Unincorporated Areas Layer. This is the official GIS layer representing Unincorporated Areas within Santa Clara County. This layer is maintained by the Planning Office for the benefit of LAFCO.

Earthquake Fault Rupture Zones are regulatory zones around active faults (USGS 2005). The zones are defined by turning points connected by straight lines. Fault rupture zones do not correspond with Alquist-Priolo fault zones.

The Points of Interest (POI) Dataset is a digital representation of the physical geographic and commercial features across all of Santa Clara County. This dataset aims to provide accurate location information in the map. Sources: Info USA (2010), California Department Of Education (2016), Santa Clara County Combined data (2016).

The Alquist-Priolo Earthquake Fault Zones and fault traces as shown on the Official Alquist-Priolo Earthquake Fault Zones Map of the Santa Clara County. Alquist-Priolo fault zones do not correspond with fault rupture zones. The Alquist-Priolo Earthquake Fault Zoning Act was passed in 1972 to mitigate the hazard of surface faulting to structures for human occupancy. This state law was a direct result of the 1971 San Fernando Earthquake, which was associated with extensive surface fault ruptures that damaged numerous homes, commercial buildings, and other structures. Surface rupture is the most easily avoidable seismic hazard. It directs the State of California Department of Conservation - Geological Survey to compile detailed maps of the surface traces of known active faults. The Alquist-Priolo Earthquake Fault Zoning Act's main purpose is to prevent the construction of buildings used for human occupancy on the surface trace of active faults. The 1:24,000-scale (24K) U.S. Geological Survey (USGS) quadrangle boundary data set contains the approximate boundaries of the various 24K USGS quadrangles and the names and indexing codes associated with each 24K quadrangle. Original Source: : http://www.quake.ca.gov/gmaps/ap/ap_maps.htm.

Hospital location inside the Santa Clara County .

Court house location indise the Santa Clara County .

A cadastral map is a map showing the boundaries of subdivisions of land. It is based on bearings, lengths and areas of individual tracts, for purposes of describing and recording ownership.This is four equal section of the 500 grid. Some areas on the cadastral map may also show topography, drainage, and other features relating to the value of the land and its uses. The cadastral map number is the first number used in the series of three numbers for determining the County Grid Number. The Cadastral Map layer is comprised of the County Cadastral Maps series that cover the entire County of Santa Clara. It contains 281 individual maps and numbered from west to east and from north to south. Cadastral Map No. 1 is in the northwest area of Santa Clara County. Each cadastral map covers approximately 150,000,000 square feet. The information on these maps were last updated about 1986-1988. A corner record is the means by which the re-establishment or rehabilitation of public land survey corners or other property corners may be made of record and brought to public attention.

Census blockgroup geometry within Santa Clara County from the 2010 Census Tiger shapefiles. Feature class derived from Tiger line shapefile of 2010 census blockgroups for Santa Clara County and geographic identifier table, G001. Some attribute names may be when exporting as shapefile due to 10 character limitation of shapefile attribute names.

City Hall location inside the Santa Clara County . Source : City Website

Census tract geometry within Santa Clara County from the 2010 Census Tiger shapefiles.Feature class derived from Tiger line shapefile of 2010 census tracts for Santa Clara County and geographic identifier table, G001. Some attribute names may be when exporting as shapefile due to 10 character limitation of shapefile attribute names.