The Northern California Earthquake Data Center (NCEDC) is a permanent archive and distribution center primarily for multiple types of digital data relating to earthquakes in central and northern California.
SACOG creates and maintains a tremendous quantity of data, including maps about the Sacramento region which covers El Dorado, Placer, Sacramento, Sutter, Yolo and Yuba Counties and the cities within each county.
Map and geospatial data from the Southern California Association of Governments. The SCAG Region covers Los Angeles, Orange, San Bernardino, Riverside, Ventura and Imperial counties.
The SCAG Data Services Program was initiated and organized starting in the late 1980s with the goal of being the preeminent source of information for the southern California region.