd/gp2020/index.htm Sonoma County General Plan 2020 Open Space and Resource Conservation Outdoor Recreation Element http://www.sonoma-county.org/prmd/gp2020/adopted/osrce.pdf
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Title: Existing Parks, Sonoma County, California, 2010
Contributors:- Polygon data
- 2010
Summary: The existing parks dataset represents the Open Space and Resource Conservation Outdoor Recreation Element 9 of the Sonoma County General Plan 2020 as adopted on September 23, 2008 by Resolution No. 08-0808. The outdoor recreation element assist in identifying and preserving adequate parklands and trails primarily in locations that are convenient to urban areas and on public lands to meet the outdoor recreation needs of the population, while not affecting agricultural uses. Therefore, the EXISTING designated outdoor recreation areas to provide pleasure and enjoyment for County residents are represented in this dataset. Figures OSRC-3, 4, and 5a through 5i show designated outdoor recreation areas. Per the use in the Sonoma County General Plan, the corridor data was created by the County of Sonoma, Open Space District and revised by the Permit and Resource Management Department (PRMD). The intent of the plan is that policies, guidelines, and standards be clear and direct so that property owners and citizens may easily understand its provisions and how they apply to parcels of land as well as their cumulative impact on future environmental conditions and quality of life. The broad purpose of the Sonoma County General Plan is to express policies which will guide decisions on future growth, development, and conservation of resources through 2020 in a manner consistent with the goals and quality of life desired by the county's residents. Under State law many actions on private land development, such as specific plans, area plans, zoning, subdivisions, public agency projects and other decisions must be consistent with the general plan. The goals, objectives, and policies set forth in the plan will be applied in a manner to insure their constitutionality. Per Title 7, Division 1 of the Government Code of the State of California. Article 5, Section 65300 et seq, the County of Sonoma is required to adopt a comprehensive general plan to guide its future physical development. Therefore, as required by law, the 2020 Sonoma County General Plan was officially adopted on September 23, 2008. Related Resources: Sonoma County General Plan 2020 Index [includes amendments since adoption] http://www.sonoma-county.org/prmd/gp2020/index.htm Sonoma County General Plan 2020 Open Space and Resource Conservation Outdoor Recreation Element http://www.sonoma-county.org/prmd/gp2020/adopted/osrce.pdf
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Title: Planning Area Policies, Sonoma County, California, 2015
Contributors:- Point data
- 2015
Summary: The General Plan Planning Area Policy dataset represents General Plan 2020 and zoning land development policies that are applicable to (site) specific properties within Sonoma County. The intent of the plan is that policies, guidelines, and standards be clear and direct so that property owners and citizens may easily understand its provisions and how they apply to parcels of land as well as their cumulative impact on future environmental conditions and quality of life. The broad purpose of the Sonoma County General Plan is to express policies which will guide decisions on future growth, development, and conservation of resources through 2005 in a manner consistent with the goals and quality of life desired by the county's residents. Under State law many actions on private land development, such as specific plans, area plans, zoning, subdivisions, public agency projects and other decisions must be consistent with the general plan. The goals, objectives, and policies set forth in the plan will be applied in a manner to insure their constitutionality. Per Title 7, Division 1 of the Government Code of the State of California. Article 5, Section 65300 et seq, the County of Sonoma is required to adopt a comprehensive general plan to guide its future physical development. Therefore, as required by law, the 2020 Sonoma County General Plan was officially adopted on September 23, 2008 The dataset includes Rezones associated with GP2020 as adopted by Ordinance 5801 on September 23, 2008. Related Resources: Sonoma County General Plan 2020 Index [includes amendments since adoption] http://www.sonoma-county.org/prmd/gp2020/index.htm Planning Area Policies http://www.sonoma-county.org/prmd/gp2020/adopted/lue.pdf
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Title: Supervisor Districts, Sonoma County, California, 2013
Contributors:- Polygon data
- 2013
Summary: The board of supervisor dataset represents the five geographical sub regions of Sonoma County's legislative body which governs the largest political/jurisdictional boundary of local government within the State of California. The Board of Supervisors of the County of Sonoma is charged with the responsibility of establishing policy to guide the various functions of the County and, where necessary, to establish procedures by which functions are performed. The Board is composed of five supervisors elected from supervisorial districts for four year terms. As the county legislative body, the responsibilities of the Board of Supervisors are diverse. A major task of the Board of Supervisors is to manage the public money which comes to the county from property tax, sales tax, fees, and federal and state income grants. The Board of Supervisors is committed to providing the highest quality service to the public in a timely manner. To insure that the public is heard on issues of concern, the Board of Supervisors provides a forum for problem solving as it relates to government agencies and processes. To meet that goal, the Board also provides information and appropriate referrals to individuals who can resolve conflicts between individual citizens and the county departments. The Sonoma County Board of Supervisors sits as the governing board of Sonoma County and of various special jurisdictions such as the Sonoma County Water Agency, the Northern Sonoma County Air Pollution Control District, the Agricultural Preservation and Open Space District, County Sanitation Districts, and the Community Development Commission.
