California Spatial Reference Center

California Spatial Reference Center
Name	California Spatial Reference Center
Type	Research and services center
Founded	2008
Location	Sacramento, California
Area served	California, United States
Focus	Geodesy, surveying, mapping, spatial data infrastructure

California Spatial Reference Center is a state-level facility focused on maintaining and disseminating spatial reference frameworks for California, coordinating between federal agencies, academic institutions, and local jurisdictions. The Center supports accurate positioning and geospatial interoperability for infrastructure, emergency response, natural resource management, and scientific research. It operates within a network of land survey, navigation, and mapping organizations to ensure consistency with national and international reference systems.

History

The Center was established as part of efforts to modernize positioning in California following initiatives by the National Geodetic Survey, United States Geological Survey, and the Federal Emergency Management Agency to improve resilience after events involving seismic hazards like the 2004 Parkfield earthquake and infrastructure failures such as the 1994 Northridge earthquake. Early collaborations involved universities including University of California, Berkeley, California Institute of Technology, Stanford University, and San Diego State University alongside state agencies such as the California Department of Transportation and the California Governor's Office of Emergency Services. Federal programs like the National Spatial Data Infrastructure and international standards from organizations like the International Association of Geodesy informed design choices. Partnerships expanded to include professional bodies such as the American Congress on Surveying and Mapping, the National Society of Professional Surveyors, and technical standards from Open Geospatial Consortium. The Center’s evolution paralleled advances by firms and labs including Trimble, Leica Geosystems, Esri, and research centers at the Scripps Institution of Oceanography.

Mission and Objectives

The Center’s mission aligns with directives from the California Department of Water Resources, the California Natural Resources Agency, and interoperability goals set by the National Oceanic and Atmospheric Administration to maintain a consistent spatial reference for civil infrastructure and environmental monitoring. Objectives include adopting reference frames consistent with the North American Datum of 1983, transitioning to the North American Terrestrial Reference Frame of 2022, supporting datum modernization advocated by the National Geodetic Survey, and enabling precise positioning for programs run by the California Energy Commission, California Coastal Commission, and the California Air Resources Board. The Center also serves stakeholders such as the Metropolitan Water District of Southern California, San Francisco Public Utilities Commission, and the Los Angeles Department of Water and Power.

Organizational Structure and Partnerships

Organizationally, the Center coordinates across state departments including the California Department of Transportation, the California State Lands Commission, and the California Geological Survey, while engaging federal partners like the National Geodetic Survey, United States Geological Survey, Federal Aviation Administration, and the National Aeronautics and Space Administration. Academic collaborators include the University of California, Los Angeles, University of California, Davis, California State University, Sacramento, California Polytechnic State University, and research institutes such as Lawrence Berkeley National Laboratory and Jet Propulsion Laboratory. Professional associations and consortia involved include the American Society of Civil Engineers, the Institute of Electrical and Electronics Engineers, URISA, and regional entities like the Association of Monterey Bay Area Governments and the Sacramento Area Council of Governments. Private sector partners include Google, Apple Inc., HERE Technologies, and surveying firms organized under the American Congress on Surveying and Mapping.

Services and Products

The Center issues geodetic control data, maintains Continuously Operating Reference Stations coordinated with networks such as CORS and the Plate Boundary Observatory, and provides transformation tools compatible with software by Esri, QGIS, Autodesk, and Bentley Systems. It delivers modeled velocity fields informed by studies at Scripps Institution of Oceanography and USGS seismic deformation research, and offers metadata compliant with standards from ISO, the Federal Geographic Data Committee, and the Open Geospatial Consortium. Services include real-time kinematic corrections used by agencies like the California Department of Transportation and utilities such as Pacific Gas and Electric Company, and archived datasets supporting analysis by entities including the California Department of Forestry and Fire Protection and the California Department of Fish and Wildlife.

Data Standards and Technology

The Center implements standards promoted by the National Geodetic Survey, the Federal Geographic Data Committee, and the Open Geospatial Consortium, and adheres to protocols used by the International GNSS Service and the International Association of Geodesy. Technologies deployed include Global Positioning System augmentation, Real-Time Kinematic positioning, multi-GNSS solutions involving GLONASS, Galileo, and BeiDou, and geodetic leveling and gravimetry methods informed by Jet Propulsion Laboratory research. Software stacks used by partners include Esri ArcGIS, QGIS, PROJ, GDAL, and modeling tools from NCAR and the National Center for Atmospheric Research. Data formats follow NetCDF, GeoJSON, and ISO 19115 metadata profiles used by the National Spatial Data Infrastructure.

Projects and Applications

Major projects include statewide datum modernization supporting transportation projects undertaken by Caltrans, coastal subsidence monitoring tied to work by the California Coastal Commission and USGS, and freshwater management collaborations with the California Department of Water Resources and the Central Valley Flood Protection Board. The Center contributes to emergency response mapping used by the FEMA National Response Coordination Center, wildfire mapping for the California Department of Forestry and Fire Protection, and coastal resilience planning involving the National Oceanic and Atmospheric Administration and The Nature Conservancy. Research applications connect with climate science at the Scripps Institution of Oceanography, earthquake science at the Southern California Earthquake Center, and urban planning projects with the Metropolitan Transportation Commission and San Diego Association of Governments.

Funding and Governance

Funding streams include appropriations from the California State Legislature, grants from the National Science Foundation, cooperative agreements with the National Oceanic and Atmospheric Administration and the National Geodetic Survey, and contracts with agencies such as the California Department of Transportation and the California Energy Commission. Governance involves oversight by state agencies including the California Natural Resources Agency and advisory input from university partners like the University of California system, professional groups including the National Society of Professional Surveyors and American Society of Civil Engineers, and federal partners such as the United States Geological Survey.

Category:Geodesy Category:Geographic information systems Category:Government of California