Description: Building outlines for permanent visible structures in Sonoma County. Original building outline capture for Sonoma County included only those areas in Sonoma County where the 2000 orthophotography resolution was one foot per pixel or less. In addition, building outlines were not captured for the cities of Sonoma and Healdsburg, but were added at a later date. For areas where the orthophotography resolution was greater than one foot per pixel, a point was captured representing the location of the structure. The point was subsequently converted into a 36 sf polygon. These polygons were then added to the Building Outline layer. As a result, some areas of the county may not have representative building outlines. As new orthophotography becomes available, new building outlines are added. This layer is a work in progress and the County of Sonoma does not guarantee 100% coverage for representative building outlines.
Description: The impetus for this project was to finally separate out parks and parkland accessible by the public from the public lands layer which contained both parkland and non parkland data. It was determined that a pure public lands layer was not the ideal repository for parks and parkland due to park boundaries not always following parcel lines, and in some cases ownership of the parcel(s) not being held by the public. Each municipal agency was queried for a list of their parks and park land, which was then, cross referenced with the ownership of the named area by referencing the owner of the parcel or parcels in the designated area. In some cases the municipality in question is not the owner of the parcel in question; rather it has an easement over the property which provides for the municipality to manage the property as a park for the public. In other cases it was clear that the entire parcel(s) was not dedicated for use as a park either by design or by other land uses on the property, in those cases the park shape deviates from the parcel shape.
Description: For official parcel records please contact the Sonoma County Assessor (707)565-1888. The GIS parcels have been and are continuing to be orthorectifed or improved to match the best available orthophotography. Improvement of the parcels is as follows; Individual Assessor Parcel pages in CAD dwg format 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. A spatial join is used to attribute 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, scanned assessor maps are no longer used but had been in the past) See the fields RANK and DESCRIPTION for information on fit assessment.
Description: For official parcel records please contact the Sonoma County Assessor (707)565-1888. The GIS parcels have been and are continuing to be orthorectifed or improved to match the best available orthophotography. Improvement of the parcels is as follows; Individual Assessor Parcel pages in CAD dwg format 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. A spatial join is used to attribute 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, scanned assessor maps are no longer used but had been in the past) See the fields RANK and DESCRIPTION for information on fit assessment.
Description: For official parcel records please contact the Sonoma County Assessor (707)565-1888. The GIS parcels have been and are continuing to be orthorectifed or improved to match the best available orthophotography. Improvement of the parcels is as follows; Individual Assessor Parcel pages in CAD dwg format 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. A spatial join is used to attribute 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, scanned assessor maps are no longer used but had been in the past) See the fields RANK and DESCRIPTION for information on fit assessment.