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Title: City Limits, Sonoma County, California, 2012
Contributors:- Polygon data
- 2012
Summary: The city limit dataset represents the nine city, urban (incorporated) municipality boundaries within the County of Sonoma. This layer takes into account ALL RECORDED ANNEXATIONS as of December 31, 2012. See Data Quality - Attribute Accuracy tab for boundary modification history.
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Title: Local Area Development, Sonoma County, California, 2012
Contributors:- Polygon data
- 2012
Summary: The local area development guideline dataset represents the discreet geographical areas subject to specific development guidelines within Sonoma County. The local area development guidelines and goals are as follows: Canon Manor West Subdivision Development Guideline The boundary polygon represents the Canon Manor West Subdivision Development Guideline, 237+/- acres located southwest of the intersection of Petaluma Hill Road and East Cotati Avenue, adopted by Ordinance #5675 & #5676 on July 18, 2006. The Canon Manor West Subdivision Development Guideline boundary surrounds those parcels subject to water conservation measures as described in Ordinance #5676. To note, Ordinance #5675 outlines the approved rezoning of the subject area [refer to adopted documentation for further insight]. - - - - Glen Ellen Development and Design Guideline, Subarea I & II The boundary polygon represents the Glen Ellen Development and Design Guideline adopted by Ordinance #4297 on November 14, 1990. The Glen Ellen Development and Design Guidelines boundary surrounds those parcels within subareas I and II of the Glen Ellen Study Area. The following applications within the subareas shall be evaluated in accordance with the Glen Ellen Development and Design Guidelines: Subarea I (exterior building permits, discretionary permits, and projects subject to administrative design review), and Subarea II (discretionary permits). The goal of the Glen Ellen Development and Design Guidelines is to direct development so that the character of Glen Ellen is enhanced and maintained. The guideline defines a local area, as a subunit of a planning area, which will provide a greater level of detail for specific uses or development in a local area. The Glen Ellen Development and Design Guidelines represent revised goals, objectives, policies and design guideline contained in previous versions of the Glen Ellen Town Plan (February 1988 and November 1988). - - - - Highway 12 Development Guideline The boundary polygon represents the Highway 12 Development Guideline adopted by Ordinance #5120 on August 25, 1998. The Highway 12 Development Guideline is applicable to parcels having frontage on Highway 12 from its intersection at El Verano Avenue, north, to its intersection at Agua Caliente Road. The Highway 12 Development Guideline is in conjunction with the Sonoma Valley Redevelopment Project Area. The goal of the Highway 12 Development Guideline is to provide criteria for private development to ensure the consistency of each individual project with the overall character of the Hwy 12 corridor. - - - - Highway 116 Scenic Corridor Study Guideline The boundary polygon represents the 116 Scenic Highway Corridor Study Guideline adopted by the State of California's Department of Transportation (Caltrans) on September 20, 1988. The goal of the 116 Scenic Highway Corridor Study is to protect and enhance the corridor. Therefore, the corridor limits are principally determined by topography (land forms) and/or large, dense stands of vegetation limiting views from the highway. If vegetation or man-made structures do not obstruct views from the highway, the farthest ridge lines are the limits of the corridor. Only those ridges visible from the corridor are included; consequently, areas behind ridges are not included. The width of the corridor varies greatly from as little as 100 feet to as much as 14,000 feet. Property within the corridor could be subject to higher levels of planning controls to preserve the scenic quality. - - - - Penngrove Main Street Design Guidelines The boundary polygon represents the Penngrove Main Street Design Guidelines adopted by Ordinance #5920 on December 14, 2010. The goal of the Penngrove Main Street Design Guidelines is to evaluate the merits of projects located in and around Main Street in Penngrove, between Old Redwood Highway and Adobe Road, and as specifically depicted by Figure E of Ordinance # 5920 article. Building permits involved new construction, or the exterior modification of existing structures, are subject to review to ensure conformance with the Penngrove Main Street Design Guidelines. In addition, all projects requiring discretionary entitlements, such as Design Review approval, Zoning Permits, and Use Permits, must comply with the Penngrove Main Street Design Guidelines. - - - - Russian River Corridor Design Guidelines The boundary polygon represents the Russian River Corridor Design Guidelines adopted by Ordinance #5921 on December 14, 2010. The goal of the Russian River Corridor Design Guidelines is to evaluate the merits of projects located within the central corridor which runs through the Russian River Redevelopment Project Area, and as specifically depicted in Figure A of Ordinance #5921 article. The