Description: The seamless, county-wide parcel layer was digitized from official Assessor Parcel (AP) Maps which were originally maintained on mylar sheets and/or maintained as individual Computer Aided Design (CAD) drawing files (e.g., DWG). The CRA office continues to maintain the official AP Maps in CAD drawings and Information Systems Department/Geographic Information Systems (ISD/GIS) staff apply updates from these maps to the seamless parcel base in the County’s Enterprise GIS. The seamless parcel layer is updated and published to the Internet on a monthly basis. The primary difference between this version and the ‘Parcels Public’ layer is the inclusion of additional attributes licensed for internal use ONLY.The seamless parcel layer was developed from the source data using the general methodology outlined below. The mylar sheets were scanned and saved to standard image file format (e.g., TIFF). The individual scanned maps or CAD drawing files were imported into GIS software and geo-referenced to their corresponding real-world locations using high resolution orthophotography as control. The standard approach was to rescale and rotate the scanned drawing (or CAD file) to match the general location on the orthophotograph. Then, appropriate control points were selected to register and rectify features on the scanned map (or CAD drawing file) to the orthophotography. In the process, features in the scanned map (or CAD drawing file) were transformed to real-world coordinates, and line features were created using “heads-up digitizing” and stored in new GIS feature classes. Recommended industry best practices were followed to minimize root mean square (RMS) error in the transformation of the data, and to ensure the integrity of the overall pattern of each AP map relative to neighboring pages. Where available Coordinate Geometry (COGO) & survey data, tied to global positioning systems (GPS) coordinates, were also referenced and input to improve the fit and absolute location of each page. The vector lines were then assembled into a polygon features, with each polygon being assigned a unique identifier, the Assessor Parcel Number (APN). The APN field in the parcel table was joined to the corresponding APN field in the assessor property characteristics table extracted from the MPTS database to create the final parcel layer. The result is a seamless parcel land base, each parcel polygon coded with a unique APN, assembled from approximately 6,000 individual map page of varying scale and accuracy, but ensuring the correct topology of each feature within the whole (i.e., no gaps or overlaps). The accuracy and quality of the parcels varies depending on the source. See the fields RANK and DESCRIPTION fields below for information on the fit assessment for each source page. These data should be used only for general reference and planning purposes. It is important to note that while these data were generated from authoritative public records, and checked for quality assurance, they do not provide survey-quality spatial accuracy and should NOT be used to interpret the true location of individual property boundary lines. Please contact the Sonoma County CRA and/or a licensed land surveyor before making a business decision that involves official boundary descriptions.
Copyright Text: County of Sonoma, Clerk Recorder Assessor (CRA), is the owner of this data; the County of Sonoma, ISD-GIS Central is the steward of this data. You must source attribution “County of Sonoma” when distributing this data (see “Use Limitations” below).
note_webpage_info (type: esriFieldTypeString, alias: For more information, or to download or request a paper form, visit the web page of the groundwater basin your parcel intersects:, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Confirm_Onsite_Well (type: esriFieldTypeString, alias: A1. Does the parcel use groundwater from a private well?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Num_Active_Wells (type: esriFieldTypeInteger, alias: A2. How many active wells are on the parcel?, SQL Type: sqlTypeOther, nullable: true, editable: true)
Num_Inactive_Wells (type: esriFieldTypeInteger, alias: A4. How many inactive or inoperable wells are on the parcel?, SQL Type: sqlTypeOther, nullable: true, editable: true)
Depth_Primary_Well (type: esriFieldTypeInteger, alias: A5. What is the depth (in feet) of the primary well on the parcel?, SQL Type: sqlTypeOther, nullable: true, editable: true)
n1 (type: esriFieldTypeString, alias: A6. The parcel is located on the boundary of a groundwater basin -, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Well_Monitoring (type: esriFieldTypeString, alias: A8. Would you be willing to have your well(s) monitored for scientific purposes?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No], [Undecided: Undecided])
Confirm_Shared_Well (type: esriFieldTypeString, alias: A9. Does the parcel use groundwater from a shared well on a nearby parcel?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Nearby_APN_Address (type: esriFieldTypeString, alias: A10. If yes, what is the APN or address of the nearby parcel?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
n2 (type: esriFieldTypeString, alias: Current Data - Parcel is within Public Water System -, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Confirm_Public_Water_System (type: esriFieldTypeString, alias: B1. Survey Participant Response - Does the parcel use water from a Public Water System?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Name_Public_Water_System (type: esriFieldTypeString, alias: B2. If the listed name is incorrect, please provide the correct name of the Public Water System., SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
n3 (type: esriFieldTypeString, alias: Current Data - Parcel uses surface water from a reservoir, stream, or other surface water diversion -, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Confirm_Surface_Water (type: esriFieldTypeString, alias: C1. Survey Participant Response - Does the parcel use surface water from a reservoir, stream, or other surface water diversion?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Annual_Gallons_Surface_Water (type: esriFieldTypeInteger, alias: C2. How many gallons of surface water is used each year?, SQL Type: sqlTypeOther, nullable: true, editable: true)
Registered_Diversion (type: esriFieldTypeString, alias: C3. Is the diversion registered or licensed with the state?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Reg_Diversion_Info (type: esriFieldTypeString, alias: C4. What is the registration, water right application or license number?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Diversion_Descrip (type: esriFieldTypeString, alias: C5. If not registered with the state, please briefly describe the surface water diversion., SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Confirm_Recycled_Water (type: esriFieldTypeString, alias: D1. Does the parcel use recycled water?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Name_Recycled_Water_Supplier (type: esriFieldTypeString, alias: D2. What is the name of the recycled water supplier?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Annual_Gallons_Recycled_Water (type: esriFieldTypeInteger, alias: D3. How many gallons of recycled water is used each year?, SQL Type: sqlTypeOther, nullable: true, editable: true)
n4 (type: esriFieldTypeString, alias: Current Data - Residential dwellings are on the parcel -, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Confirm_Residential_Dwellings (type: esriFieldTypeString, alias: A1. Survey Participant Response - Are there residential dwellings on the parcel?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Num_Residential_Dwellings (type: esriFieldTypeInteger, alias: A2. How many residential dwellings are on the parcel?, SQL Type: sqlTypeOther, nullable: true, editable: true)
Primary_Source_Household_Use (type: esriFieldTypeString, alias: A3. What is the primary source of water for residential use?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Onsite_Well: Onsite Well], [Shared_Well: Shared Well], [Public_Water_System: Public Water System], ... 2 more ...)
