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Data format: Shapefile File or table name: Cities Coordinate system: Lambert Conformal Conic Theme keywords: Incorporated City, Municipality, Boundary, Annexation, Detachment |
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Abstract:
A graphical representation of the compiled boundary or individual boundary actions for an incorporated city. |
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Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
A graphical representation of the compiled boundary or individual boundary actions for an incorporated city.
The shapefile was created to provide a spatial reference for boundary information. It is a graphical depiction for reference only. The records that define the boundary are described in the supplementary information section.
Resolutions, ordinances, minute orders, exhibit maps and legal descriptions for formation, annexation, detachment and reorganization actions were compiled from incorporated cities, the Local Agency Formation Commission (LAFCO), the County Surveyor, the Clerk of the Board of Supervisors, and the County Recorder. For the compiled boundary, annexations were merged to the formation, whereas detachments were clipped out. "Cities.shp" includes the ocean extents if present ina city, whereas "cities_no_ocean.shp" does not.
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NOTICE OF DISCLAIMER: This data is for reference only. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the database may be reflected in this data. Santa Barbara County shall not be liable for any errors, omissions, or damages that result from inappropriate use of this document. No level of accuracy is claimed for the boundary lines shown hereon and lines should not be used to obtain coordinate values, bearings or distances.
123 East Anapamu Street, Suite 222
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Santa Barbara County, Public Works Department, Surveyor Division
Up to 7/23/2010, the number of folders for boundary activity were reviewed and compared to the amount of records in the shapefile. Some actions were found to be void and were not depicted. Previously voided folders were not reviewed. Out-of-Agency service Agreements (OOASAs) from 1994 were reviewed. Only two OOASAs included LAFCO resolutions that changed the Sphere-of-Influence (SOI) for a local agency: Santa Barbara and Solvang. As stated in the Supplemental Information section, the actions were processed into a compiled boundary. Total records before compilation: (Includes one Sphere-of-Influence record per each local agency) Buellton: 2 Carpinteria: 30 Goleta: 2 Guadalupe: 14 Lompoc: 60 Santa Barbara: 120 (includes one OOASA modifying the SOI) Santa Maria: 80 Solvang: 5 (includes one OOASA modifying the SOI) The source shapefiles containing boundary activity is available from the County Surveyor. Detailed reports on such activity are available on the Cities page of the County Surveyor Web site.
The dataset is registered to the County Assessor's Cadastral Parcel Landbase dataset. The County Assessor's cadastral Parcel Landbase dataset has no established level of accuracy and is based on printed Assessor's Map Books. All records have at least one reference to a LACFO action or a city, county, or special district resolution. All approved actions that have a hardcopy reference or a entry in a hardcopy index have been shapefiled. All areas of possible gross misregistration have been reviewed. If the district boundary does not follow Assessor's parcels, it may be for one of the following reasons: 1. The record makes calls to courses that existed before subdivision or before a Lot Line Adjustment. (usually when a district line crosses parcel lines at an angle). 2. A record makes a call to the near side, centerline, or far side a road right-of-way, but the neighboring record does not make a call to the same location (usually resulting in an island or gap). 3. The Assessor's parcel layer has been edited for increased accuracy, but the city or district boundary has not been edited to match. (usually resulting in parallel misregistration along outside edges) 4. The record was incorrectly digitized. Due to the nature of its construction the County Assessor's Cadastral Parcel Landbase dataset has varying degrees of positional precision. It is useful to distinguish between positional accuracy and positional precision. In the Assessor's Cadastral Parcel Landbase feature class, the former refers to the relative accuracy of a given group of spatially related parcel polygons. In other words, for any given polygon, are the neighboring polygons in a proper or accurate relationship spatially with our subject polygon? Subjectively we find that the Assessor's Cadastral Parcel Landbase feature class positional accuracy is good to excellent. On the other hand, positional precision refers to an actual ground location and how well any determinable cadastral point in the dataset is related to this established ground location. As stated previously, this will vary depending on its general location. In those areas which were initially spatially referenced to the Flood Control Topo Map Sets, which are the areas of Santa Barbara city, the Goleta valley, the Santa Ynez valley, and the Santa Maria valley, there is consistently a positional horizontal error of between 3 and 6 feet. The lower figure would be within the city blocks themselves, and the higher figure in the areas outside the numbered orthogonal blocks. Outside of this control set, the nature of the precision may be quite varied. In the unpopulated areas outside the control of the Knopf GPS road set, there may be variances of more than 100-200 feet. For the majority of the populated areas, any horizontal positional precision would be between these general values, and more closer to the lower side given a reasonable distance and tie-in to the Knopf GPS road set. Ultimately it must be remembered that for many of the more antique legal descriptions that might reference, say, a rancho line, that a precise location of any given cadastral point is by its nature an abstraction unless referenced by a modern record of survey, and even then there may be serious discrepancies in the various surveys that are available. The southern Tepusquet Rd area is a prime example, where it would take a survey and the signed acquiescence of all of the affected property owners to truly call that area spatially precise in cadastral terms. "Notice: Assessor Parcels are for tax assessment purposes only..." In general, Rancho areas with less monuments and fewer records of measured distances are less accurate, whereas urban areas with a higher density of recorded monuments and therefore more repeated distance measurements are more accurate.
Survey-collected GPS coordinate data from a small sample of monuments were compared to corresponding vertices in the County Assessors's Cadastral Parcel Landbase (Assessor's Parcel Layer). Verifying survey data was obtained from horizontal positions derived by GPS observations holding Continuously Operating Reference Stations (CORS) or Control Points fixed as shown in Record of Survey Books, based on California Coordinate System 1983 (CCS83) 1991.35 epoch. The County Assessor's Cadastral Parcel Landbase dataset (Assessor's Parcel Layer) was obtained from the County Assessor.
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COUNTY SURVEYOR
123 E ANAPAMU STREET, SUITE 222
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