Russian River Corridor Design Guidelines apply to commercial and multi-family residential projects. Single family projects are only subject to the Design Guidelines when involving four or more units. Building permits involving new construction, or any exterior modification of existing structures, are subject to review to ensure conformance with the Russian River Corridor Design Guidelines, as are all projects which require discretionary entitlements such as Design Review, Zoning Permits, and Use Permits. - - - - Sebastopol Road Urban Vision Plan The boundary polygon represents the Sebastopol Road Urban Vision Plan adopted by Resolution #07-0481 on October 31, 2007. The Urban Vision Plan for Sebastopol Road Corridor affects that stretch of Sebastopol Road between Dutton Avenue to the east and Stony Point Road to the west, linking both sides of Sebastopol Road as well as the area north of Sebastopol Road, ending at the Highway 12 right-of-way. The corridor is within the community of Roseland in the southwest area of Santa Rosa, California. While portions of the subject area are within the boundaries of the City of Santa Rosa, the majority of the properties are located in the unincorporated area of Sonoma County. The goal of the Sebastopol Road Urban Vision Plan is to create a consensus among the local community as to what future development of the corridor should look like and what types of uses should be located there. The goal includes land use concept and urban design criteria for the greater planning area, street scape enhancements, and envisioning the Roseland Village Shopping Center and the Dutton Plaza as an ideal location for a neighborhood center. - - - - Taylor/Sonoma/Mayacamas Design Guidelines The boundary polygon represents the Taylor/Sonoma/Mayacamas Design Guidelines adopted by Ordinance #5935 on May 10, 2011. The adoption amends Section 26-90-050 of the Sonoma County code to replace the existing Taylor-Sonoma Mountain Development Guidelines due to following General Plan scenic landscape units. The boundary polygon was revised with Resolution #11-0462 adopted August 23, 2011. The goal of the Taylor-Sonoma Mountain Development Guideline is to reduce the visual impacts of residential related development within the Scenic Landscape Units of Taylor, Sonoma, and Mayacamas areas as visible from public roads.
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Title: Parcels, Sonoma County, California, 2012
Contributors:- Polygon data
- 2012
Summary: The parcel dataset represents ONLY unincorporated Sonoma County land and takes into account ALL RECORDED ANNEXATIONS as of December 31, 2012. The parcel dataset is based on an original parcel base obtained from the County of Sonoma, ISD/GIS (a.k.a. Central GIS). Due to the sensitive nature of land development datasets maintained by Sonoma County Permit and Resource Management Department [PRMD], only those parcels which have been reassigned a parcel number [APN] or have been reconfigured due to lot line adjustments, subdivision and/or merger/splits, are updated by PRMD GIS staff. [Note: Should you wish to obtain Central GIS, a non-ActiveMap/PRMD, parcel base dataset, please research vector data download link https://gis.sonoma-county.org/catalog.asp.] A distinction should be made with respect to this layer which includes GIS parcels and the official Assessor Parcels residing in the Assessor Map books at the Sonoma County Assessor Office. For official parcel records please contact the Sonoma County Assessor (707)565-1888. These parcels should NOT be represented as survey data, and the official record of survey takes precedence where there are discrepancies. It is the end user's responsibility to check the accuracy of the GIS data by comparing it with the published data from the Sonoma County Assessor / Recorder office. The Sonoma County parcel base was originally compiled from Assessor Parcel maps at a scale of 1:6000. The individual Assessor Parcel maps were enlarged or reduced in size using an electrostatic process to produce the maps at the 1:6000 scale, the maps were then fit together by hand and transcribed on to mylar. The mylar base consisted of 1:6000 USGS base map information typically found on the 7.5 USGS quad series. This base information consisted of Topography, Roads, Section, and Rancho lines to name some. Using this information, the Assessor Parcel maps were fit to the individual 1:6000 scale maps. Each 1:6000 scale map represents 1/6 (quad sixths) of a 7.5 minute USGS Quadrangle series map. In 1998 the State Board of Equalization provided the impetus to produce the Russian River Project for all of Planning Area 4. One aspect required for this project was a digital parcel base for Planning Area 4. This involved the conversion of the 1:6000 mylars with the transcribed parcels on them into a digital version of the parcels. The mylars where scanned and geo-referenced using the base map information originally included with the 1:6000 mylar base. The maps were geo-referenced to a digital version of the USGS 7.5 minute Quadrangle series available from the Teale Data Center. The original projection was California State Plane Zone 2 NAD 1927. County Staff then used AutoCAD software to heads up digitize each 1:6000 scale map in Planning Area 4. A custom application was created and used by GIS staff involving