Product: These are 2D data as part of the required deliverables for the lidar project. Geographic Extent: Santa Clara county, California, covering approximately 1771 square miles. Dataset Description: The lidar project called for the Planning, Acquisition, processing and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.35 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 2.1. The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane, Feet and vertical datum of NAVD88 (GEOID18), Feet. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to 8185 individual 2500 ft x 2500 ft tiles, as tiled intensity rasters, and as tiled bare-earth DEMs; all tiled to the same 2500 ft x 2500 ft schema. Ground Conditions: Lidar was collected in early 2020, while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Sanborn Map Company, Inc., utilized a total of 25 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 125 independent accuracy checkpoints, 70 in Bare Earth and Urban landcovers (70 NVA points), 55 in Tall Grass and Brushland/Low Trees categories (55 VVA points), were used to assess the vertical accuracy of the data. These check points were not used to calibrate or post process the data.

Building outlines derived from LiDAR data 2020. Geographic Extent: Santa Clara County, California, covering approximately 1771 square miles. Dataset Description: The lidar project called for the Planning, Acquisition, processing, and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.35 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 2.1. The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane, Feet, and vertical datum of NAVD88 (GEOID18), Feet. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to 8185 individual 2500 ft x 2500 ft tiles, as tiled intensity rasters, and as tiled bare-earth DEMs; all tiled to the same 2500 ft x 2500 ft schema. Ground Conditions: Lidar was collected in early 2020, while no snow was on the ground and rivers were at or below normal levels. In order to post-process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Sanborn Map Company, Inc., utilized a total of 25 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 125 independent accuracy checkpoints, 70 in Bare Earth and Urban land covers (70 NVA points), 55 in Tall Grass and Brushland/Low Trees categories (55 VVA points), were used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post-process the data.

There are no use limitations for this 2D building dataset. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Building polygons in this dataset may not reflect the exact shape of the actual building footprint. This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10-cm RMSEz Vertical Accuracy Class. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey and Sanborn Map Company would be appreciated for products derived from these data.
THE GIS DATA IS PROVIDED "AS IS". THE COUNTY MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE ACCURACY, COMPLETENESS, VALUE, QUALITY, VALIDITY, MERCHANTABILITY, SUITABILITY, AND CONDITION, OF THE GIS DATA. USER'S OF COUNTY'S GIS DATA ARE HEREBY NOTIFIED THAT CURRENT PUBLIC PRIMARY INFORMATION SOURCES SHOULD BE CONSULTED FOR VERIFICATION OF THE DATA AND INFORMATION CONTAINED HEREIN. SINCE THE GIS DATA IS DYNAMIC, IT WILL BY ITS NATURE BE INCONSISTENT WITH THE OFFICIAL COUNTY DATA. ANY USE OF COUNTY'S GIS DATA WITHOUT CONSULTING OFFICIAL PUBLIC RECORDS FOR VERIFICATION IS DONE EXCLUSIVELY AT THE RISK OF THE PARTY MAKING SUCH USE

Percentage of county residents with completed COVID-19 vaccination by census tract of residence. Source: California Immunization Registry. Note: Number of people with completed vaccination is the number of county residents who either received a vaccine requiring a single dose or received the final dose of a vaccine requiring multiple doses. Percent of residents vaccinated and population age 5 years and older is based in part on estimates of the number of people residing in the census tract from a population-based survey sample, which is subject to error. As a result, percent vaccinated may be over- or under-estimated. For this reason, the displayed percent of residents vaccinated in a census tract is capped at 95%.

COVID-19 vaccination among county residents by census tract is updated every Tuesday.

Catalog of Enterprise Systems published in accordance with California Government Code section 6270.5. "Enterprise system” means a software application or computer system that collects, stores, exchanges, and analyzes information

The County Photographers' Collection consists of over 57,000 images which depict a wide array of the County's activities and development between 1950 and 1993. The pictures include aerial photographs of rural and urban parts of the county; portraits, award ceremonies, and retirement functions of county officials and employees; interior and exterior construction progress of various county buildings, such as the county government center, county service center, juvenile center, public and mental health centers, county jails and hospitals; and a variety of photographs that include the airports, schools, courts, and parks throughout the county. Of the 57,000 images, approximately 50,000 are negatives, 2,500 slides, and 4,500 prints. The photographs are available for viewing at the County Archives. For additional information about the collection, please see the description in the http://www.oac.cdlib.org/findaid/ark:/13030/kt00002317

This catalog of Collections at the County Archives includes a listing of records and materials housed and available for research and viewing in our reading room by appointment. Please contact us to book an appointment. Please visit the Clerk-Recorder’s Office website for records indicating to contact their office.

The County Probate Cases Collection consists of approximately 2,100 cases heard by the Probate Court between May 1893 and September 1908, and 144 sets of probate vouchers that range from 1901 to 1913, and 1965 to 1967. Each case includes those papers filed with the court as part of the proceedings. Files may include wills, detailed lists of property, collections of claims by creditors, and various legal papers. Files may provide extensive information about the decedent, about costs for the period, and about the operation of a farm, business, or profession. This collection does not include all cases heard by the Probate Court in the period 1893 to 1908; there are a number of gaps and missing cases.

You may search the probate cases collection using the index below. Each entry includes the name of the decedent, the case number, the date of filing, and, often. additional remarks. The case files are available at the County Archives.

he Henry B. and Raymond W. Fisher Survey Collection consists of approximately 1,700 surveys made by Henry B. Fisher and by his son, Raymond W. Fisher, from the 1890s until the 1960s, primarily in Santa Clara County. The surveys are of private property, both rural and urban, and typically include one or more maps or drawings and pages of calculations and/or written descriptions of property boundaries. Many surveys are plans for subdivisions in Santa Clara County, and the collection also includes many plans for capital improvements such as sewer systems and roads improvements.

You may search the surveys collection by using the index below. Each entry typically includes the survey number, the property owner, names of streets bordering the property, the city (if applicable), the survey date, the surveyor, and additional notes about the survey. The surveys are available at the County Archives.

The County Wills Collection consists of approximately 10,000 wills filed with the County Clerk. The wills date from the early twentieth century into the 1970s, with the bulk of the wills from the years after 1940.

You may search the wills collection using the index below. Each entry includes the name of the individual writing the will, his or her city of residence, the date of the will, and, occasionally, additional remarks. The wills are available at the County Archives.

The Register of Dentists consists of 94 registrations from 1903 to 1922. These registrations show dentists who were allowed to practice dentistry in the state of California and who registered in the County of Santa Clara.

You may search the registrations using the index below. Each index entry includes the name of the dentist, their age, date of license, number of license, date of registration with the county, birth place, birth date, and notes. The Register of Dentists, which contains the registrations, is available at the County Archives. Additional information about any registration also may be obtained by contacting the Archives by e-mail or phone.