Annual_Gallons_Household_Use (type: esriFieldTypeInteger, alias: A4. If residential water use is based on a water meter reading or an invoice, please provide the annual gallon usage., SQL Type: sqlTypeOther, nullable: true, editable: true)
Hsehold_Use_with_Landscpe_Irrig (type: esriFieldTypeString, alias: A5. Does the residential water use you provided above include water used for landscape irrigation?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
n5 (type: esriFieldTypeString, alias: Current Data - Water is used for landscape irrigation -, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Confirm_Landscape_Irrig (type: esriFieldTypeString, alias: B1. Survey Participant Response - Is water used for landscape irrigation?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Primary_Src_Landscape_Irrig (type: esriFieldTypeString, alias: B2. What is the primary source of water for irrigated landscape?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Onsite_Well: Onsite Well], [Shared_Well: Shared Well], [Public_Water_System: Public Water System], ... 3 more ...)
Confirm_Agriculture_Use (type: esriFieldTypeString, alias: C1. Is water used for agricultural irrigation?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Primary_Src_Agri_Irrig (type: esriFieldTypeString, alias: C2. What is the primary source of water for agricultural irrigation?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Onsite_Well: Onsite Well], [Shared_Well: Shared Well], [Public_Water_System: Public Water System], ... 3 more ...)
Annual_Gallons_PrimarySrc_Agri (type: esriFieldTypeInteger, alias: C3. Estimate the number of gallons used each year from the primary source., SQL Type: sqlTypeOther, nullable: true, editable: true)
Est_Meter_Invoice_PrimSrc_Agri (type: esriFieldTypeString, alias: C4. Is agricultural water use based on water meter readings or an invoice?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Secondary_Src_Agri_Irrig (type: esriFieldTypeString, alias: C5. What is the secondary source of water for agricultural irrigation?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [None: None - No Secondary Source], [Onsite_Well: Onsite Well], [Shared_Well: Shared Well], ... 4 more ...)
Annual_Gallons_Scnd_Src_Agri (type: esriFieldTypeInteger, alias: C6. Estimate the number of gallons used each year from the secondary source., SQL Type: sqlTypeOther, nullable: true, editable: true)
Est_Meter_Invoice_Scnd_Src_Agri (type: esriFieldTypeString, alias: C7. Is secondary source water use based on water meter readings or an invoice?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No], [Not_Applicable: Not Applicable])
Confirm_Comm_Cannabis_Op (type: esriFieldTypeString, alias: C8. Is there Commercial Cannabis cultivation on this site?, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
n14 (type: esriFieldTypeString, alias: Current Data - Water is used for commercial, industrial, institutional, or other non-residential use -, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Confirm_Non_Residential_Use (type: esriFieldTypeString, alias: D1. Survey Participant Response - Is water used for commercial, industrial, institutional, or other non-residential use?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
Category_Non_Residential_Use (type: esriFieldTypeString, alias: D2. Select the category that best describes the use:, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Commercial: Commercial], [Government: Government], [Industrial: Industrial], ... 6 more ...)
Non_Residential_Other_Descrip (type: esriFieldTypeString, alias: D3. Briefly describe the primary use of the operation., SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Primary_Src_Non_Residential (type: esriFieldTypeString, alias: D4. What is the primary water source for commercial, industrial, institutional, or other non-residential use?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Onsite_Well: Onsite Well], [Shared_Well: Shared Well], [Public_Water_System: Public Water System], ... 3 more ...)
Annual_Gallons_Non_Residential (type: esriFieldTypeInteger, alias: D5. Estimate the number of gallons of water used each year for commercial, industrial, institutional, or other non-residential use., SQL Type: sqlTypeOther, nullable: true, editable: true)
Est_Meter_Invoice_Non_Resi (type: esriFieldTypeString, alias: D6. Is water use based on water meter readings or an invoice?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true, Coded Values: [Yes: Yes], [No: No])
PrimaryUse_Non_Resi_Descrip (type: esriFieldTypeString, alias: D7. Briefly describe the primary use of water:, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Concerns_About_Well (type: esriFieldTypeString, alias: 1. Do you have any concerns about groundwater or your well? If so, what are they?, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
Additional_Comments (type: esriFieldTypeString, alias: 2. Please enter any additional comments or information regarding your groundwater use that you would like to provide., SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)