the use of Avenue and ArcView 3.2 to create a point for all the parcels in Planning Area 4, attributes included Assessor Parcel Number. The DWGs were then converted to shapefiles and then converted to ArcINFO coverages, the parcel tags were converted from shapefiles to ArcINFO coverages and the point coverage was merged with the polygon coverage with the IDENTITY command. An exhaustive process was involved to eliminate errors once the DWGs were converted to ArcINFO coverages so polygons could be generated. The coverages were then aggregated using the MAPJOIN command, the original boundary of the 1:6000 scale maps was removed using the REGIONDISSOLVE command to merge adjacent polygons with the same AP number. In 1999 the remainder of the planning areas were converted to digital form following the Russian River Project and the seamless base was completed in 2001. The seamless parcel base was maintained in ArcINFO until the release of ArcGIS 8.3, which included topology tools necessary for its maintenance. The seamless base prior to late 2002 was suitable for 1:100000 scale while the control points (the corners for the 1:6000 scale maps) were suitable for 1:24000 scale. Prior to rectification to the Merrick 2000 orthophotography, the parcel data were derived from 1:6000 scale maps (enlarged from USGS 7.5 minute quadrangle 1:24,000 series) and digitized in California State Plane, Zone II, NAD 27 coordinates (survey feet), but were converted to California State Plane, Zone II, NAD 83 coordinates (survey feet) as part of a rectification process now underway. The parcels used to use the USGS 7.5 minute quadrangle (1:24,000) series for coordinate control, but no guarantee is made for their spatial accuracy. The data were re-projected to NAD 83 coordinates to overlay the orthophotography, but the parcel boundaries will not correspond precisely with features in the images. The parcels were rectified to orthophotography flown in April - May 2000 using geo-referencing tools available in ArcGIS 8.3. This project was completed in July 2005. In general, the parcels meet National Accuracy Standards for 1:24,000 scale maps, and likely exceed that accuracy in urban areas. A complete description of the process is detailed in a series of documents located on a local file server: S:\COMMON\GIS\Documentation\Parcel Rectification & Update Process\Procedure - *. doc. A brief summary is as follows. Individual Assessor Parcel pages or CAD drawings are rectified to the orthophoto. COGO & survey data are used when available and in sufficient quantities to enable the bulk of an Assessor Parcel page to be digitized using said information. Polygons are generated directly from the COGO data, CAD dwg are exported to feature classes, where polygons are then generated, rectified Assessor Parcel pages are vectorized using ArcScan and subsequently polygons are generated. A spatial join is used to assign attributes to the newly generated polygons. Polygons are then assigned an accuracy rank based on source, quality of the fit to the orthophoto, and RMS error encountered during rectification (only the scanned Assessor maps will have and RMS error associated with them). See the fields RANK and DESCRIPTION for information on fit assessment. Areas that have been successfully updated as such have a reasonable expectation of accuracy of +/- 10 and possibly better, areas that have not been updated or are flagged in SCAMP (http://sc-gis/web/scamp/browse.jsp) under the GIS group Projects as Needs Survey Data, the original accuracy assessment of 1:100000 applies.
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Title: Land Use Policy, Sonoma County, California, 2012
Contributors:- Polygon data
- 2012
Summary: The General Plan land use policy dataset represents Sonoma County General Plan 2020 and zoning land development policies that are applicable to (site) specific properties within Sonoma County. The intent of the plan is that policies, guidelines, and standards be clear and direct so that property owners and citizens may easily understand its provisions and how they apply to parcels of land as well as their cumulative impact on future environmental conditions and quality of life. The broad purpose of the Sonoma County General Plan is to express policies which will guide decisions on future growth, development, and conservation of resources through 2020 in a manner consistent with the goals and quality of life desired by the county's residents. Under State law many actions on private land development, such as specific plans, area plans, zoning, subdivisions, public agency projects and other decisions must be consistent with the general plan. The goals, objectives, and policies set forth in the plan will be applied in a manner to insure their constitutionality. Per Title 7, Division 1 of the Government Code of the State of California. Article 5, Section 65300 et seq, the County of Sonoma is required to adopt a comprehensive general plan to guide its future physical development. Therefore, as required by law, the 2020 Sonoma County General Plan was officially adopted on September 23, 2008. Related Resources: Sonoma County General Plan 2020 Index [includes amendments since adoption] http://www.sonoma-county.org/prmd/gp2020/index.htm Planning Area Policies http://www.sonoma-county.org/prmd/gp2020/adopted/lue.pdf