SACOG's Research and Analysis Team coordinates Local, State and Federal information through our Mapping Center. The Center represents on 10 years of coordination with our members through county level GIS Cooperatives and working groups. These groups maintain GIS files on countywide basemaps aligned to tax parcels in El Dorado, Placer, Sacramento, Sutter Yuba and Yolo Counties. The groups coordinate updates to the GIS layers through county level meetings and quarterly meetings of SACOG's Regional GIS Coordination Committee.
This clearinghouse contains metadata, file owner-maintainer information, and in some many cases ESRI based shape files for the basic mapping layers in our region. In most cases, these GIS infrastructure layers have been developed on the County parcel base map. Users should read each metadata file to determine the appropriate uses and related layers that can be used each file.
One of our main requests in these post-census years is for reference maps showing US Census Bureau geographies such as tracts and blocks. Other reference maps available are Regional Analysis Districts-Minor Zone maps for use with Projections, or for Population, Housing and Employment estimates. Maps are available for our six county region containing El Dorado, Placer, Sacramento, Sutter, Yolo, and Yuba Counties.
